Yes, this video shows how to diagnose even a simple problem. It is worth it, Peter.
@TRXLab5 жыл бұрын
Thanks John 73
@EUImperator5 жыл бұрын
I have this Receiver bought in 1992 and ever since standing on my Table but after Years of not using the VFO seems to be very sluggish and not smooth,. Also I never bought additional Filters therefore could you please tell me where to get repair if neccessary for this Recever and if there are still Spareparts, if needed, and where to get it from, may be ??? Thanks for the nice Video, however !!!
@vtradio5 жыл бұрын
My Kenwood R-2000 was not picking up any stations after being out in the cold garage all winter in Vermont. However, it did power up. Your video inspired me to take the covers off and inspect the radio. After consulting the trouble shooting guide, I found a blown 100 mA fuse that could cause this problem. I momentarily bypassed the fuse and got reception. It's an odd size fuse, and I don't have one here, but I will get one soon, and get this nice radio back up and running. 73 Paul AA1SU
@hectorpascal5 жыл бұрын
It's ALWAYS very risky to bypass any blown fuse. You don't want a transistor or even the mains transformer windings blowing instead of the fuse. If you must do it, use as close a value replacement as you have on hand.
@paul-c75415 жыл бұрын
Peter, Every video from you is a good video, everything needs to be seen all-round training is good , no matter how good you think you are. 73 Paul
@TRXLab5 жыл бұрын
Thank you Paul! Have a nice Sunday 73
@Michael-qr7hn Жыл бұрын
Thank you I like your approach to solving a problem. It takes me back to when repairs where done in the correct way.
@montygore3 жыл бұрын
No mater how long you have been repairing radios and amplifiers as myself you can always learn something. Thank you for the wonderful and in depth videos.
@TRXLab3 жыл бұрын
Thank you for the feed back!
@justinspeer84815 жыл бұрын
As someone who discovered my interest in repairing radios from channels such as your channel, MrCarlson, Mike’s Radio Repair, etc., I definitely think it is worth it. Having someone to guide you along the thought processes an experienced tech uses from the ground up is very valuable to me. I’ve come a long way thanks to this sort of content. Still have a long way to go. Thanks!
@TRXLab5 жыл бұрын
Ah very good glad that you like our channels! Have fun with the hobby 73
@hbmarcott5 жыл бұрын
When you were looking at the spec page it showed 35 watts AC and 2 Amp DC but you seemed to not noticed it. so the 1,5 amp draw on your power supply was correct.
@markdraeger7689 Жыл бұрын
Well worth watching if you need to work on this radio. Good camera views of components, and a clear reading and diagnosis per the schematics. It will help me on my more difficult problem. Thank-you!
@16mmthrowback5 жыл бұрын
Peter, Excellent video! Simply replacing a blown fuse or closing a tripped circuit breaker, can cause damage. Your methodical, logical troubleshooting is a joy to watch. Good work verifying problem by showing DC side was still working.
@TRXLab5 жыл бұрын
Thank you
@hughmc54195 жыл бұрын
Trx, Nice video ,I liked that you used the 12vdc & brought it up slowly and watched the amps,ie:current. Also you broke out the prints to pinpoint problem, and eventually, retried ac [ via- new fuse{__ 120v @ f2 }, feed in signal & tuned it for the harmonic resonance...¥.....Great video..Hugh...Chicago, metro..Oak Park,IL.
@TRXLab5 жыл бұрын
Thanks for feed back Hugh 73
@donschneider72522 жыл бұрын
Yes thank you for showing the simple stuff for us simple folk! We need to start somewhere...
@mbak78013 жыл бұрын
I have one of these fully optioned out and working (apart from the 2m module). I had it on my lap at a friends house (UK) and I put my finger on the so239 at the back. An Australian amateur radio station came hammering in (ok a high power one). This is a very nice receiver and super sensitive. Well worth putting on the channel just to get a look inside.
@kaleembaig3193 жыл бұрын
Dear Peter, Thank you for uploading this video. Trust me i learned a lot from this video. It was worth uploading, don't skip on the pretext that it was a simple fix and not worth uploading. Amateur technicians like me learn a lot.❤️❤️❤️, Stay blessed.
