Great repair again. I am amazed by your skills. The way you explain things and your logical approach to the problems are outstanding. Well done sir. 73’s Lynton.
Awesome Peter, So small these ic's. I enjoyed when you fixed the radio," your happy voice came on"! Thanks you for showing how you came about diagnosing the problem with the different voltage.
What a superb video. Beautifully shot. Excellent presentation. Clear and precise walk through of the tracing, detection and repair of the fault and the logic employed to do so. A tiny bit of frustration that the most critical part -- removal and replacing of the tiny parts involved -- could not be filmed but that was entirely understandable in the circumstances. All in all, a fantastic piece of work, explanation and lighting/filming and all done by someone using English as a second language. Brilliant.
Nicely done! Very thorough. I was able to implement your solution to the icom 735 encoder with the help of the diagram you sent. It seems I am learning a lot from you.
+Alan Cordwell Hi Alan, yes you are right I also recognised it on the video but it was not there in the lab. I wonder where it comes from?? Thanks for watching buddy!
+Irishman1127 Hi George, hey come on you are a fantastic radio technician! Great custom radios comes from your bench!!! Thanks for nice feed back, glad that you like my vids! 73's
would have enjoyed it more if we had seen the unsoldering and replacement with new part i can't imagine working with such small components myself so maybe in a future video you could cover the whole process
+iron man Hi, I totally agree with you but this work needs to be done under the microscope and that doesn't work with the camera. But be assured we are working on a solution to do it better in the future. 73's
I was wondering if you checked the voltage at pin 6 of the new amp chip? I suppose the bypass cap also could have failed and dragged down the voltage. Turned out the amp chip was the problem. Interesting how the huge signal did not blow out the pre-amp transistor! One would have though that would be the first to go!
Would it be worth obtaining or making suitable tips for your hot tweezers so that you can remove tightly packed parts such as small ics or transistors without the hot air gun?
Just so you know, I have actually monitored heat soak through to the opposite side of a PCB and even when one side is thoroughly heated (such as with extended IR preheating an entire side) the opposite side is pretty reliably 20-40C cooler than the heated side. So, if you raise your component to the necessary temperature for desoldering the component you should ordinarily still be very safely below the melt point on the opposite side. The notable exceptions would be boards with very heavy nearby via stitching (such as high current and some microwave boards) or metal core circuit boards (such as those used with high power LEDs or transistors where the heat must pass through the PCB to a heatsink on the opposite side). However, when you need to secure SMD components to ensure they can not be knocked loose, silicon adhesive Kapton tape will serve one well as it is unaffected by typical soldering temperatures and will not cause any damage (it releases cleanly and easily).
Great video Peter, as always! Interesting though that Icom don't distribute semiconductors in ESD shielded bags? Before you removed the amplifier you could hear some noise at the injected signal. Just as you can hear from a stressed amplifier, that was my clue. ;) But again, nice explained and well gone through. I lift my hat off!
Hi Peter, Super Video, bei mir war der VHF Q552 (3SK291) defekt, leider war nur ein Äquivalent mit gespiegelten Beinchen zu bekommen. Da dieser unter der LP ist, mußte ich den TRX auseinander nehmen und den FET kopfüber einlöten und die Beinchen verlängern. Sehr defiziel. An die UHF-Seite kommt man ja noch gut ran. 73 DL1RNO
+Jurij Hinze Hallo Jurij, oh gab es den Originaltyp nicht mehr bei ICOM?? Das ist wirklich komisch. Ja wenn der kopfüber eingebaut werden muss ist das wirklich ein Problen. Na ja wenn das Gerät wieder funktioniert ist ja alles okay. Vielen Dank für Deinen Kommentar und Deine Rückmeldung! beste 73 Peter
Hi Peter sorry what i mean is the frequency on receive on 2mts and 70cms is 3 khz out on receive, but hf seems ok, is there a pot adjustment or something to realign it from Fred.
Hi Peter i am a bit desperate i need to know how to set the rx frequency on 2/70 on an IC 7000 can you help, sorry for asking questions hi...Fred in UK.
