It's such a nice feeling when a repair is completed. It seems that a possible overvoltage took out the tantalum capacitor (and the 8 volt receive regulator and the 8 volt transmit voltage) which shorted out that 14-volt line, which caused the coil to burn out. Glad you prevailed in that fight. Have a good weekend.
Just awesome, the sound in your voice when you have successfully repaired is unforgettable, I do the same thing. Such a great moment bringing these things back to life!
Hallo Peter, ich wünsche Dir und Deiner Familie ein frohes, friedvolles relaxtes Weihnachtsfest. Vielen Dank für Deine tollen Beiträge auf Deinem YT Kanal
Excellent video. You also taught me a great deal about tracing the fault in the system. Perseverance, perseverance, perseverance. Peter, you are not only a brilliant technician, but also a great teacher. Please continue with your wonderful videos. BTW I have used the IC-765 many many times at our clubhouse. It is an oldie, and a goodie.
42:01, 1:06:35 the moments that make it all worth it :) wonderful detailed troubleshooting, many thanks for your efforts to produce it and share the knowledge.
Such a nice repair. Another radio is saved from the landfill. Really nice to see what starting points you use in your fault analysis to find the defective parts.
Well done! And thanks for doing this video. I tried to sum up how all those components got broken at the same time, but didn't quite manage. Voltage spikes can do weird things for sure. Tantalum caps are too prone to failures, I don't use them anymore if possible. I must thank you to save all these nice old radios and give them more life. I like them a lot. I have a IC-761, these radios are beasts!
Hello my friend Peter. That rig was a basket of trouble. You showed what it takes to be a GREAT technician. Merry Christmas to you and your loved ones. Blessings & 73 Leo
I love these type of repair videos. Very informative, great repair job glad she came back to life. That's a very nice radio. Happy holidays Peter to you and your family.
Great job Peter. I heard the frustration in your voice a couple of times with another problem popped up. You had me glued to the edge of my seat watching it on the big screen TV.
Greetings! I like your persistence as you explore this rig. I'm surprised at how many components have failed. Thank you for taking the time to record this repair. 73 and Merry Christmas 2022.
WoW Peter. I admire your patients. While I was never a fan of SMD circuitry I can now see how fault finding is a bit easier with SMD's. From experience over the years I found the early Japanese radio equipment voltage/component wise sailed very close to the wind. That job was really a nightmare of a job. I hope you slept well after that job. EI6DP
Phew... What a challenge. Awesome job Peter! But also what a beautiful mechanical build quality: The rig looks even better with the front panel off. I started to drool a little... 🤤 That was well worth to rescue! 🤩
Great troubleshooting TRX Lab! I enjoyed watching you fix 5 problems in a Radio! I also thought it was funny you called TX8 in German: "Acht" at 59:32. One typo I found: at 22:06 you said MicroFarad which obviously should be MicroHenry. It even says it on the Tag. Well done!!
Hi Peter, It does take some work locating and repairing multiple problems. Glad you were able to find them all and have the radio working again. I like how you describe the process to determine what is at fault and the steps to make the repair. Stay safe. 73 WJ3U
Great Job Peter! I love going on these troubleshooting adventurer with you. It is very interesting to see the logic you use to find the problems. Thanks Again! Happy Holidays to you and your family.