@RonV6823 жыл бұрын
I’m a beginner and this video was very informative and I’d like to say thanks. It’s showing the beginnings of how to diagnose or troubleshoot a radio . I’m sure many others of little or no experience appreciate too ! Thanks, Ron V in Henderson Nevada.
@TRXLab3 жыл бұрын
Thanks for your feed back
@danishnative95555 жыл бұрын
Not sure why you are concerned. You do a great job of dogging out the problem either big or small. That is the satisfaction part. Personally, I like more complex repair, and really good test gear. Gave you thumbs up. Thanks.
@TRXLab5 жыл бұрын
Thank you 73
@PapasDino5 жыл бұрын
I think it's worthwhile to share even the easy fixes Peter, thanks! 73 - Dino KL0S
@TRXLab5 жыл бұрын
Good to see you Dino and thanks for feed back 73
@johnrobinson3575 жыл бұрын
All information about problem solving a power/function issue, no matter how simple has value. Your approach was logical and easy to follow for those whom may lack such ability's. Not all repair videos must at logic level, or follow a long chain of components all over the board. It is a confidence builder. But in truth, a open fuse has almost always been the start of a cause and effect analysis. Almost never is it as simple as just a bad fuse. So yes, good video. Thank You for posting it. Someone may benefit from it.
@TRXLab5 жыл бұрын
Thanks for feed back John
@curtw88275 жыл бұрын
All your videos are informative. The fuse looks to be mechanically defective as it does not look blown. Some hams are appliance operators and would never remove a cover.73
@TRXLab5 жыл бұрын
Thanks Curt 73
@Blasserman5 жыл бұрын
Glad you posted this one because we need see the easy fixes along with the most difficult ones. I'm amazed that a receiver like this will draw 1.5 amps.
@malcolmlewis32395 жыл бұрын
Current draw is because it is old technology with a power hungry CPU. The specs do say DC 2A next to the AC of 35W.
@Radiocruncher5 жыл бұрын
Well worth showing Peter. Very interesting as always. Strange that the 2m module was disconnected. I suppose a surge could have taken the fuse out. Regards Graham
@TRXLab5 жыл бұрын
Thanks Graham! Yes it is strange with the 2 m and still no answer why it was disconnected..73
@SkyWire885 жыл бұрын
I believe it is important to show all types of problems, whether it is simple or complex, because, after all, that's what we will find in real life. Nice job. Thumbs up. I enjoyed it.
@TRXLab5 жыл бұрын
Thanks for your feed back 73
@earlrichardet21025 жыл бұрын
Forgot to mention that all your videos are worth watching. I find your troubleshooting thoughts very informative. Almost makes me think that I could fix it myself hi hi. Cheers
@TRXLab5 жыл бұрын
Thank you 73
@marklange88945 жыл бұрын
Very good video to demonstrate for new people to the hobby (and even some more experienced people) the correct approach this type of problem. Don't just jump in with both feet, as we say here in Texas. Always start at the power source and work your way through the circuit. It could have very well have been a bad bridge rectifier, so your troubleshooting steps of bypassing the power supply quickly ruled out everything past that point and isolated any potential problem to the power supply. The only thing that you did not mention was NEVER put a replacement fuse rated for more current than specified by the manufacturer. Over my many years of radio repair I can't count the number of times that I have found 15, 20, or even 30 amp fuses in place of a 5 amp fuse. Usually, such replacements resulted in a burned trace somewhere else in the radio. Wonderful troubleshooting procedure video. My guess would be an old fuse that over the years gave way to age and gravity of that thin wire suspended between the end caps of the glass fuse. I have seen that many times, but as you said, usually in high mechanical stress environments like mobile installations.
@TRXLab5 жыл бұрын
very true Mark! Thanks for feed back 73
@alancordwell97595 жыл бұрын
Definitely worth seeing, Peter. The diagnostic process is the key. Like you I've seen a few fuses fail for no apparent reason. It just happens... :-) best 73 Alan
@TRXLab5 жыл бұрын
Yes that is true Alan! Thanks for feed back 73
@jenniferlachance3515 жыл бұрын
Excellent video! Simple to repair, yes, but definitely worth watching. Thank you for taking the time to put this and all your videos together! They are fun to watch and learn from! All the best from north Texas!
