#157

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#157

Рет қаралды 23,348

TRX Lab

6 жыл бұрын

Пікірлер: 137

@buckaroobonsi555 6 жыл бұрын

Amazing that you are able to do these video's in English! Great job! Thanks for teaching and sharing your experience!

@TRXLab 6 жыл бұрын

Well I do my very best glad that you like it! Thanks for comment 73

@michaelhawthorne8696 5 жыл бұрын

Hi Peter, thanks for an interesting repair video. I have been working with SMD's for over a decade now and have always found with these 6 pin SOD's or pretty much any SMD chip, the numbering system goes anti-clockwise. With SMD's that have 3 or 5 legs, pin 1 can easily be identified but when it comes to SMD's with 6 pins, you have to look at the direction of the markings to identify pin 1. Orientate the lettering so it reads normally (Left to Right) and is not upside down and pin 1 will be the bottom left pin. In your video, pin 1 should be top left as you have it at right angles to the horizontal plane. I have looked at the datasheet for this SO6 device and the manufacturers have gone against the norm too and designated what should be pin 6 as pin 1 and counted clock-wise instead of anti-clockwise. Boy that's one to watch out for.....

@TRXLab 5 жыл бұрын

Thanks for your feed back, Michael very much appreciated !

@larryk4mu240 6 жыл бұрын

Hi Peter, good video. Excellent repair, you make it look so easy with those little IC's. Thanks. 73

@TRXLab 6 жыл бұрын

Thank you Larry, well sometimes it gets a bit tricky. 73

@Beretta96Dan 6 жыл бұрын

Fine job on the smt replacement procedure. Excellent video and repair. Thanks, Peter.

@TRXLab 6 жыл бұрын

Thank you Dan! 73

@robertrainey1728 Жыл бұрын

Another nice repair Peter.

@iiDougieii 2 жыл бұрын

Hi, This was really informative. Thank you for this video and your time.

@z1power 6 жыл бұрын

Excellent job on a very tough repair. It takes special skills to work on a chip that small!

@robertcalkjr.8325 6 жыл бұрын

Chip Quik works very well for those that don't have a Hot Air Rework station or those that are not very proficient with them.

@TRXLab 6 жыл бұрын

Thanks for watching and Robert is right for pulling this IC's out Chip Quick is very helpful... 73

@paulcollins664 6 жыл бұрын

Hello Peter, I always learn a lot with your video's, another great job.

@TRXLab 6 жыл бұрын

Thank you Paul! 73

@christopherhite9050 6 жыл бұрын

Love your videos!! Think I have watched almost all of them now. Would love it if you would sometime show removing the final transistors from a PCB. I have a very difficult time with this, and would love to see how you get those little guys off the board without damage. Thanks and 73

@TRXLab 6 жыл бұрын

Hi Christopher, yeah that can be very tricky sometimes. I will try to show it but sometimes it is difficult to do this job around the camera...73

@dennisqwertyuiop 6 жыл бұрын

excellent repair , thank you for working hard to show video

@TRXLab 6 жыл бұрын

Thank you Dennis! 73

@andrewrae2813 6 жыл бұрын

Another excellent repair via video. Always waiting to see when your new videos pop up. Tnx Peter

@TRXLab 6 жыл бұрын

Glad that you like it Andrew! 73

@hancecrawford 6 жыл бұрын

Hi my friend another success little tricky I.C as you say you get to pick up these faults with this little I.C it must be a common problem with this I.C As the other guy said (Paul) we learn a lot with your videos but it is not nice to find someone has been in it before you Peter another great job :)

@TRXLab 6 жыл бұрын

Thank you John! 73

@hamandwine 6 жыл бұрын

John, it is a matter of, _how_ someone was already in. There are people that just botch things in. And if you then open the box up, years later, it is this OMG feeling, that hits you. But I have also seen repairs or modifications, that where done so nice and in a professional way, that I would never complain. To me the region around the faulty chip has been already tinkered with before. But it was nicely made, so no reason to argue.

@robertcalkjr.8325 6 жыл бұрын

Good job, Peter. When I R&R an IC in a populated area with Hot Air, I put Kapton tape on the surrounding components to try to make sure none of the tiny resistors or caps get unsoldered. Evidently I'm not as good at Hot Air as you are.

@TRXLab 6 жыл бұрын

Hi Robert, well as long the components are soldered in there is a high tension which keeps the tiny resistors or caps in place...Thanks for stepping in 73

@robertcalkjr.8325 6 жыл бұрын

I guess I don't like to take unnecessary chances.

