I guess I'm extremely bored so I watch old videos. You are one superb technician. I really enjoy your videos. I think I learn something every time I watch. Thank you for the videos. I'm just an old retired technician. W Rusty Lane K9POW in eastern Tennessee
@pixeluser82433 жыл бұрын
Please never change the way you make your videos. I love the clicking of pushing the button between each shot. You always stay calm and explain very slow and clear. This is really educational for people who are not an expert in electronics.
@45AMT3 жыл бұрын
This is why I like watching TRX Peter doesn't give up easy. Good job Bravo!!
@TRXLab3 жыл бұрын
Thank you
@hectorpascal3 жыл бұрын
NOT a repair I would have attempted! So you have once again earned my great respect, Peter!
@TRXLab3 жыл бұрын
Thank you!
@fernandoscrenci95553 жыл бұрын
@@TRXLab You have the technical skills to fix, such a problem like this!!👍
@mikefinn2101 Жыл бұрын
Another excellent video by peter a great learning experience and very enjoyable to watch. Great teacher Enjoy his videos. thanks Mike
@highpwr3 жыл бұрын
It's not very often you get to see someone who can put the magic smoke back _into_ a piece of equipment! Impressive repair Peter. 🎯
@TRXLab3 жыл бұрын
lol thank you!
@GeneralPurposeVehicl2 жыл бұрын
Its even rarer to see that someone mistake inductors for caps (the green parts were marked with an L in some places) on a board that had the rare PCB failure (the only way I could think that pattern of cremation could occur.)
@robertmartens58773 жыл бұрын
Amazing Job Sir. Most would have just told the customer it needed a new board and if they could not afford it. Told to sell it as a parts radio. Amazing skill sir. Well done. 👍 73.
@TRXLab3 жыл бұрын
Thank you
@dennisjoiner37172 жыл бұрын
I'm no good at electronics, but I sure enjoy your expetise and ability to fix something instead of just replacing parts (ie circuit board). Thank You.
@nr3rful3 жыл бұрын
You fixed the radio....for crying out loud why would anyone thumbs down that ? What more could they do ? Excellent as always..
@TRXLab3 жыл бұрын
Thank you! Well there are always trolls which we simply ignore...
@billnicholson24703 жыл бұрын
Better than a new board. That was a really nice repair. Very complicated but the finished result was perfect. Always learn something new from you. Danke Peter.
@TRXLab3 жыл бұрын
Thanls
@charliem.99983 жыл бұрын
Again a great repair job by Peter ... He can be entrusted with repairing any radio ... hats off gentlemen ... 73s de DL6RDE/AA1KD, Karl-Heinz "Charlie"
@TRXLab3 жыл бұрын
Thank you Charlie!
@TheMaddogronh3 жыл бұрын
I love waking up to a video like yours and having my morning coffee,, Thanks for another fine video !!
@TRXLab3 жыл бұрын
glad to hear that! Thank you
@chickennugget33623 жыл бұрын
Great video as always! 73's Beautiful job with the new transistor. That's a work of art!
@TRXLab3 жыл бұрын
Thank you
@yorkshirebikerbitsnbobs2 жыл бұрын
These type of videos are truly inspirational. Thank you TRX Lab.
@pixeluser1753 жыл бұрын
I watched a lot of TRX Bench the last years. These videos really are electronic detective movies with always a good outcome. Told by a calm person. I really can sleep well to this videos and also learn something. Compliments
@TRXLab3 жыл бұрын
glad to hear that thank you
@NikiBretschneider3 жыл бұрын
Hi Peter, good job. I have a little addition to setting the idle current process. It's in my opinion much better to do this in DIG (not PKT) mode than in SSB. DIG is the same thing as a SSB (LSB or USB, can be set somewhere in the menu), but the radio expects modulation from the 6-pin miniDIN socket on the back (which is in fact low impedance line input) EVEN if you press the PTT on the microphone. So if push the PTT on the microphone in the DIG mode and you have nothing connected to the 6-pin miniDIN socket, you are in fact transmitting in SSB mode with completely muted microphone, which makes setting the idle currents much easier and precise.