@TRXLab5 жыл бұрын
Thanks for feed back Jennifer! 73
@Homer195215 жыл бұрын
No matter how simple, you always do a great job. I expected you to put an ammeter across the empty fuse holder & slowly bring the rig up to operating input voltage.
@TRXLab5 жыл бұрын
Thanks Bob. The Amp meter and Watt meter is always in line by my power analyser... 73
@Homer195215 жыл бұрын
Ahh! Of course.
@ThomasHart595 жыл бұрын
I still have my original Kenwood TS-440 sitting on the shelf. One day I'll fire it up again. Hopefully it'll still work as it did when I last used it.
@TRXLab5 жыл бұрын
Hope your TS-440 will still work...73
@HitchHiker4Freedom5 жыл бұрын
They are all worth it. Thanks for taking the time.
@TRXLab5 жыл бұрын
Thank you! 73
@michaelcarey5 жыл бұрын
Excellent video Peter. The methodical approach to repair is the way to go, even a simple or obvious fault needs proper diagnosis.
@TRXLab5 жыл бұрын
Thanks Michael 73
@mikefinn2101 Жыл бұрын
yes great video still very useful and i am happy to be back in the lab with you. very thankful never worked on this radio. The steps are very important and even an experienced Ham needs to start with the basics as you did and not jump to conclusions. In fact many skip this part so glad you took the time to do it right. Always very happy to watch one of my favorite channels and look forward to each one. always a great pleasure and enjoyment for me, forever thankful best 73s wb7qxu
@TheRadioShop5 жыл бұрын
"""We WILL win the game""" Thats the spirit my friend! Remember, eve a simple video can help someone out. Thanks for sharing Peter. I enjoyed it.
@ojjenkins71105 жыл бұрын
Hi Buddy. The n didn't get on even for some reason. I noticed F1 was not blown in the middle so maybe the owner looked and thought the fuse was good??
@TRXLab5 жыл бұрын
Yeah you are right Buddy Thanks for feed back my friend 73
@burnts1enna4 жыл бұрын
I operate a Kenwood R-5000 receiver. The pots are noisy and should be cleaned. Have you posted a video showing how to clean pots up? Liked your video. Thanks for posting!
@timsherry495 жыл бұрын
Very common problem with the volume control. My 5000 does the same thing. Needs a good cleaning.
@digbootyman5 жыл бұрын
Have got the same Rig with the same problem with the volume control any idea as to how to clean it ?
@TRXLab5 жыл бұрын
basically dioxide spray will do the job for you
@tongordebeke13555 жыл бұрын
Peter, Ich danke für deine ausführliche Erklärung. schaue mir gerne deine Videos an. Und lerne immer wieder. Gruß, Ton
@TRXLab5 жыл бұрын
Vielen Dank Ton! 73
@kjellsvendsen67394 жыл бұрын
Some silly people like to totally overlook your knowledge and just focus on your language. I really do admire the fact that you still go on making more videos, despite of this fact, to teach and share your wisdom and skill. So, TY VM OM fer Who U R and what U DO de LA1HHA es 73 OM!
@bobclarie5 жыл бұрын
Very Helpful Peter . . going through the diagnostic process. Thanks ! '73 Bob
@TRXLab5 жыл бұрын
Thanks Bob 73
@josephlicata43045 жыл бұрын
Very thorough troubleshooting! Thank you
@Kult0135 жыл бұрын
Yes, please do upload videos like this. It does show how to diagnose and start the rapair of a faulty device. Beginners do have to start from somewhere.
@TRXLab5 жыл бұрын
okay thanks for feed back Kuldar 73
@LeeKirkman883 жыл бұрын
Fuses can naturally degrade over years of operation just like light builb Filament can degrade through heat and use over time it becomes brittle. It could have also been a small amount of moisture in the enviroment thats not unheard of. Happens alot when people put things away in the loft or shed for years and they oneday decide to power it on. Without properly drying it out. Also Electrolytics can become corroded. As i found out when i bought a Concorde 2 that had sat in a attic for 20 years. Every single one had green legs and i recapped the whole thing. Also gave it a good going over with servicol including the relays. And that cleared up the Audio crackle and intermitence.