good morning friend peter you would not have the eeprom data from ic7000 my radio has corrupted the data now I'm grateful for your attention for 73 do antonio brasil
Hallo, das ist dann Deine Entscheidung und auch gut, ich wollte Dich wirklich nur aufmerksam machen, denn es wäre Schade, wenn Menschen wie Stefan Raab Dich verunglimpften denn Du hast echt was drauf!! Lieben Gruß Hermann
+Hermann Kovert Hallo Hermann, alles okay ich habe kein Problem mit Kritik. Trotzdem muss ich Entscheidungen treffen, genau das habe ich getan. Vielen Dank für Deine positve Beurteilung meiner fachlichen Qualitäten. Viele Grüße
Hallo, Deine Videos sind ganz große Klasse, wirklich "Great Craftmanship" aber Dein Englisch ist echt zum fürchten, ich würde mir wünschen, Du würdest die Videos auch auf Deutsch machen. Well sorry for the complain, but do yourself a favor and try to impove your english, please, not for me just for yourself. Ich hoffe, Du verstehst das jetzt richtig. Lieben Gruß Hermann
+Hermann Kovert Hallo Hermman, verstehe Deine Intension, aber auch wenn mein Englisch echt zum fürchten ist, werde ich es so beibehalten, da ca. 85% meiner Abos aus dem nicht deutschprachigen Raum sind. Wenn ich also nur noch in Deutsch diese Videos machen würde, würde ich meinen internationalen Zuhörern vor den Kopf stoßen. Da dies eh schon ein Spartenkanal ist wäre das keine gute Idee. Leider bin ich auch nicht in der Lage beides zu machen oder mit Untertiteln zu arbeiten, da ich leider dafür keine Zeit habe. Hoffe das du dafür Verständnis aufbringen kannst. Trotzdem danke für deinen Kommentar. Viele Grüße
so much talking no enough physical diagnostics. talk wile you work with tools in hand. i hate flow carts. flow carts just like i used when working on cars. i truly hate flow carts, not fully drawn out schematics. i'm just a hands on person. i pick up on what's gong on. it's like being talked down to otherwise. it's me, not you. in other words; a chalk board is boring. and spending time over it. i had a hard time staying awake.
Ha Ha Ha yet again getting the credit for someone else soldering work. You're not pulling the wool over my eyes. So you can't solder on camera but can do everything else perfectly fine on cam lol. Thing is why not, you have both hands free to do the job and not have to hold the camera in place while doing the work. Great job though to the original person who replaced the components. Really is a shame that certain individuals cant give the credit when its due but take it all for themselves. Absolutely disgusting and disrespectful.
I am not a radio person but I can watch you repair radios all day
Thank you for all your kind comments! I have read them all but can't answer to all! Glad that you like my videos...Cheers
:)
Great repair again. I am amazed by your skills. The way you explain things and your logical approach to the problems are outstanding. Well done sir. 73’s Lynton.
Awesome Peter, So small these ic's. I enjoyed when you fixed the radio," your happy voice came on"! Thanks you for showing how you came about diagnosing the problem with the different voltage.
+Dennis Peake Hi Dennis, thanks for nice feed-back!
Good repair job Peter.
I all ways love to watch these repair videos.
+Grant Fullen Hi Grant, glad that you like it! Thank you!
What a superb video. Beautifully shot. Excellent presentation. Clear and precise walk through of the tracing, detection and repair of the fault and the logic employed to do so. A tiny bit of frustration that the most critical part -- removal and replacing of the tiny parts involved -- could not be filmed but that was entirely understandable in the circumstances. All in all, a fantastic piece of work, explanation and lighting/filming and all done by someone using English as a second language. Brilliant.
+InTheNameOfJustice Thanks you very much for the kind words and for stopping by.
TRXBench
I just wish microscopes had a way of projecting what they see through cameras. Maybe one day.
+InTheNameOfJustice I'm working on that as well but will still take a while
TRXBench
Really? I was expressing a wish I had no idea it was possible. Something to look forwards too I guess. Thanks.
Another successful repair Peter, good job done.
+Paul Collins Thank you Paul!
Nicely done and you showed a very clear thought process. Great job! Greetings from Arizona.
+Thema inproblem Hi Michael, thanks for nice feed-back! 73
yet another entertaining and informative video Peter. keep up the good work. Karl .
+Karl Fell Hi Karl, thank you, always glad that you like it :-)
I have just recently found your channel, and watched many of your videos. Special thanks for making them in english. Very nice. 73's
+worroSfOretsevraH Thank you for the kind words. Hop you can endure my English 73's
Nicely done! Very thorough. I was able to implement your solution to the icom 735 encoder with the help of the diagram you sent. It seems I am learning a lot from you.
+zepplinc20 Hey, great news that you was able to fix your 735!! Thanks for your comment and thanks for stopping by! 73's
Thanks for another fantastic video. Please keep them coming.
+rupert handford Hi Rupert, thanks for feed back!
Good Job Peter! Those pesky little IC's :^) That red glue is a pain as well.
+Mr Carlson's Lab Hi Paul, thank you! Yes the red glue is really a pain. Take care my friend!
very good job Peter! Your explanation is very light and didactic. 73's from Brasil!!
Glad that you liked it! Thanks for watching 73 to Brasil!
You did a great repair
thanks for taking time to video
Have a great day Peter
+DENNIS N Hi Dennis, thanks for comment !!