@TRXLab3 жыл бұрын
Thanks Niki. Yes good point with DIG
@DL5LC2 жыл бұрын
Hi, thank you for this very interesting post. I imagined changing an MCU to be much more difficult. I find your approach to error analysis (also in the other videos) super and very instructive! Many thanks for this. vy 73 Andreas, DL5LC
@fernandoscrenci95553 жыл бұрын
Very neat and clean trouble shooting!!!👍📷
@TRXLab3 жыл бұрын
Thank you
@russozard26263 жыл бұрын
great job peter as always
@MsMaidin3 жыл бұрын
very2 clear dealing in the repair good upon the good in learning ,many thank from 9M2DU
@TRXLab3 жыл бұрын
thank you
@v12alpine3 жыл бұрын
Glad you went ahead and fixed it. That radio is no longer in production and factory repair isn't really an option. 857D is my favorite "swiss army knife" radios of all time. Especially with a wide band collins filter.
@DucatiMTS12003 жыл бұрын
A great repair and carried out very professionally. The test equipment is very interesting also. Super video. Thanks for letting us all look in. 73 de GI8WFA and stay safe.
@TRXLab3 жыл бұрын
Thank you
@sergei598893 жыл бұрын
Has same problem 2 times.I soldered copper wires to restore the transition between the sides of the board. Like and good luck!
@charlesgoede28093 ай бұрын
Mine 2x as well! BUT, mine still has what I believe is driver/milliwatt output and TX/RX sounds fine. Do you by any chance do repairs? 73
@Joe_KS1I3 жыл бұрын
Great job Peter. I'm always learning when I watch your videos.
@TRXLab3 жыл бұрын
glad that you liked it
@RGB060843 жыл бұрын
Great work Peter. Thank you for what you do here!
@TRXLab3 жыл бұрын
Thank you
@jannejohansson33833 жыл бұрын
He give hope to others repair.. D'OH! Smokeyy...
@MrKelendros3 жыл бұрын
Nice a very well explained repair as usually peter. Its always a pleasure to have a sunday with one of your funny videos. Thx for your time, always learning something. Many comments and few likes, come on boys!!
@TRXLab3 жыл бұрын
Thank you!
@iw0hex3 жыл бұрын
Great job as usually dear Peter. I had the same problem with Icom 775's the PA final stage ; I rebuild with new PCB burned zone. As in your case, there was a loss between 13.8 volt and GND traces with a huge current between. I think this can happen with the PCB heat or humidity, I don't know exactly. Best 73s and thanks for sharing. Pasquale IW0HEX
@TRXLab3 жыл бұрын
Thanks Paquale. Yes sometimes it is tricky and you never know for 100% what it really caused... Take care my frind
@gbpauluk3 жыл бұрын
Well done Peter a excellent repair as usual and a great up beat video in plain English 👍 keep the videos coming mate.
@hancecrawford2 жыл бұрын
Peter super repair Good Job you saved the customer alot of money as Yaesu wouldn't do that repair they would only sell you new board which would cost $700.00 or more maybe suscessful repair well done :)
@TRXLab2 жыл бұрын
yeah that is true very pricey to get the board replaced..Thank you
@cookiebeariscool3 жыл бұрын
beautiful repair....... you do the repairs the factory would not do , that is why I love your videos . You truly are a master technician . That is a repair I would also attempt myself , though probably not as nice looking as yours hahaha. Many thanks.
@TRXLab3 жыл бұрын
Thank you!
@robertrainey1728 Жыл бұрын
Great repair Peter.
@stevegriffin95523 жыл бұрын
Hi Peter it’s good to see your videos again I really definitely enjoy them. And you did a fantastic job on that 857, actually your repair job looks better than the factory I’m very muchly impressed. And how you are able to work with the SMD is phenomenal. Hello from the Texas hill country. 73 WD5ENH Steve
@TRXLab3 жыл бұрын
Thanks for the kind feed back very much appreciated! Best wishes over to Texas. 73
@g0fvt3 жыл бұрын
Well done Peter, a great recovery from a big mess.