@roygabriel.27535 жыл бұрын
We all have to start somewhere. So it was good to verify my thoughts as you progressed. Thank you.
@Steven_VE9SY5 жыл бұрын
For some one new it shows them the way to start trouble shooting. I think it was an excellent video. The owner may have just hooked u the DC in the wrong polarity. Shows that some fixes are simple. Enjoy watching you videos. I've actually been in the middle of a project and one of your videos will pop up and something you do will kick me in the but and remind me of a basic step I missed.
@TRXLab5 жыл бұрын
Thanks Steven 73
@michelfries14295 жыл бұрын
A R5000 always needs to be repaired! Too good radio!
@KC-vp7wn4 жыл бұрын
Yes thank you for the video. I also have an R5000 unit but it needs the main capacitor off the bridge, you clearly hear AC hum. Still a very nice radio for it's time.
@OleF1125 жыл бұрын
Another nice, short video about everydays problems in the radio world. Radio is not working? so check the first things first! That is something everybody can do, just do it! Thank you Peter and 73! It´s hard to let it come out from my mouth: "Helau!" (instead of Alaaf!);-)
@TRXLab5 жыл бұрын
LOL I don't even know the difference between Helau and Alaaf haha. Thanks for feed back Olaf
@tpcdude5 жыл бұрын
I started my serious SWL hobby with this rig. It has the most frustrating frequency entry keyboard, the digits in a stupid counter-intuitive order that drives you crazy
@TRXLab5 жыл бұрын
Modern radios are often not better in this regard lol Thanks for watching
@CT1ELP5 жыл бұрын
It was worth it ! It is always worth it even if it is just to see the radio´s inside. Keep up the good work. 73
@TRXLab5 жыл бұрын
Thank you
@willhelmx83885 жыл бұрын
For a big spirit no problem is to small :-) things like this comes along now and then, still a nice video Peter 73´s
@TRXLab5 жыл бұрын
lol yeah..Thanks Willhelm 73
@TheLightningStalker5 жыл бұрын
Hi I have a Kenwood TR-7625 with a squelch that is stuck open. The potentiometer is fine and the capacitors test good but it doesn't close up. Sometimes if it sits running for a long time it will start to work. I'm thinking maybe the transistor or one of the resistors but it has bothered me since I got it 4 years ago. Thanks for sharing your knowledge.
@samw21955 жыл бұрын
Great Video as usual be good to see a TS440 with the display full of dots if you get one in anytime 👍
@TRXLab5 жыл бұрын
yeah I had some with that fault but I think not having done a video on that. Okay next time..73
@MrKelendros5 жыл бұрын
Nice video Peter, Thx for sharing your time. No problem with a fuse fault only. You always teach something interesting!
@TRXLab5 жыл бұрын
Thanks Carlos 73
@StreuB15 жыл бұрын
Peter, these types of videos are VERY much worth it and very much needed on KZfaq. Your thought process while going through it and why you are doing what you are doing are VERY helpful, even for people who are a bit more seasoned with electronics in general. I am certain most viewers would also agree with this. I feel you do not see the true value in even your more simple videos. You are a good teacher and a good presenter so please, keep it up. One of the real takeaways in this video for people to see and understand; the fuse blew for a reason. It could have been age, a bit of corrosion got in and weakened the element causing a slight surge to blow it. It could have been more though and thats what people need to see. They need to understand that chucking a new fuse in and powering it up isn't always the right solution. A bit of time with a meter, your eyes and the old nose looking for traces of the golden screwdriver and the magical smoke is required. Thank you and all the best. 73deN0BPS
@TRXLab5 жыл бұрын
Fully agree Brian! Thanks for feed back 73
@michaelcornet5065 жыл бұрын
I would say just keep the vids coming even from this level, there are always people on this level that need to learn from it.👍
@bblod48965 жыл бұрын
Yes, the video was important because you started at the very beginning of the diagnostic stream. Methodically checking items before possibly burning more fuses. Thanks.