Great video Peter, this radio had a several problems but you fixed all with great skill ! Thanks for sharing, great repair my dear friend. 73s de IW0HEX Pasquale
Fantastic repair & approach there Peter. Wow, they made you work really hard for this rig & so glad you were patient enough to resolve them all. Appreciate all the easy to follow steps & learning so much watching your videos. Been also recommending your videos to newbie & not so newbie hams & people interested in electronics who want to get a better idea about radio repair. Wishing you & all your family a very merry Christmas, happy new year & all the very best for the festive season
Wow Peter that was an awesome feat of fault finding. I thought you were all done when the tantalum was changed but it wasn’t to be. Great job tracking multiple faults down. The owner will be pleased. Regards Graham
I love this kind of troubleshooting videos, I learn a lot from them. It also shows how important it is to have a good and complete set of testing equipment. Congrats with this fine diagnosis & repair job! Finally, the bottom line message is, that smoking is bad for babies (ref 0:37)... 73 de HA7RJA
Hi Peter. You certainly earned your money for this radio repair. Well done as usual, interesting video. Wishing you a very Happy Christmas and a Peaceful New Year to you and your family, hope to see many more videos in 2023! 73, Brian EI8EJB
Hello Peter, it is allways a plesure to watch your videos. This couple "different" problems of the Radio look to me from a near lightning hit. All regulators are connectet togeter via gnd... even the capacitor witch was blown. I hat allmost the same ott problems after a BIG lightning hit pretty close to my house. The realy high tension came over the GND and produse the same faults in my equipment. But with schematics and a litle luck i was able to help me out.🙃
Hi Peter, Another interesting video. You notice that the faults are all to do with 14 volt supply which would suggest to me that the 14 Volt rail has spiked at some stage causing the tant, voltage regulator and various regulating circuits to fail. ICOM mains PSU’s are notoriously problematic. I would check the condition of the surge arrest circuits in the front end of the PSU along with the capacitors and the usual stuff as it may just do it again. Best Regards John
@@TRXLab Hi Peter thanks for getting back to me. To be honest at this vintage I don't think switched mode PSU's age that well generally. It’s an interesting failure, it may have been that the tant shorted and the PSU over shot the target voltage when the short condition cleared. Great video as always BTW I love all the fault diagnosis you really are a master at it. Hope all is well, very best regards John M0XFX
The one radio I would love to see fixed is the Kenwood TS-440S. This radio suffers from the Sony Bond unlock problem I would love to see someone who knows what they are doing address this on this old but very nice radio.
Peter This was a very great video well explained and very professional. Very clear explanations you really one of the best on You Tube Love your videos and watching older ones very exciting to watch and learn. Very kind of you to share peter 73's de WB7QXU
Very good job Peter. One could almost assume that this device was specially prepared for you. Hidden Camera ;-) ? Ich wünsche Dir ein frohes Fest! 73 de Bernd
Tear drop Tantalum capacitor's, I don't know how many I have seen over the years that they short and burn like that. Some will emit so much smoke that you'll think something really bad has happened. I know designers use them for there low ESR rating but if it's in a not so critical circuit I've just replaced them with an equivalent electrolytic type.
If it smokes, take away its cigarettes! Love yer videos. From where are you? The Netherlands? You have the patience of a saint. W Rusty Lane K9POW in eastern Tennessee
Oh $#^&!... 😒 don't you just hate instant cascades of seemingly unrelated problems like that - all caused by a simple failure of one 20c component! VERY nice job, Peter!
I must have missed this video when it first came out but wow what an intense repair. As always Peter you have demonstrated your excellent diagnostic and repair skills. What was the total hours spent on this repair ?
You can see why radios such as this are becoming unrepairable. Not that they can be repaired if the parts are available but the cost of bench time rapidly becomes more than the radio is worth.
5 problems but presumably it was working before it smoked. One common denominator is the 14 volt supply. Is it possible that either an operator error or a momentary power glitch could have caused all of these to fail at once? A momentary high voltage on 14 is one possibility. The 16 V cap failed taking the inductor. The regulator failed also which could have been overvoltage transient. Hardest to explain is the driver transistor for the TX switch. W5PZT
The momentary glitch was the Tant shorting out. They are well known for this. I think that event might have caused a transient on the 13.8V supply regulation that contributed to the other failures.
I have the same radiostation icom 765 and its not working,i cant to start the station,when i pres start butom nothing hapends, can yuo tel me ehat to do,what to check?
We are privileged this brilliant man makes these videos and makes them speaking English. Thank you very much good man.
Thank you
@@TRXLab hi, how can I contact you???
It's such a nice feeling when a repair is completed. It seems that a possible overvoltage took out the tantalum capacitor (and the 8 volt receive regulator and the 8 volt transmit voltage) which shorted out that 14-volt line, which caused the coil to burn out.
Glad you prevailed in that fight. Have a good weekend.
well i think it was more a failing tantalum which is known from this old components. A spark did the rest..
@@TRXLab
Could be.
A privilege to enjoy a great video from you on a weekend peter, thx very much for the effort making it for us
thank you!
You are a radio wizard..... it's such a pleasure to watch you work.
A lot of faults on that one Peter, but as always you solved the problems. Good job on the repair. Thanks for sharing
Hi Buddy, thanks for stepping by!
Just awesome, the sound in your voice when you have successfully repaired is unforgettable, I do the same thing. Such a great moment bringing these things back to life!
Peter is a wizard! Great job
well done Peter you had your work so many problems Merry Christmas & Happy New Year for 2023
WOW, Peter, I would be starting to regrow my hair after that repair. Nice work and thanks for your Videos, Carl.