@iw0hex 6 жыл бұрын

Great job Peter, thanks again for your video. It's the second time that I have seen this issue. Regards, 73s Pasquale IW0HEX

@TRXLab 6 жыл бұрын

Thank you Pasquale..oh you have had also this problem on the bench??

@gvvq-pi5ml 6 жыл бұрын

Hi Peter the one i had would only give out about 2 watts on transmit on 70cms, i sent it to Icom UK and they said it wanted a pair of HF power transistors, so maybe they were weak as well, but i think the 70cms RF power transistor had gone, it worked ok when i got it back, but it cost about £250 to have it repaired....i have sold it now and bought an IC 7100, but i still have another 7000 in the car...that work ok.....from Fred g4vvq.

@TRXLab 6 жыл бұрын

Hi Fred, yeh workmanship is very expensive these days. Thanks for comment. 73

@SquantoTerror 6 жыл бұрын

Excellent video. I always love to watch you repair these radios. 73! de Nick N9SJA

@TRXLab 6 жыл бұрын

Thank you Nick! 73

@stopnwonow5044 5 жыл бұрын

Your channel is very very interesting. I already have seen it some time ago, but this time i'll subscribe. The pity is that I'm spanish, and although I am able to speak and understand the english language a little, sometimes becomes difficult for me to follow you explanations when you speak quick. I own an IC-7000, and I can say that's a great & beautyful radio... but very hot, sadly.. It's too much compact. It is also very sensitive to supply voltage fluctuations. It is definitely a delicate transceiver. Despite I love it. Cheers from Spain.

@izzzzzz6 4 жыл бұрын

You can slow down the speed of youtube videos under the settings wheel at the bottom of the screen. Personally i speed up most of the TRX videos :D

@DK-vx1zc 6 жыл бұрын

Another great video!!! Thanks for sharing.. I learn a lot from your videos. Dan

@TRXLab 6 жыл бұрын

Thank you Dan! 73

@hancecrawford 6 жыл бұрын

well done another radio sorted out so amazing peter :)

@TRXLab 6 жыл бұрын

nice little radio with so many issues...73

@hancecrawford 6 жыл бұрын

Peter when I was working we had industrial electronics and had a theory if electronic run for the first 3 hours it should run for the next 30 years we used PLCs Programmatical Logic Controllers as we had operations 24/7 365 days production :)

@TRXLab 6 жыл бұрын

Hi John, yes that is what we always saying as well. either components fail on a very early stage or they work for a very long time..Thanks for comment 73

@ot7e 6 жыл бұрын

Verry nice instructive video Peter, many thanks!

@TRXLab 6 жыл бұрын

Glad that you like it Mathieu! Thanks for watching 73

@r.f.lab-renefilho1453 6 жыл бұрын

Nice Peter ! This component is critical to cause problems ! 73's

@TRXLab 6 жыл бұрын

Thanks Rene 73

@charlesw318 6 жыл бұрын

Great work Peter thank you for sharing.

@TRXLab 6 жыл бұрын

Thank you Charles..73

@lyntonprescott3412 5 жыл бұрын

Fantastic work as usual. Well done. 73’s

@geofham8332 6 жыл бұрын

Great video Peter, thank you. I would love to see your replacement soldering method please, if you have time.

@TRXLab 6 жыл бұрын

Thanks! concerning soldering there are older videos on showing the soldering process but will show it in the future again. 73

@berniken6511 6 жыл бұрын

Thanks for the video Peter, good job............They must have received a bad batch of those chips at some point......................................Berni

@TRXLab 6 жыл бұрын

Thanks for watching Berni! Well don't think that I received a bad batch as I'm swapping out what the factory put in. May be there was an issue in the past??

@fey4949 6 жыл бұрын

Another fine repair Peter. Why does the ic741 fails so often? Oscillation, return signal on his output or pulses who knowes. Thanks Peter for the video.

@TRXLab 6 жыл бұрын

Thank you. Yeah it can be anything would need an in depth investigation but that is very time consuming...73

@THEDIMZ8899 6 жыл бұрын

Another great tutorial! Nice! Hi from Indonesia!

@TRXLab 6 жыл бұрын

Thank you Dimas! Greetings to Indonesia. 73

@aussiedazvk4djh889 6 жыл бұрын

Another great video Peter. 👍

@TRXLab 6 жыл бұрын

Thank you ! 73

@jjl6519 6 жыл бұрын

Thanks for another great video, I always learn something from them, 73/N3JJL Joe

@TRXLab 6 жыл бұрын

Thank you Joe! 73

@btouw8558 6 жыл бұрын

i do, i like your video, and i have learned something, and a thumbs up

@reallybadaim118 6 жыл бұрын

I want your test gear on my bench. Very nice setup.