Another great repair video. Thanks Peter!
+The Radio Shop Hi, thanks for feed back!
Another little tricky problem well done to get it sorted out it must have been a power surge which damaged that little IC
eah that is a tricky little problem :^) 73
A really great diagnostic and repair video. excellent presentation !!!!!!!!!!!!!!!!!!!!!!!!
+Satellite_Guy Hi Satellite Guy my friend, thank you very much!! Take care!
Nice repair. Thanks Peter.
+Robert Calk Jr. Hi Robert, thank you !!
Very nicely done Peter. The radio sounds like it has a very slight 'birdie' on that frequency. I would still very much like one though!
+Alan Cordwell Hi Alan, yes you are right I also recognised it on the video but it was not there in the lab. I wonder where it comes from?? Thanks for watching buddy!
Very nice Job Peter!!! 73's from Brazil.
+Yvo Muniz (ALPHA TELECOM) Hey Yvo, thanks mate! 73's
Hi Peter. Great video. I'd love to be able to fault find at your level. Maybe some day. Lol. Great video. Keep them coming.
George
+Irishman1127 Hi George, hey come on you are a fantastic radio technician! Great custom radios comes from your bench!!! Thanks for nice feed back, glad that you like my vids! 73's
Great repair as usual Peter, thanks for sharing (you've convinced me to finally invest in a good microscope!). 73 - Dino KL0S
+Dino Papas Hi Dino, thanks for feed back. Well yes work like this is not to manage without a good microscope.....
would have enjoyed it more if we had seen the unsoldering and replacement with new part i can't imagine working with such small components myself so maybe in a future video you could cover the whole process
+iron man Hi, I totally agree with you but this work needs to be done under the microscope and that doesn't work with the camera. But be assured we are working on a solution to do it better in the future. 73's
Mr. Carlson is a spectacular troubleshooter as well.
+Thema inproblem Yes of course my friend Paul is spectacular excellent !!
I was wondering if you checked the voltage at pin 6 of the new amp chip? I suppose the bypass cap also could have failed and dragged down the voltage. Turned out the amp chip was the problem. Interesting how the huge signal did not blow out the pre-amp transistor! One would have though that would be the first to go!
Would it be worth obtaining or making suitable tips for your hot tweezers so that you can remove tightly packed parts such as small ics or transistors without the hot air gun?
Just so you know, I have actually monitored heat soak through to the opposite side of a PCB and even when one side is thoroughly heated (such as with extended IR preheating an entire side) the opposite side is pretty reliably 20-40C cooler than the heated side. So, if you raise your component to the necessary temperature for desoldering the component you should ordinarily still be very safely below the melt point on the opposite side. The notable exceptions would be boards with very heavy nearby via stitching (such as high current and some microwave boards) or metal core circuit boards (such as those used with high power LEDs or transistors where the heat must pass through the PCB to a heatsink on the opposite side). However, when you need to secure SMD components to ensure they can not be knocked loose, silicon adhesive Kapton tape will serve one well as it is unaffected by typical soldering temperatures and will not cause any damage (it releases cleanly and easily).
+Ethan Poole Hi Ethan, thanks for your valuable information which is not only a great help for me but also for the community! Thanks for stopping by!
Outstanding demo of repair process! Thank you.
Perhaps the red glue helped keep the parts on the other side of the board from falling off?
+OregonOrcadian Thanks for feed back! 73
Tnx Peter. Great as usually. 73s de IW0HEX Pasquale.
+Pasquale IW0HEX Hi Pasquale, thanks for commenting! Great to have you here mate. 73's
Thanks for another Great!! repair video
+bob smith Hi Bob, thanks for stopping by!
Well done! Great Video, Thank You
+knunne1 Hi, thanks you! 73
Peter
What did you recommend to remove the red glue from the board safely please.
73s
KB3YXS
Hi Peter very good, i have two of these radios, fortainatly they are working ok...Fred in england.
+Tom Smith Hi Fred, glad that you like it and thanks for comment!
Great video Peter, as always!
Interesting though that Icom don't distribute semiconductors in ESD shielded bags?
Before you removed the amplifier you could hear some noise at the injected signal. Just as you can hear from a stressed amplifier, that was my clue. ;)
But again, nice explained and well gone through.
I lift my hat off!
+Mikael Karlsson Thanks for the kind words Michael! All the best and 73
Excellent
Hi Peter, Super Video,
bei mir war der VHF Q552 (3SK291) defekt, leider war nur ein Äquivalent mit gespiegelten Beinchen zu
bekommen. Da dieser unter der LP ist, mußte ich den TRX auseinander nehmen und den FET kopfüber einlöten und die Beinchen verlängern. Sehr defiziel. An die UHF-Seite kommt man ja noch gut ran.