Rule #1 Thou shalt check all voltages. Really liked this one.
Well done Peter, incredible so many things wrong with it to go all at once...well done...Fred.
Welcome back to the 765! Great vid and repair
"... it´s an external internal switching mode power supply... " simply great💪. Keep up the great work. 73
isn't it ? lol
Remarkable, & well done, Excellent!
Seasons greetings and best wishes for the New year!
Wow, I just love these head scratchers. Fantastic repair.
Awesome troubleshooting. Totally enjoyed following along with your persistent approach!!!
Tthat was a marathon journey, thanks so much! Wonderful to experience the ins and outs of troubleshooting this with you, thanks :)
Very grateful and appreciate your content.
Hallo Peter, ich wünsche Dir und Deiner Familie ein frohes, friedvolles relaxtes Weihnachtsfest. Vielen Dank für Deine tollen Beiträge auf Deinem YT Kanal
Excellent video. You also taught me a great deal about tracing the fault in the system. Perseverance, perseverance, perseverance. Peter, you are not only a brilliant technician, but also a great teacher. Please continue with your wonderful videos. BTW I have used the IC-765 many many times at our clubhouse. It is an oldie, and a goodie.
42:01, 1:06:35 the moments that make it all worth it :) wonderful detailed troubleshooting, many thanks for your efforts to produce it and share the knowledge.
yes we all need those moments..
First rate methodical diagnosis. Great pro at work. Thank you so much for great videos.
Such a nice repair. Another radio is saved from the landfill. Really nice to see what starting points you use in your fault analysis to find the defective parts.
Well done! And thanks for doing this video. I tried to sum up how all those components got broken at the same time, but didn't quite manage. Voltage spikes can do weird things for sure. Tantalum caps are too prone to failures, I don't use them anymore if possible. I must thank you to save all these nice old radios and give them more life. I like them a lot. I have a IC-761, these radios are beasts!
Hello my friend Peter. That rig was a basket of trouble. You showed what it takes to be a GREAT technician. Merry Christmas to you and your loved ones. Blessings & 73 Leo
Thank you Leo! Merry X-Mas73
Nice video, thx. Und schön zu sehen wie man sich über die eigene Arbeit freuen kann phantastisch.
sonst könnte man das nicht machen..
@@TRXLab Das stimmt, weiß der Programmiewrer zu berichten, es ist wie Fallschirm springen :-)
I remember when i bought the IC-765 back 20+ years ago. It was a great RTX. Nice repair job.
I love these type of repair videos. Very informative, great repair job glad she came back to life. That's a very nice radio. Happy holidays Peter to you and your family.
Great job Peter. I heard the frustration in your voice a couple of times with another problem popped up. You had me glued to the edge of my seat watching it on the big screen TV.
yeh you are right bench time is always the problem. Thanks for watching
Greetings! I like your persistence as you explore this rig. I'm surprised at how many components have failed. Thank you for taking the time to record this repair. 73 and Merry Christmas 2022.
My all time favourite iCOM Base TRX before the IC-775DSP came out. Happy Holidays Peter & keep up your fantastic Work. 73 de YFUG 💯🙋♂
Happy Holiday!
That’s brilliant work just shows you a fault snow balling in to loads of faults…..
Very nice work thanks for sharing…..
Thank you!
WoW Peter. I admire your patients. While I was never a fan of SMD circuitry I can now see how fault finding is a bit easier with SMD's. From experience over the years I found the early Japanese radio equipment voltage/component wise sailed very close to the wind. That job was really a nightmare of a job. I hope you slept well after that job.
EI6DP
Thank you! Yes agreed it is much easier to work with SMD as long you took your time to get familiar with SMD's
Phew... What a challenge. Awesome job Peter!
But also what a beautiful mechanical build quality: The rig looks even better with the front panel off. I started to drool a little... 🤤
That was well worth to rescue! 🤩
lol yes nice radio.. Thanks
Great troubleshooting TRX Lab! I enjoyed watching you fix 5 problems in a Radio! I also thought it was funny you called TX8 in German: "Acht" at 59:32. One typo I found: at 22:06 you said MicroFarad which obviously should be MicroHenry. It even says it on the Tag. Well done!!
Intensive watcher :-) That all proves that we all are humans at the end..
@TRX Lab So true! Please don't take it as bad critic, I am really impressed with your work and learn from it!