@TRXLab 6 жыл бұрын

Thanks for watching 73

@musicmakelightning 6 жыл бұрын

Another great instructive Video, Peter. 73 Joe AL3A

@TRXLab 6 жыл бұрын

Thanks for watching 73

@hamandwine 6 жыл бұрын

Nice work again, as always! 73!

@dalebrooks6816 6 жыл бұрын

Hi Peter good job troubleshooting this radio. I was thinking maybe the IC is not able to distribute the heat to the board as it should. The very small package and multiple transistors in such a small area must run fairly warm and if too much heat accumulation occurs the chip will eventually fail. Just a thought,,,,,73's Dale kg7ssb

@TRXLab 6 жыл бұрын

Yeah I'm also thinking it is a vent issue but have no time to investigate it ...Thanks for watching 73

@TheDefpom 6 жыл бұрын

Some surface mount ICs have a slightly thicker pin to designate pin 1.

@TRXLab 6 жыл бұрын

That is true but this IC no good indication...

@AbrunheiroTrindade 4 жыл бұрын

Very nice, comprehensive and didactic! We are grateful having tutorials like this one. Congratulations! Just one question: what the spectrum analyser you utilize in this video? Perhaps is PC based one. Thanks for answer me. 73's PY8RT.

@jfrede1976 6 жыл бұрын

At the moment i have also a IC-7000 on the Bench. It has the exact opposite problem. Seems that i have a defect dual gate MOSFet in the VHF Path. 73 de DK3JF

@TRXLab 6 жыл бұрын

Hi Jörg, very interesting but that is than due to much power into the VHF path, right ? 73

@jfrede1976 6 жыл бұрын

Yes the OM had a bad HF antenna next to the VHF antenna and sending with about 1KW. Some of the reflections seem to have found the way into this radio which was receiving on VHF.

@hotforit 6 жыл бұрын

Thank You so much for sharing. I learned more than a little bit :-) 73 Ralph KB1ZYI

@mikesradiorepair 6 жыл бұрын

Another great repair Peter. Have to wonder what the problem is with these IC's. Possibly a overload at the input is burning them out caused by a extremely strong incoming signal.

@TRXLab 6 жыл бұрын

Hi Mike, of course that is always a possible cause but I think is is rather more a vent issue or a ESD thing.. Would need much more time to investigate such issues... You know how it goes..73

@douro20 5 жыл бұрын

@@TRXLab ESD shouldn't be an issue with a bipolar design...

@bigchew3149 Жыл бұрын

i know this is a older video & the Ic-7000 is not the newest radio out now days but is it still a good starter radio..i have ben into radios all my life but 11m only & i ran a small repair shop for years to But i have not ben licensed long at all & want to get into 6m & listen to hf to learn for my general ticket i talk a lot on (2m & 70cm) & this will be the best way for me to learn But if this radios isnt very good i would like to know from a pro! Thanks !

@dovidpfeiff7386 2 жыл бұрын

Tnx for another great video ! Which heatsink grease do you use ? Must it be silicone- and water free ? Tnx es 73 from Dovid 4Z4DP

@rikky866 6 жыл бұрын

good work Peter 73

@TRXLab 6 жыл бұрын

Thanks Rik! 73

@TheRadioShop 6 жыл бұрын

Good fix Peter. This really makes me wonder why this happens so often. I see this problem in the Alinco VHF/UHF rigs and the Kenwood VHF/220 MHz rigs. Always the UHF or 220 MHz band dies. Wonder if this is a design problem? Thanks as always for sharing your skills. 73

@TRXLab 6 жыл бұрын

Thank you my friend! Well my suspicion with the IC is a vent issue or an ESD thing but not validated. Thanks for stopping in 73

@gvvq-pi5ml 6 жыл бұрын

Hi All to Anyone interested, as seen below i have an IC 7000 that is about 3 Khz off freq on 70cms and about 1 khz off on 2 mts, on tx and rx, hf isn't far out, but apparently there is only the one thing to set, there is no adjustment inside the radio, and the REF in the OTH menu only goes a few hz either way, but if you go into the hidden menu, see Bib Nagy video on that, using a a jack plug in the back you are supposed to be able to move it about 5 khz shall we say, at least, the numbers are in Hexadecimal, mine is on AD, now i tried to change it, i went form 00 to FF that's the whole range, and it dint alter it at all, i was supposed to, so i am now sending it to Icoms in Kent,,,,just thought someone might be interested hi...seems the radio must have a fault on....from Fred g4vvq in England.