@TRXLab3 жыл бұрын
Thank you
@radioholicy3 жыл бұрын
that is repair... not simply changing parts- that is ecology. GREAT JOB DONE!
@TRXLab3 жыл бұрын
Totally agreed! Thank you
@ohyeawhosurpoppy3 жыл бұрын
You always do such a great job tracing the event that caused the problem. You never assume a fix.
@TRXLab3 жыл бұрын
Thank you
@fernandoscrenci48742 жыл бұрын
Amazing Fix !!! Peter you have done it!!!!💎 👈🏻
@TRXLab2 жыл бұрын
Thank you
@roymercer69673 жыл бұрын
Thank you sir for another fantastic video and repair.
@TRXLab3 жыл бұрын
Thanks for watching
@Joe_HamRadioGuy3 жыл бұрын
Another nice repair. I'm sure those new via's are better then original. That is a great little radio. Ten thumbs up!
@TRXLab3 жыл бұрын
Thank you
@Subgunman3 жыл бұрын
Very nice video! Glad to see that you did not give up on that board! I worked in commercial comm back in the states for 20 years and was a dealer for Uniden commercial radios back in the day. They were fairly reliable however those little green caps on the final were always junk. As a habit we always replaced all caps around drivers and finals but to comply with warranty work we always sourced from Uniden. Is there an EU supplier for these caps? I have a first gen 857 ( not a D model) and it is probably equipped with same trouble makers. It might be worth my time to replace them as a preventative measure. I don't know if that final for the original 857 is available still, if not a ounce of prevention is better than junking the whole unit if that PA fails. A word of wisdom from past experience. Try to clean off as much of that carbon from the board and reseal the area with a high voltage corona dope. That carbon is conductive and can cause some issues. Take care and keep those videos coming!
@TRXLab3 жыл бұрын
Thanks for feed back!
@wolfhawg3 жыл бұрын
Hi Peter. Tnx for another great video. Interesting as always.
@TRXLab3 жыл бұрын
Thanks
@skater41693 жыл бұрын
Another interesting repair Peter thanks for the video keep them coming.
@TRXLab3 жыл бұрын
Thank you
@F5SSL3 жыл бұрын
As usual an excellent video! I think the repair will be reliable, the PCB feed-through wires are as good as the original setup. Best 73's SEB
@TRXLab3 жыл бұрын
Yes fully agreed
@rscelectrical70913 жыл бұрын
Another excellent repair Peter, yet another radio saved from an early grave 👍😀.
@michaelclutton84463 жыл бұрын
Another great video, you mentioned free band, I didn’t know you had a VHF allocation for that in Germany de Mike
@TRXLab3 жыл бұрын
Yes we have 6 channels witch are free to use without a license limited to 1W HF power. Those channels are very often used by many CB radio operators
@BobMellor19543 жыл бұрын
Great video and excellent repair, many thanks
@OleF1123 жыл бұрын
Once again a nice radio has been safed, good work indeed! I guess the cap shorted out, an the owner could be happy that the short stopped while burning. There was enough material left to give it a try, and you succeeded. Peter, may you plan to collect the charcoal from all the burned radios? You can get a nice diamond if you press it hard enough ;-) Just kidding. Nice video, good work. 73 de Olaf, möge der Sommer endlich kommen!
@TRXLab3 жыл бұрын
Thanks Olaf, yes I'm doing this job only to collect enough charcoal to start a diamond production one day lol. Ja nach all dem Regen und Unglück hoffen wir das der Sommer beginnt. Hoffe Du bist verschont geblieben von den Fluten...73
@glenmartin24373 жыл бұрын
Thank you, Peter. A great repair. NOQFT
@TRXLab3 жыл бұрын
Thanks
@notfallmed3 жыл бұрын
Hey Peter wie immer klasse ;-) wollte einfach mal wieder Tach sagen, biba 73 schönes Wochenend.
@TRXLab3 жыл бұрын
Ah schön von dir zu hören! Vielen Dank und ebenfalls schönes Restwochenende! 73
@darrylhaynes92083 жыл бұрын
That's a great option. Smoke signals built in.