Well done Peter, a pleasure to watch you at work.👍🏻
Hi Peter,
It does take some work locating and repairing multiple problems. Glad you were able to find them all and have the radio working again. I like how you describe the process to determine what is at fault and the steps to make the repair. Stay safe. 73 WJ3U
Thanks Don 73
No better feeling when you finally find it, it's like finding the golden egg. Thanks for a great video. 👍 73
Das war "endlich" wieder mal ein anspruchsvolles Projekt - Good Job DANKE !
Still a flagship in daily use by me. Great repair job! 73 de DJ7WW
Great Job Peter!
I love going on these troubleshooting adventurer with you. It is very interesting to see the logic you use to find the problems.
Thanks Again!
Happy Holidays to you and your family.
Thank you
Amazing job Peter 👍🏻
Rather a hard nut to repair the old 765!!! Thanks Peter for the video!
yeah that was a beast
Holy smoke ... yet another great video by Peter & Olaf ... 73s de DL6RDE / AA1KD, Charlie
Well done Peter, it is never fun when a radio has multiple faults that do not seem to be related.
With 5 repairs Peter, you can almost say you have made a restoration!
Great job Peter. That must have taken alot more time to do than what the video shows. Thanks for sharing your skills. 73 de KB7ICI....Bill
yes that is true.
Enjoyed the repair, Thanks for sharing.
Impressed on how you dealt with that Drama Queen Yaesu !
Beautiful and amazing repair!
Great video Peter, this radio had a several problems but you fixed all with great skill ! Thanks for sharing, great repair my dear friend. 73s de IW0HEX Pasquale
Thank you my friend! 73
Deine Arbeit ist einfach unbezahlbar. Fantastisch. 👍👍👍
Danke für das Lob!
Nice repair video, i enjoy your faultfinding.
Keep on making these repair videos. 🙂
GREAT VIDEO!!! Nice job Peter. Merry Christmas. 73s
Fantastic repair & approach there Peter.
Wow, they made you work really hard for this rig & so glad you were patient enough to resolve them all.
Appreciate all the easy to follow steps & learning so much watching your videos.
Been also recommending your videos to newbie & not so newbie hams & people interested in electronics who want to get a better idea about radio repair.
Wishing you & all your family a very merry Christmas, happy new year & all the very best for the festive season
Very merry Christmas!
Wow Peter that was an awesome feat of fault finding. I thought you were all done when the tantalum was changed but it wasn’t to be. Great job tracking multiple faults down. The owner will be pleased. Regards Graham
Hello Graham, yes that was my hope too, swapping out the tantalum and here it goes lol. On the other hand, it was fun pure. All the best 73 Peter
Chasing faults from one failure through 4 more is a fight well fought.
Fantastic, what an awesome detailed repair.
I love this kind of troubleshooting videos, I learn a lot from them. It also shows how important it is to have a good and complete set of testing equipment. Congrats with this fine diagnosis & repair job! Finally, the bottom line message is, that smoking is bad for babies (ref 0:37)... 73 de HA7RJA
lol yeah never let a bay smoke
Hi Peter. You certainly earned your money for this radio repair. Well done as usual, interesting video. Wishing you a very Happy Christmas and a Peaceful New Year to you and your family, hope to see many more videos in 2023! 73, Brian EI8EJB
Thanks Brian, happy Season holidays
Murphy: The probabillty of a failure of a component is invers to it´s accessibilty.
true
Hello Peter, it is allways a plesure to watch your videos.
This couple "different" problems of the Radio look to me from a near lightning hit.
All regulators are connectet togeter via gnd... even the capacitor witch was blown.
I hat allmost the same ott problems after a BIG lightning hit pretty close to my house.
The realy high tension came over the GND and produse the same faults in my equipment.
But with schematics and a litle luck i was able to help me out.🙃
Another excellent video and learning experience. Thank you and happy holidays.
Excellent video again, Peter!
Very good fault finding techniques.
@1:02:58 wow! I would have seen 2 diode drops and called that good. What a naughty transistor! Thx for the video!
yeah nasty fault..
Yay, Thanks Peter!
tolle videos - danke
Danke für das Lob!
Thanks again , surprised to see how a cascade failure went through --- what seems to me so many seperate areas ?
The spark while component failing did it
Hi Peter, Another interesting video. You notice that the faults are all to do with 14 volt supply which would suggest to me that the 14 Volt rail has spiked at some stage causing the tant, voltage regulator and various regulating circuits to fail. ICOM mains PSU’s are notoriously problematic. I would check the condition of the surge arrest circuits in the front end of the PSU along with the capacitors and the usual stuff as it may just do it again. Best Regards John
Thanks John, very good hint. I did not remember that this particular PSU was so problematic, but you are the ICOM specialist!