@gvvq-pi5ml 6 жыл бұрын

Hi Peter i haven't put a counter on but think friend who repairs radios has, but i have also checked it by a beacon that transmits on 432.430 and that's on 432,434mhz on mine from Fred. g4vvq

@TRXLab 6 жыл бұрын

It still sounds that the master ref is off. But can't tell you from the distance why you cant influence it...73

@gvvq-pi5ml 6 жыл бұрын

Yes i think there is a component fault of some sort that wont let it adjust the REF OSC, Fred

@gvvq-pi5ml 6 жыл бұрын

Hi Peter Just for you information, i have a 7000 that is about 3 khz off freq on 70 cms, , i made a shorted jack plug and it worked, plugged it in and turned it on as per manual and came up with set mode and the options, it was set on AD in the REF, the scale is from 00 to FF i wound it from one end to the other and it made no difference whatsoever and yes i did press SET hi....it said REF REF OSC and the first REF was highlighted i couldn't high light the other two so i assume that was just telling you it was REF OSC, there are an UP and DOWN arrow and they did nothing, i tried pressing /holding every knob on the radio and did nothing......from Fred G4VVQ.

@TRXLab 6 жыл бұрын

Hi Fred, hard to say from the distance. Sounds that you did all right. Have you tested with a counter on?? 73

@mikaelkarlsson9945 6 жыл бұрын

Hi Peter.. Another successful video of yet one more repair. Well done! Are you using your VNA for checking the RF level in this video? (Still a MiniVNA from mini radio solutions?) In that case, which kind of probe do you use to measure directly on the IC?

@TRXLab 6 жыл бұрын

Hi Mikael, no I'm using a Signal Hound Spectrum Analyzer for this job. Thanks for stepping by 73

@PelDaddy 6 жыл бұрын

Nice job. Thanks for sharing.

@TRXLab 6 жыл бұрын

Thank you 73

@VOLKZZORN 9 ай бұрын

Das Video ist 5 Jahre her aber hoffe du liest das noch , hab hier das gleiche Gerät aber es macht Kopfschmerzen Empfang top aber sobald es auf Sendung getastet wird schaltet das Gerät ab und fährt dann hoch , angefangen hat es das in 5 Watt Betrieb das Gerät schon über 30 Amp gezogen hat , was es jetzt zieht weis ich nicht weil es bei PTT Träger gleich abschaltet ! Ich Rätsel was das ist aber komme nicht wirklich drauf 😔

@medvidekkrupicka1404 6 жыл бұрын

Dear Sir, I love your videos, they are very clear and instructive. We all learn a lot from you. What kind of flux you used while your solder job on that amplifier IC? It seemed like a really good one.

@TRXLab 6 жыл бұрын

Hi thank you for feed-back...I use AMTECH NC559 Tacky Flux..73

@peterjones3245 4 жыл бұрын

i noticed on the block diagram with the 70cm path, there seems to be two pre-amps each preceded by a band pas filter. With the 2m path there is only one pre-amp with a band pass filter before and after it. Might this be relevant to the fault, as this seems to be the only difference between the two paths?

@TKomoski 6 жыл бұрын

I know nothing nothing ... Just kidding I wonder Peter if the old man didn't tell you what was wrong with the radio. And you just turned it on could you possibly tell what component/s was at fault without testing? I would imagine if you work on a hundred you would see a common fault. Would you ever consider upgrading a component to a more stable or suitable replacement to lessen the failure rate. Would the or a manufacturer revise the schematic to include newer parts to repair a common problem? I know I ask to many questions but who would I ask for radio repair advice but the TRX bench. Good little fixer Peter Cheers 73

@KD0CAC 6 жыл бұрын

Same question here - try to upgrade common failure point ?