@TRXLab3 жыл бұрын
LOL a special feature
@HyyskanPolttaja3 жыл бұрын
Great job once again Peter. It seems you don't need an audio generator at all as you can whistle nearly perfect sine tone ;)
@TRXLab3 жыл бұрын
lol okay I have a function generator to sell lol
@bblod48963 жыл бұрын
Nice repair Peter. Thanks for the video.
@TRXLab3 жыл бұрын
Thanks for watchig
@transmaster3 жыл бұрын
I like seeing the innards on these radios. 👍
@CarNRadio12 жыл бұрын
Remove the screws before unsoldering transistor would help with the heat transfer to the heatsink while removing it. It will save the traces on the board.
@geraldhaggard10183 жыл бұрын
You are right about the factory would not repair this kind of problem. I work on somewhat similar aviation equipment. I could not get away with this kind of repair due to the nature of use. My own stuff I will and have. I knew that something else caused this failure. this is good education for all of us.
@TRXLab3 жыл бұрын
Yes agreed and there is something which caused this failure and that was out of band transmission with maximum power...
@majordisappointment86923 жыл бұрын
Nice job the best repair for a bad situation thanks. Too bad the board could not be re-created with all the technology of today.
@arenaengineering80703 жыл бұрын
Such a part of the burnt printed circuit board must be cut out with a cutter or dremel and the conductors must be restored. Otherwise, high-frequency voltage will constantly break through here. Good video. Like.👍
@johnlesuer8471 Жыл бұрын
Looks like my problem. Now to try and find the p/n for the replacement fuse.
@alessandrozax3 жыл бұрын
Good Job and happy radio owner, better than a surgeon.. i know sometimes it's not easy find a replacement part such as special cap for UHF, maybe a NPO cap can be used. What do you think about "short killer" device for you lab ?! Regards'73 .
@TRXLab3 жыл бұрын
Yes you are right getting components is getting more and more critical. Even if you order by the manufacturer it happens that you get a back lock info of 8 month. So happened actually with a Icom IC 7100...
@SoddingaboutSi3 жыл бұрын
Very interesting repair Peter. Maybe a high SWR killed that output stage?
@TRXLab3 жыл бұрын
Hi Simon, good to see you! The internal SWR bridge does a quite good job to prevent a PA failing by high SWR but trying to match a bad antenna creates sometimes very hight voltages or simply the cap got a crack and starts burning under high voltage..you never now 100%..
@regularuser4923 жыл бұрын
Mein Gott, das ist wie meine FT857D aber nicht gebratten ! :))) Peter hat noch einmal seine technisches wunder gemacht.
@TRXLab3 жыл бұрын
lol oh ich muss dich enttäuschen ich kann keine Wunder... ;-)
@BoB4jjjjs3 жыл бұрын
Nicely done, good repair ;-))
@TRXLab3 жыл бұрын
Thank you
@janhenkins3 жыл бұрын
Thanks Peter, great video as always. I don't think my FT-817 has a Smoke Signal mode, at least not what I could find in the menus (which is probably just as well). I'll stick to CW as my lowest common denominator. 73, Jan Henkins - M7HNK
@TRXLab3 жыл бұрын
lol yeah let's hope that the feature not suddenly pop up
@John_Smith__3 жыл бұрын
Smoke signs ... Great! This is what makes electronics related videos go viral :) :) ... and I instantly had a lol when I saw the big inline fuse on the power cables :) ... there is nothing like safety:) Now one serious question, why not remove the screws Before applying solder ..it's less thermal mass hence faster soldering ... just saying ...
@kd5you13 жыл бұрын
I think the screws help align the transistor onto the pad. Otherwise the holes might not line up.
@TRXLab3 жыл бұрын
Yes what JohnD is saying is quite right you need the screws to align the transistor...