@@TRXLab Hi Peter thanks for getting back to me. To be honest at this vintage I don't think switched mode PSU's age that well generally. It’s an interesting failure, it may have been that the tant shorted and the PSU over shot the target voltage when the short condition cleared. Great video as always BTW I love all the fault diagnosis you really are a master at it. Hope all is well, very best regards John M0XFX
Great work peter 👌
ah yes those pesky tantalum capacitors....the fluke 8840a has the same problem :-)
The one radio I would love to see fixed is the Kenwood TS-440S. This radio suffers from the Sony Bond unlock problem I would love to see someone who knows what they are doing address this on this old but very nice radio.
Peter This was a very great video well explained and very professional. Very clear explanations you really one of the best on You Tube Love your videos and watching older ones very exciting to watch and learn. Very kind of you to share peter 73's de WB7QXU
Great stuff Peter!
What a great lesson. Thank you.
Thank you
Fantastic repair! 73s
Very good job Peter. One could almost assume that this device was specially prepared for you. Hidden Camera ;-) ?
Ich wünsche Dir ein frohes Fest!
73 de Bernd
LOL yeah where are the cameras ...Schöne Feiertage Bernd!
This looks very familiar to me, the time it took me to repair my transceiver when it was hit by lightning ,3 weeks
Tear drop Tantalum capacitor's, I don't know how many I have seen over the years that they short and burn like that. Some will emit so much smoke that you'll think something really bad has happened. I know designers use them for there low ESR rating but if it's in a not so critical circuit I've just replaced them with an equivalent electrolytic type.
I guess it will be anice repair. You got the 'like' just at beginning watching 😊 73
Danke :-)
If it smokes, take away its cigarettes! Love yer videos. From where are you? The Netherlands? You have the patience of a saint. W Rusty Lane K9POW in eastern Tennessee
Another great class !!!! Tnx!!!
Nice fix Peter.
Oh $#^&!... 😒 don't you just hate instant cascades of seemingly unrelated problems like that - all caused by a simple failure of one 20c component!
VERY nice job, Peter!
I must admit, you have some patience, I would have given up halfway through
I must have missed this video when it first came out but wow what an intense repair. As always Peter you have demonstrated your excellent diagnostic and repair skills. What was the total hours spent on this repair ?
I think that it might be old enough to smoke! M7GLO
off course, but as you can see, smoking kills
You can see why radios such as this are becoming unrepairable. Not that they can be repaired if the parts are available but the cost of bench time rapidly becomes more than the radio is worth.
That is truly an issue...
Wow, tag tantalum explosion madness.
exellent video.I have a ic781 that needs a retoration.Iwould like to know if you would be wiling to take on that other challenge
we are not working on restorations
@@TRXLabwhen he says restoration literally it is because of the age but in reality it is a repair that needs
How many hours did you spend altogether on this? I hope you received a fair compensation.
I find it stranges that so many faults was related to supply voltages. Does this radio suffer from a voltage spike?
don't think so
5 problems but presumably it was working before it smoked. One common denominator is the 14 volt supply. Is it possible that either an operator error or a momentary power glitch could have caused all of these to fail at once? A momentary high voltage on 14 is one possibility. The 16 V cap failed taking the inductor. The regulator failed also which could have been overvoltage transient. Hardest to explain is the driver transistor for the TX switch. W5PZT
The momentary glitch was the Tant shorting out. They are well known for this. I think that event might have caused a transient on the 13.8V supply regulation that contributed to the other failures.
Thats sad thats an awesome radio💯😩
no not sad radio is as new :-)
@@TRXLab thats always a great thing another classic saved👍💯
Woodbines or Embassy?
Smokes because it is a hot radio.
I have the same radiostation icom 765 and its not working,i cant to start the station,when i pres start butom
nothing hapends, can yuo tel me ehat to do,what to check?
It looks like a power surge maybe a lightning strike on the antenna? Not many tecnician would have been able to repair it ( me neither) Kudos
Thank you very much appreciated!
A question: between this one, or yeasu ft 990 or yeasu ft 1000. Wich one should I choose and why?
Is this one tantalum cap reason for destroying all what you fixed?
I don't think so. The radio is simply suffering from aging...