73 DL1RNO
+Jurij Hinze Hallo Jurij, oh gab es den Originaltyp nicht mehr bei ICOM?? Das ist wirklich komisch. Ja wenn der kopfüber eingebaut werden muss ist das wirklich ein Problen. Na ja wenn das Gerät wieder funktioniert ist ja alles okay. Vielen Dank für Deinen Kommentar und Deine Rückmeldung! beste 73 Peter
Thanks for sharing great job
+wade hicks Thanks for comment and watching!
Interesting, thanks for sharing :)
+Yann Kitson Hi Yann, thanks for stopping by!
Hi Peter sorry what i mean is the frequency on receive on 2mts and 70cms is 3 khz out on receive, but hf seems ok, is there a pot adjustment or something to realign it from Fred.
Hi Fred that means most likely your master crystal need a new alignment. You will find procedure in the service manual...Hope that helps 73
Ok Peter thanks....Fred.
please help icom ic-7400 TX and RX and PLL / VCO problematic
Hi Peter i am a bit desperate i need to know how to set the rx frequency on 2/70 on an IC 7000 can you help, sorry for asking questions hi...Fred in UK.
Hi Fred, not sure what you mean I mean you can simply dial it in but I believe you are thinking on something different, right?
good morning friend peter you would not have the eeprom data from ic7000 my radio has corrupted the data now I'm grateful for your attention for 73 do antonio brasil
good Repair.
like it.
73
+hussain alonzi Hi Hussain, thanks for comment! 73's
What tool was he using to probe the RF 31:40
+Travi5 Hi, I'm not probing I'm injecting a signal into the signal path. 73
good job Peter grtz rik (y)
Thanks Rik! 73
Peter, is this the same "problem" IC-7000 ?
the same IC-7000? I don't think so
73's de K8MB
Hallo,
das ist dann Deine Entscheidung und auch gut, ich wollte Dich wirklich nur aufmerksam machen, denn es wäre Schade, wenn Menschen wie Stefan Raab Dich verunglimpften denn Du hast echt was drauf!!
Lieben Gruß
Hermann
+Hermann Kovert Hallo Hermann, alles okay ich habe kein Problem mit Kritik. Trotzdem muss ich Entscheidungen treffen, genau das habe ich getan. Vielen Dank für Deine positve Beurteilung meiner fachlichen Qualitäten. Viele Grüße
how can we contact you for radio repair?
Hi send a e-mail at FBLab@gmx.de 73
Amplifier BREMI BRL 40 - 70 about plz sir
sorry I don't know what you mean??
Ok Peter thanks.....Fred g4vvq
Hallo,
Deine Videos sind ganz große Klasse, wirklich "Great Craftmanship" aber Dein Englisch ist echt zum fürchten, ich würde mir wünschen, Du würdest die Videos auch auf Deutsch machen.
Well sorry for the complain, but do yourself a favor and try to impove your english, please, not for me just for yourself.
Ich hoffe, Du verstehst das jetzt richtig.
Lieben Gruß
Hermann
+Hermann Kovert Hallo Hermman, verstehe Deine Intension, aber auch wenn mein Englisch echt zum fürchten ist, werde ich es so beibehalten, da ca. 85% meiner Abos aus dem nicht deutschprachigen Raum sind. Wenn ich also nur noch in Deutsch diese Videos machen würde, würde ich meinen internationalen Zuhörern vor den Kopf stoßen. Da dies eh schon ein Spartenkanal ist wäre das keine gute Idee. Leider bin ich auch nicht in der Lage beides zu machen oder mit Untertiteln zu arbeiten, da ich leider dafür keine Zeit habe. Hoffe das du dafür Verständnis aufbringen kannst.
Trotzdem danke für deinen Kommentar.
Viele Grüße
sounds as if you need to start using a rf prove and stop yakking.
+dale myers Hi Dale, I don't know what you mean..sorry
so much talking no enough physical diagnostics. talk wile you work with tools in hand. i hate flow carts. flow carts just like i used when working on cars. i truly hate flow carts, not fully drawn out schematics. i'm just a hands on person. i pick up on what's gong on. it's like being talked down to otherwise. it's me, not you. in other words; a chalk board is boring. and spending time over it. i had a hard time staying awake.
Ha Ha Ha yet again getting the credit for someone else soldering work. You're not pulling the wool over my eyes. So you can't solder on camera but can do everything else perfectly fine on cam lol. Thing is why not, you have both hands free to do the job and not have to hold the camera in place while doing the work. Great job though to the original person who replaced the components. Really is a shame that certain individuals cant give the credit when its due but take it all for themselves. Absolutely disgusting and disrespectful.