@John_Smith__3 жыл бұрын
@@TRXLab Of course, but I was referencing the part right at the begginning were you were removing the blown out power mosfet. a simple minor thing really not at all an issue specially because you have great top of the line tools for soldering and desoldering. But I prefer to remove the components with least possible thermal mass around then. BTW Great Video and you are totally right ... such board can perform for a long time and any brand would classify that board as not possible to repair ... Well it seems like the right to Repair movement is going Global and getting a lot of traction* ... * (and yes this last sentence is a pun intended for John Deer farming machines :) ).
@TRXLab3 жыл бұрын
@@John_Smith__ Ah okay I see, of course you are right John, but as long I don't feel the pain as the power of my soldering gear is powerful enough one don't think about that.
@ilangrosman3 жыл бұрын
Excellent repair video!!!
@TRXLab3 жыл бұрын
Thank you
@KD0CAC3 жыл бұрын
Maybe the 1st in yrs. that I would have gone one more step . Grind out the carbonized fiberglass , and then fill in fiberglass powder / epoxy . I am more of a mechanic , not as much of electronic technician as you ? Thanks again
@TRXLab3 жыл бұрын
Thanks for comment and yes that would be a good idea but since we have a multi layer PCB it is very risky to grind it out. With the new bridge wires installed we have it somewhat solid and from my perspective it is the maximum we can do...
@ronjenkins66743 жыл бұрын
@@TRXLab I would have still filled the crater with epoxy just for the insulation from the burnt fiberglass. I used to repair very high horsepower AC motor drives, I often got in final boards that had burnt spots the size of a nickel . If you didn't clean every last bit of black out of the hole it was guaranteed to come back on you as a warranty repair. I kinda miss that job, one of the few jobs were I got to stay in one place and just work on broken stuff. My training is radio repair in the USAF so anything with RF interests me. Good job getting that final repaired. I would be interested in seeing how long that repair lasts.
@zman41503 жыл бұрын
Great job Peter! Quick question - my radio has the 2SC3102 - should I be concerned with this part, or can I upgrade to the newer FET?
@TRXLab3 жыл бұрын
no need to upgrade
@sveinfarstad38973 жыл бұрын
Fantastic again Peter!
@TRXLab3 жыл бұрын
Thanks
@W-733_KWX3 жыл бұрын
Again a wonderful video Peter ! Some CB er on 446 PMR ?
@redtide083 ай бұрын
I have an 857d thar recently started behaving strangely. The heat sink gets warm while sitting in receive, with a noticable higher noise floor. It was suggested that the PA relay may be stuck closed and there is PA idle current flowing. Is this something youve seen before?
@stevenmcc60523 жыл бұрын
These are easy repair. Scrape burn glass and carbon. Fill with epoxy. Drill 4 old vias. Add new eyelets. Job done.
@bblod48963 жыл бұрын
Mmmm, BBQ final; so hot the solder melted.
@TRXLab3 жыл бұрын
Yeah BBQ lol
@claudio64933 жыл бұрын
Bravo Peter!!!! Danke!
@VictorDiazBass2 жыл бұрын
Hola Peter, tengo un FT-857D que calienta mucho en VHF & UHF con carga de 50 ohms independientemente de la potencia hay mas de 40 grados centigrados sobre el disipador, V/UHF Idling Current Adjustment seria una solucion? mil gracias!!! exelentes tus videos, saludos LU1DVH
@CT1JRZ3 жыл бұрын
Another good job from Peter…
@TRXLab3 жыл бұрын
Thank you
@EA8CVZ3 жыл бұрын
Very very good operation 👍
@TRXLab3 жыл бұрын
Thank you
@rhythmstic Жыл бұрын
Fascinating ..
@brianwild46403 жыл бұрын
peters back your the man
@600raficrow3 жыл бұрын
i have the same radio .. it still works but i would love to get it fixed by trx bench if it ever broke
@roseelectronics45823 жыл бұрын
Welcome back Pete
@TRXLab3 жыл бұрын
I was always here lol but thank you
@GaryLordsWayMinistry3 жыл бұрын
I would have liked to see the testing of the individual components that were questionable in this video; I know it would make it longer but I think it would also make a better training video, in order to make it more thorough as well, to make it more informative as well.