@TRXLab 6 жыл бұрын

Very good questions Tom! Yes I see conmen faults even without testing. And upgrading is a very serious issue which needs to be done with responsibleness. Before I perform an upgrade I do a lot of testing/ investigation and try to find the root cause. So many things could potentially be wrong and it takes a lot of time. Time which I don't have....Additional to that with micro SMD you always have space issues. With more space you can replace parts even in different bigger sizes but you can't do it here. I have 25+ years experience in factory development and product management and I know what all is involved in such an process and believe me to have something reliable you also need support by the supplier of the IC. This is consumer electronics and today vendors stop a product rather more than putting a lot of expensive effort into it. See this radio was from my point of view very quick EOL..Hope that explains it hopefully a bit. But if I can oversee a situation clearly I do upgrades of course... Cheers and 73

@hancecrawford 6 жыл бұрын

peter another success could a spark arrester not be fitted to protect the little I.C would be a manufacturer issue to devise if something could be done would that little I.C be very expensive as a matter of interest :)

@TRXLab 6 жыл бұрын

Hi John, yes there are ways to protect the IC but first we need to know why it was blown..Thanks for watching 73

@worroSfOretsevraH 6 жыл бұрын

Hi Peter. Can you explain why the alignment procedure in service manuals tell you to set the test frequency to something dot 100 MHz? (ex. 430.100MHz or 14.100MHz ... instead of round frequency 430MHz, 14MHz, 50MHz ...) Thanks.

@TRXLab 6 жыл бұрын

Without checking it for this radio it is normally set not to be close to the band edges of the VCO. Or for some other alignments to be as close as possible....73

@drewsmith6066 6 жыл бұрын

Nice fix well dune.

@TRXLab 6 жыл бұрын

Thanky ou Drew 73

@hancecrawford 6 жыл бұрын

Hi my friend just wondering what would cause the little I.C to blow is there nothing which can be done to protect it Peter?

@TRXLab 6 жыл бұрын

Hi John, most likely more airflow can help but I have no time to investigate it more...73

@orbitingeyes2540 3 жыл бұрын

Hi Peter, I have a vintage IC-471H. Have you ever worked on those? It seems to have developed 2 problems while in storage - no TX audio, and low RX sensitivity. Any suggestions? Tnx & 73, WD8QCN

@TRXLab 3 жыл бұрын

check TX/ RX switch first

@Earl_of_Peck 6 жыл бұрын

I love my IC7000. I have had it since 2007. I would like to align the radio, and was wondering if you could show how you do it? have access to Cobham 8800Sx, and other calibrated test equipment

@TRXLab 6 жыл бұрын

Hi David, under normal circumstances the radio does not need a alignment or is there a specific issue with the radio?

@Earl_of_Peck 6 жыл бұрын

TRX Bench, just personal accomplishment and pride of being able to take care of your equipment. I have had a mod done on the mic (AB5N). And i have had it 10+ years

@FlexxVision 6 жыл бұрын

nice work

@TRXLab 6 жыл бұрын

Thank you 73

@revadan 6 жыл бұрын

Todd does the latest MC60A still have the RFI problem? or kenwood fix it...

@TRXLab 6 жыл бұрын

Sorry don#t know what you mean... 73

@vladimirdudnichenko6067 6 жыл бұрын

All videos are very helpfull. Very clear english especially for non english speaking people. 73! de UW5EJW/MM ex UT5EKF/MM

@TRXLab 6 жыл бұрын

Glad that you like it Vladimir! 73

@stevec5000 6 жыл бұрын

Did you notice the little IC has a dot by pin 1 on the bottom?

@TRXLab 6 жыл бұрын

only on the data sheet not in reality...Thanks for watching 73

@tlrptg 6 жыл бұрын

the question is: WHY is that component failing multiple times?

@TRXLab 6 жыл бұрын

Yes that is a good question I believe a vent or ESD thing...

@hotforit 6 жыл бұрын

When you say vent, are you referring to overheat as in lack of airflow? I just acquired a used IC-7000. It does run hot as all reports have mentioned. I'm going to experiment using an externally mounted 50mm fan over the internal fan to supplement the airflow as a temporary solution.

@mistermeanor968 6 жыл бұрын

Nothing but trouble the icom 7000.

@UBIQUITAR 6 жыл бұрын

I'm very interested to send you a radio for repair. ICOM IC-7000 HOW can I contact you directly?

@josemiguez2375 6 жыл бұрын

In the minute 21 you say that the signal level from the generator is -80dbm and the signal level at the ic input is -72 dbm so 8 dbm upper(more strong) than the first and no lower like you say.at this point there is a 8dbm gain and not a 8dbm attenuation.please say me if i'm right or not.Thank you for share your knowless,and for speak in english,i understand you very well and my english is poor.greetings from spain

@TRXLab 6 жыл бұрын

Hi Jose of course you are right from the generator to the input of the IC we have a amplification. Important is from the input of the IC to the output of the IC and there we have a attenuation. But again you are right! 73