@TRXLab5 жыл бұрын
okay got it..Thanks for feed back 73
@donstewart2485 жыл бұрын
No such thing as a dum question. It is all a learning experience.
@TRXLab5 жыл бұрын
Thank you 73
@624radicalham5 жыл бұрын
If you're interested my friend, let me tell you what would also be helpful. After your excellent repairs it would be very important to see the radios in operation with a live antenna connected. Play with the controls, the IF Shift, the RF gain , etc. while listening to live SSB and AM signals. It does not matter how long the video will be. This will be helpful to all viewers so that we can see the live characteristics, how it deals with weak signals, how the buttons sound when turned, etc. to help us make a decision when buying a similar radio. You have a unique opportunity to do this with all of the radios that pass through your hands. Please consider this.
@JamesGMunn5 жыл бұрын
Sometimes it is fun just to see inside the radio and see the schematic. It looks like reasonably high quality and seems to still work well. From the single sided brown PCBs, I would have guessed that the design is from the early 80s but it is actually from the late 80s.
@TRXLab5 жыл бұрын
Thanks for feed back James 73
@twoheart78133 жыл бұрын
I worked on an R-2000 that was blowing fuses and traced it to a shorted electrolytic on the main board. After replacing that it powered on fine but with AC hum so replaced the ps cap and it played fine.
@TRXLab3 жыл бұрын
sounds good thumb up!
@hectorpascal5 жыл бұрын
Hmmmmm. I REALLY hate faults like that! I need to know WHY it failed!!! I would always leave such a repair switched on for 48 hours - just to see if the fuse would pop again.
@emylrmm2 жыл бұрын
Fuses have an I2t rating and inrush needs to be considered. There are there for safety only, they generally do not protect circuitry from damage. I would put in a standard curve fuse, not a fast-acting type in that circuit.
@mvssarma33876 ай бұрын
lovely video, video Peter. with this motivation I tyry to service same model tomorrow. Thyanks
@TRXLab6 ай бұрын
Good luck with your project!
@rangersmith46523 жыл бұрын
Seems that AC side fuse did its job very well, probably due to a power spike from lightning, or some such thing. Yes, well worth posting the video simply based on the methodical approach you took to solving the issue.
@burnts1enna3 жыл бұрын
Good video, thanks for uploading. But i wish you would have shown now to clean the pots!!
@TRXLab3 жыл бұрын
Do you mean with chemistry?
@neil67655 жыл бұрын
This video was worth it and I love the radio
@TRXLab5 жыл бұрын
Thanks Neil 73
@scottdaviesvk2sdx3192 жыл бұрын
For the first few minutes I was literally yelling at the screen - "What is that connector near the black heatsink doing? It's not connected!"
@ve3krp5 жыл бұрын
Yes this video is worth it... Many good techs have been caught by "simple" problems... Keep up the good work Peter !
@TRXLab5 жыл бұрын
Thank you 73
@NMrick5055 жыл бұрын
I have one in storage. I may need to bring it out and hook it up.
@TRXLab5 жыл бұрын
Very good idea Rick :-) Thanks for watching 73
@rubusroo685 жыл бұрын
lovely looking set
@TRXLab5 жыл бұрын
not to bad for its age..
@pc4ad5 жыл бұрын
Yup, for sure a good video to upload. Check everything before just changing the fuse and reconnecting. Damage might be done otherwise. 73 de PC4AD
@StreuB15 жыл бұрын
I agree 100% which is one of the real takeaways in this video for people to see and understand. The fuse blew for a reason. It could have been age, a bit of corrosion got in and weakened the element causing a slight surge to blow it. It could have been more though and thats what people need to see. They need to understand that chucking a new fuse in and powering it up isn't always the right solution. A bit of time with a meter, your eyes and the old nose looking for traces of the golden screwdriver and the magical smoke is required.
@TRXLab5 жыл бұрын
Thanks for feed back 73
@SuperMeganw5 жыл бұрын
Very good Video From GARY in the UK .