@TRXLab3 жыл бұрын
well the MOS FET was tested dead on the component tester and the burnt cap there was nothing to test anymore...
@leecwilkin3 жыл бұрын
superglue the pad down, use a 1mm drill bit to clean the holes in the board
@rolftammen44823 жыл бұрын
Also...ich als deutschsprachiger freue mich ja das Du so langsam sprichst...so verstehe ich alles.Aber für nen Engländer muss das ja echt gruselig sein....Ich habe mir schon sehr viele Deiner Videos angesehen und bedanke mich auch für dieses recht herzlich
@TRXLab3 жыл бұрын
Vielen Dank für die Rückmeldung. Gut das man die Widergabegeschwindigkeit einstellen kann
@125southernnh23 жыл бұрын
Just looking at the bench in the background pretty much tells you that this gentleman knows his stuff.
@Russ-3 жыл бұрын
Very nice work Peter, hope your all okey.
@TRXLab3 жыл бұрын
Thank you
@charlesgoede28093 ай бұрын
Similar issue. Mine has has lost it's full 50w/20w vhf/uhf output as well but still puts out milliwatts. Had a slight burning smell just prior to failure. Any thoughts? 73
@Ronl533 жыл бұрын
Thanks for the video. I have learned so much from you. Have you ever fixed the zebra stripes that occur on the 857 display?
@TRXLab3 жыл бұрын
Thanks
@enzobisconti80893 жыл бұрын
Great and clear job!!! 🙂
@TheMaddogronh2 жыл бұрын
Hello, I was watching this again and was wondering if you have made a video on the FT857 that had lines going through the display ? I have 2 FT857's and one developed lines through it,,,, if you have done this could you reference the video number ,, Thank you Ron AC7RH
@davidwalle50253 жыл бұрын
good video and repair.
@TRXLab3 жыл бұрын
Thank you
@elektrophysiklk3 жыл бұрын
great work 👍
@jlucasound3 жыл бұрын
It is supposed to do that! That model was intended to take us back to our roots. Smoke signals. That is how you communicate with this device. (Ya, right!) ;-)
@TRXLab3 жыл бұрын
lol
@ictrepairs69633 жыл бұрын
hi Peter nice video and content as usual! IMHO I’m used to recover from bad shape vias or trough hole connection introducing a piece of copper bonding cable for one side to the other one and solder whenever possible the cable on the pads where the via comes out… I don’t know if you really get what I meant due to the poor explanation. By the way I really envy your deep knowledge and expertise! Keep on rocking
@TRXLab3 жыл бұрын
Thank you! Off course there are always different possible approaches how to handle a problem and your approach is surly a good one.
@SidebandSamurai3 жыл бұрын
@22:11 question for you. Would you have taken the time to remove the carbon from under the trace, then epoxy the trace to the undamaged part of the board. I am asking this question as I am watching the video so you might have already answered the question.
@TRXLab3 жыл бұрын
It has nothing to with time the issue is we have a multi layer pcb and since we don't have a layer plan we can not easily mill out.
@glennhairell88892 жыл бұрын
Awesome!
@baghdadiabdellatif15813 жыл бұрын
Great work Thank you
@TRXLab3 жыл бұрын
Thank you
@thstoerlein3 жыл бұрын
Hallo Peter super Video ich suche eine gute Werkstatt für meinen 857d das er wieder Fit bzw abgeglichen wird hättest du eine Adresse für mich Viele Grüße Thomas DD4ST
@dennisqwertyuiop3 жыл бұрын
another great video
@TRXLab3 жыл бұрын
Thank you Dennis!
@alsanderson4917 Жыл бұрын
I think the through hole plating on the 12V line to the final could not handle the current. especially if no solder was flowed through the 4 holes. This would cause the "Toastiness" and slow burn. The film capacitor was just there for the hot ride. PooF'
@jlucasound3 жыл бұрын
Awesome repair! Are you Belgian, by chance?
@muppetpaster3 жыл бұрын
11:18 Why off camera when it is tricky? Really don't get that...
@TRXLab3 жыл бұрын
very simple the camera is in the way and it is tricky with camera. So I have to do off camera.