Almost an impossible repair with typical home lab equipment - these SMDs must stop becoming smaller, else will will soon need to be replacing the entire PCB in case of failures! Good job Peter, thank you. 73, Kostas.

gosh I really like the way germans speak with such civility. now with the muslim invasion, they will have to learn to talk to people even in their neighborhoods a different way, because these people are not 3rd worlders, they are anti- western, in almost every respect, and our technology, they will bend to nefarious deeds. thank you derrik for such awesome work.

Thank you for talking-and-showing us through your diagnostic thought processes. Very interesting.

Another great video! I was an electronics design engineer at Marconi back in the 1980's and 90's and you have inspired me to re-start my hobby.

Thanks Peter for sharing your repair of this radio. I am sure the "Old Man" was glad to get his radio back. As always, look forward to your next video. Robert.

Thank-you for these excellent videos. A friends IC-7100 had this fault, luckily the low value resistors and the protection diodes were ok, so a new transistor and the radio was good to go. I really enjoy both yours & Mr Carlson"s videos for the logical approach you both take in fault finding, keep up the good work.

Peter I like the way you troubleshoot. I all so like the way you think about alternate solutions with paralleling the resistors. Great Work :)

Really enjoyed seeing your work, and especially because you can admit when you make a wrong assumption. That shows confidence. Well done and thank you again.

very nice video Peter it was good of u to show how easy it is to come to the wrong conclusion sometimes i do this allot but u corrected your self very quickly and made a very good job of it. well done my friend.

Fantastic video Peter and a great lesson, personally I would have thought that there was an error in the schematics regarding those resistor values and I never would have considered testing the coil, but that is why you are the master and am watching you tube videos. Great job! and thanks for sharing your wisdom, I really do mean it. Keep up the great work!!!! 73

A really involved and great tutorial. I really like these deep technocentric research and repairs. Thanx for the video

Great video. We learn something every day. I always enjoy your videos. Thanks Pete.

Nice troubleshooting Peter. Did not surprise me to see other components failed. Another fantastic repair..

This Rig is very very problematic. But have one good technician for repair. Good job!

Great video. I would go blind working with SMD, I like my point to point. Maybe one day I will practice on some old SMD boards I have and see if I can do it. Thanks again Peter, another excellent lesson in electronics.

Excellent job, Peter! Looks like you have been getting some repairs lately that other guys wouldn't touch! Keep up the great work. 73...Dan w4mnc

Thank you for this video. My IC7100 has this fault and it helped me decide the course of action. I cannot test this mself as I do not have the equipment, but I did learn a few things. Cheers and 73, VK6PCB.

Hi Peter , We always learn a lot from your videos thank you and congratulations to the great videos

Another great troubleshooting video, great job Peter, thanks Greg

u r a brilliant mind. I though would just change the whole board. not much of price difference but more years of service and piece of mind.

Danke Peter, wieder klasse 73

Another great repair Peter. Thought I was the only person that stacked SMD resistors to make up the value needed. Been a few years since I have had to do it but it works perfectly fine. I finally broke down and purchased SMD resistor and capacitor kits for pretty much all the different case sizes. The sad thing is I probably have a few hundred thousand SMD components and could probably pick them all up with one hand. Man those 0201's are tiny. Thank God for microscopes. :) Mike

Very nice video Peter, thanks a lot; i had the same problem with a Kenwood TS-590, diodes are faulty and coils open. Compliments, 73s de IW0HEX Pasquale.

Awesome work man!

Hi Peter, Another nice repair video. Seems more Icom radios are making it to your repair bench. :-) When you had that tiny mosfet on your finger tip, I was thinking DON'T SNEEZE. You would never find it. Nice that stacking those two smd resisitors solved that problem. WB3BJU

Thankyou Peter really good camera work on this one.

Hello Peter! Nice video and a good troubleshooting!

Very thorough and informative as always my friend. Regards John

Very interesting. Another great repair.

Nice job

Thank you

Lightning damage? I have done radios like that when the antenna been left inline when a thunderstorm was active…the repair was well done but I always like to know what caused it.

I would of gone straight to the protection diodes that are across the RF input of the vhf section and test them, before anything else, I have seen input protection diodes blown many times, without damage to first RF amp.

As always good video, thanks a lot.

Great work thankyou for video

It looks like the deal gate had been remplacerend before. The solder job is different than the serounding solder.

Somebody else would have just stopped going ahead after replacing the dual gate fet.

Hola soy mexicano. Y tengo un icom ic 2100h pero dejo de trasmitir que me recomiendan. Gracias espero alguna ayuda

Nice one Peter. M3KQW 73s

Sehr schönes Video, ihre Videos gefallen mir im allgemeinen sehr gut da alles immer sehr schön anschaulich dargestellt wird. Sind sie auch Funkamateur oder gelernter Hochfrequenztechniker? MFG Jann

great vid well dune on fixing it

I have to guess this is the same 7100 that was in a bit ago due to overvolt? if so got to suspect that overvolt did more damage then thought, maybe not outright killed parts, but weaken them down and over x amount of time they just go. if that is the case it would not shock me to see that 7100 again on txrx bench.

i have 7100 vhf is 17watts to 20 watts only uhf and hf, no rx and tx is there a chance to repair?

Nice Jobe, as usual, Peter. I think Gordon Foster might have forgotten about capacitive coupling from the signal gen tip? However, if my eyes did not deceive me, the 4.7 ohm R was replaced by a 100 ohm R, not 2 x 10ohm R?? Or is it that I have been drinking too much? Hick!... 73 Tony

Hello friend where can i find this part to buy? my ic-7100 has the same problem thank 73

Hi Peter. Great to watch another repair. I wonder if you have an idea what caused that high DC voltage that killed those components? 73 Joe AL3A

I have that problem on my 7100 nothing on 2 meter.

Peter, did you choose larger resistors on purpose? Larger means higher power (mw) so should survive similar high signal input event again without "toasting".

Please i use ICOM V8000 suddenly, it does not send and never receives what do you expect the reason for… thank you bro…

another nice repair just about the right amount of detail. One question what is the part Q552? I googled LOTC143ze but got no result

Hi noticed that at 20:53 you are injecting a signal in to get the receiver to work but the screen has the TX lamp on so its trying to transmitt.

Wonderful !!! What would have caused the failure?

You cannot have point one hundred. It's point one.

Oh, and any idea what could cause this fault? Or is it just something that happens after a certain age?

I need the filters replaced on my 7100..I was wondering how to get ahold of you to send it to you?

hallo sir...my old icom ic 2100 no rx please help me..thanks

Nice video as usual , where can i buy the red color probe which is spring loaded and what is it called

Is this the same Radio IC-7100 that you fixed on video #112 killed by over voltage?

@ 48:20, top left above green coil, there are two resistors. 330 and 47. The 4-something resistor also looks burnt. That circuit is for another band right? Also for the two open resistors the dark spot in the middle was a dead giveaway that they were blown. But again, i am young, have sharp vision and a big 1080p TV to watch these on. :) I do enjoy the detail that you go to in your videos. Regards.

My ic7100 just developed this problem. How many others have had this issue?

Hii bro my ICOM IC 2200H RADIO PROBLEM OUTGOING FAST BUT RECEIVED NOT found Tx OK but Rx not coming what is the problem sir

thats what you get when two radio's and antennas are to close, burned the hell out of this radio, wonder that there is nothing wrong else as this coil, and the two resistors!

I had to laugh, looking at the removed components on the lighter colored paper. fly specs. I laughed because I would like to think back to a 1940's tech, looking at this video, what he would have thought as he put in the next dog boned resister.

Toooooo booooooooring to watch