@TRXLab5 жыл бұрын
Thank you Gary 73
@tuberadiohistory80934 жыл бұрын
Great video. I own after years my "new" Kenwood R 5000 again.
@MrVasile5 жыл бұрын
Definitely a worthwhile video! I would appreciate seeing you clean the pot, as every radio layout is a bit different and we could benefit from seeing it done properly. On a different note, I believe that the total value of your videos would benefit tremendously from a better, smoother, less noise-crashy method of moving the camera around. I could watch your videos for hours, but (maybe it is just me) I cringe when you have to drag that camera tripod around. Buddy from The Radio Shop has a camera mount that is very smooth when repainting, and he starts/stops the camera when he has to drag it around. I know this is more work for you, and maybe that just isn't something you have the extra time to spend on...if so, that's cool. Overall, grateful for what you share! Thanks and 73, Tony KB9A
@TRXLab5 жыл бұрын
Thanks Tony and got your point. Should switch off...73
@claudio64935 жыл бұрын
Thanks Peter! I have appreciated a lot your video even for a simply repair I always learn a lot from you! Danke!
@TRXLab5 жыл бұрын
Thanks Luca 73
@paulkendall345 жыл бұрын
Yes even the simple fix was worth the watch because I was interested to see why it was not powering on for and yes simple fix but at least we see it and know.
@iw0hex5 жыл бұрын
Very simple repair dear Peter :) Thanks for sharing. Regards, Pasquale IW0HEX
@TRXLab5 жыл бұрын
Thanks Pasquale 73
@injoelsgarage39345 жыл бұрын
Peter, excellent video as usual! All of your videos are worth the watch. We always enjoy the videos Peter so don't stop them, or think about whether it's worth it or not. Thank you so much, Joel
@TRXLab5 жыл бұрын
Thanks for feed back Joel 73
@alastairchestnutt64165 жыл бұрын
Certainly worthwhile. Thanks
@TRXLab5 жыл бұрын
Thank you 73
@stargazer76445 жыл бұрын
The spec sheet said the radio uses 2A on DC. And yes, this video was worth uploading. Sometimes the solutions are easy, but it is still good to see the troubleshooting steps.
@TRXLab5 жыл бұрын
Thank you 73
@bobkozlarekwa2sqq595 жыл бұрын
Simple, but a good example of what can happen. I’ve had 2 cases of mechanical failure of a fuse. I suspect it can be related to the heating (expansion and contraction) that might occur with the temporary current surge, repeated every time the unit is powered on.
@TRXLab5 жыл бұрын
Thanks Bob 73
@emylrmm2 жыл бұрын
Notice that the specifications for list DC input current of 2 amperes and you measured very close to that value at nominal DC voltage.
@Barracuda480825 жыл бұрын
I rather work on the older transformer linear supplies than the switching type, less noise and patch . Well worth the view.
@TRXLab5 жыл бұрын
Thank you Gary 73
@etheroar63125 жыл бұрын
at about 15:00 on DC and again about 19:00 on AC the display is cycling brighter and dimmer. Not sure if this has any bearing on the problem, but might indicate a failing component.
@TRXLab5 жыл бұрын
Yeah must be a camera effect..Thanks 73
@berndb.50975 жыл бұрын
Hi Peter, My week was exciting enough, so the video with "just" a fuse change was very relaxing. But what did we learn? Changeing a fuse, and do not worry why, is certainly not the right approach. I just like to look into such old equipment. Interesting for me...... Is the small board with the two quartz(filters) and the red transformers the AM filter? Thank you for the video. 73 Bernd
@TRXLab5 жыл бұрын
okay very good Bernd..Thanks for feed back 73
@tuxontour3 жыл бұрын
Hmm seems like AC and DC power at the same time ... maybe DC voltage spike so the battery worked against the transformer ... btw the anti backfeed diode in the 12V part works also against wrong polarization of the imput jack.
@danedewaard82155 жыл бұрын
Nice video! A real nail biter for a while there! It's nice to have a outcome that can be achieved by viewers with a minimum skill level once in a while!!!
@zeproo5 жыл бұрын
i learn i learn !!!
@TRXLab5 жыл бұрын
Thank you 73
@PileOfEmptyTapes5 жыл бұрын
The high standby power consumption is likely to be normal for this model - it only turns off the receiver section and puts the microprocessor in reset, but other digital circuitry and the display (VFD - heater!) remain powered on. That's the 1980s for ya.
@TRXLab5 жыл бұрын
Yeah that is true.. Thanks for freed back 73
@2904carlosleon4 жыл бұрын
HOLA , GRAN TRABAJO . tengo este mismo receptor y me encanta, pero hace unos dias al pulsar cualquier tecla de funcion emite al hacerlo un beep tone por el altavoz un poco fuerte que resulta desagradle .. no veo que opcion he cambiado .. hay alguna forma de reconfigurarlo para que no pite al cambia o pulsar el teclado ?? gracias
@IMSAIGuy5 жыл бұрын
Any video is good. The positives were: got to see inside an R5000, always check basic like fuses. interesting to see two fuses in the circuit. good idea to try DC power. might add checking the supply voltages and the look of the capacitors to see if the problem will repeat.
@TRXLab5 жыл бұрын
Totally right...Thanks for comment 73
@tomdiamantes5 жыл бұрын
Very worthwhile instructional video! Good job!
@TRXLab5 жыл бұрын
Thanks Tom 73
@jamesdoyle68395 жыл бұрын
I'd also check the Bridge for leakage.. put a bulb in meter also.
@TRXLab5 жыл бұрын
The bridge is fine...You mean the S meter right?
@tlrptg5 жыл бұрын
did you check D1 ? if it's shorted, any future short circuit on the 13,8V DC IN pins can blow F1 fuse again.
@TRXLab5 жыл бұрын
The rectifier and the D1 is fine....73
@williel.morris44925 жыл бұрын
Yes, Yes, I always enjoy your Videos keep them coming...
@TRXLab5 жыл бұрын
Thanks Willie 73
@richardcook46435 жыл бұрын
Thanks for the video, just the thought process is worth watching. I enjoyed it.
@TRXLab5 жыл бұрын
Thanks Richard 73
@chronobot20015 ай бұрын
I think the big cap in the power supply is degraded. I don't think that dark ring around the cap is supposed to be there. I think it is dried leakage.
@ThomasHart595 жыл бұрын
Good video. Sometimes the problems are simple. Nothing wrong with showing that.
@TRXLab5 жыл бұрын
Thanks Thomas 73
@trueblue2k25 жыл бұрын
A no power fault is usually isolated to power supply failure or overload, relatively easy to isolate and repair. After viewing the bench full of expensive equipment behind you, it's obvious you are an experienced technician that can fix it during this 30 minute video.
@captlarry-35254 жыл бұрын
We used a color tv set for 10 years, that I pulled off the trash pile, after I replaced a solder-in fuse ! The schematic shows a 3rd fuse in the primary of the transformer.. does it exist...or is it really F1? I would have been inclined to isolate the output from the FW bridge, from the radio and test with the new F1 first... just in case. This is highly worthwhile, because you ALWAYS have to confirm that tha power supply is working correctly, before you can procede. You will have egg on your face if you forget this.
@80Loke5 жыл бұрын
Advanced or simple fix any video is always nice, i would like to se some video about antenna basics and maybe how to make a own antenna for 70cm. :) 73s
@TRXLab5 жыл бұрын
Thank you. 73
@jamessawyer46255 жыл бұрын
yes your video's are always interesting and helpful. Keep them coming
@TRXLab5 жыл бұрын
Thanks James 73
@hamandwine5 жыл бұрын
I can understand your sorrows... Just changing the fuse and it works again... but doing the math 13V at 1.5A is around 20W and the manual says that it are maximum 35W over AC and 2A at DC. So all is fine within spec. An often forgotten thing is the power-on inrush-current. It causes a heat stress on the fuse, that again causes a mechanical stress on the fuse-filament. And after some years... However, you showed a perfect way to start such a unit by a current limited DC power supply, just in case it is not only the age of the fuse. Thanks!