Excellent video on how to properly trouble-shoot a faulty radio! There is always a temptation to cut corners and go at it in a rapid, disorganized fashion, but using logic, patience, and a clear schematic is really the best way. Best 73s from VE1FA
Very helpful videos, I am currently in the middle of the brazilian amazon and already repaired 6 radios, 3 Vx-1700 and 3 FT-600, thanks a lot, you helped 6 villages to get access to health services!
Nice job explaining the process of troubleshooting step by step. I know many techs that would have skipped over looking into the basics like bad solder joints and connections.
I really enjoyed this video!! I think the rest of the regular guys here like it too. Thanks for the excellent example of diagnosis, where lucky for the owner it was just another of those pesky cold solder joints we electronic techs find so often. Another big thumbs up, and thanks so much for this terrific educational contribution !!!!!
Satellite_Guy Yeah it was good news for the owning contest station. So much gear to take care on. And always problems with radios after heavy contest operation. I'm glad that you like the video, thanks for your feed back.
Kevin Gray Hi Kevin, yea it looks easy but sometime it is really hard because all the preparatory work to fully understand the schematic in order to troubleshoot it makes the difference. Glad that you like it Thanks.
Great job, shows how following correct order of troubleshooting and diagnosing can save time over just assuming what the cause of the problem is. As you stated, many would assume a problem in the power amplifier itself.
You diagnosed the cause of the problem very efficiently. You have my admiration. (By the way, I wish that I could speak German even half as well as you speak English.) Best regards.
One of the reliable tests of old radio men is to bang the thing on the table while powered up ! Mechanical intermittent faults are a REAL possibility.. which might have revealed itself in that kind of preliminary test. Of course, until it has failed , it nearly impossible to do the rigorous trouble shooting you have seen here to isolate the problem. Always a treat to follow along with this great radio tech. w6wuh
I very much enjoyed watchin the methodical way you went through each stage to find the problem, explaining each step. Very good instructional video.. thank you very much!
Great video yet another Radio I have only had one problem with my FT 1000 mkV witch was the VRF/'MEM ch switch went tits up but apart from that keep up the videos Now I have you and Mr Carlson Lab I won't get lost or stuck in finding problems Sam
Very well done and informative. My only complaint is you seem to talk a bit longer than need be and draw out the length of the video unnecessarily, but the final result is a working radio, and of course that is want we all want to see.
Randy Behrmann Thanks for your feed back! You may be right, I'm always trying to do it as easy as possible for beginners. That might be boring for more experienced viewers...Hope it is not to hard to watch. Thanks again!
thanks for sharing the video, thanks to your explanation I managed to repair my FT920 who complained of the same defect, the pattern will change slightly, but in the end and the essential foundation that counts. Thank you very much 73 de IU8GTA
TRXBench Hi Peter. Another test to do before is to check the current (A). In your case there was no bias on pre-driver, drivers and finals so the current it would has been very low. I know the bias about 10-15% (approximately) for the maximum current (about 20 Ampere for HF radio with 100 watt output power). In your case was a great way to understand that the PA didn't work. Best 73s.
Peter really enjoyed that fault finding video just shows what missing voltage can do, you wonder when these radios are made would they be bench tested maybe 1 in every 1000 is the test and this has been a faulty one? very good peter :)
Hi there again Peter. ("Deduction my dear Watson.") Sherlock would have said ,or something like that .Hi Hi. I laughed reading the comment from Capt. Larry re old radiomen giving the radio a bang to find a intermittent fault. That reminds me of some years ago in our units Tech workshop when a regimental signaler brought in a faulty psu for a C45 radio. He stated that the thing would not switch on. One of our technicians took hold of the offending psu and bounced it onto a thick rubber mat on the ground.(That's why the radio equipment had to be soldier proof). Connected the psu to a radio at hand, plugged it into a test antenna, switched on and hay presto it worked.The signaler left the workshop with his tail between his legs so to speak and was told "Next time give the F--ing thing a kick with the sole of your boot on the front protection bar. That was the typical first i.a. to sort out the usual none working vibratore installed psu's for the "Larkspur" C range of sets. They were changed to transistorised units in the mid 60's. Thank God. Well done on the repair video Peter. Well explained for anyone having to do the same repair to their equipment. Keep up the good work as always. 73 de John - G0WXU.
Love your videos. I've learned a lot. I have a 1000MP (non mark V) with no power out. It goes into transmit mode, but no power out. This has been an intermittent problem over the last few months, but now it's consistent no power out. Following your video I discovered that voltage to the final stage drops from 13.7 down to about 12 when pushing PTT. Any thoughts on what to check next?
Hi TRX Lab I have same defect on my FT-1000MP I saw this video and when I come back from my Holiday I try to investigate because my radio doesn't switch in TX Into the video I noticed that you have used a three way connector: in one of these is connected radio in the second a dummy load an in the third a bnc that is connected to a millivoltmeter and next to a frequency counter. Where I can find this three way connector. what is the exactly model. Thanks in advance for your support. Riccardo (IU2OFF), Milano Italy
Love the video. Super informative. I am having an issue with my FT 920 and was wondering if you could help. Is there a way to contact you? Thanks a lot.
***** Hi, you can contact me over the TH-cam internal message system. When you are on my youtube side go to "channel info" >>>> write message.... that's it..73
+Mr Carlson's Lab +TRXBench Why do you guys think radios at $1K+ level don't incorporate feedback circuits for automatic failure analysis (e.g. autos and many other current electronics)? I'm a believer that with processors the rig should be doing the work to tell you right away what's wrong.
I have received an transmit but I don't think it has output I just spent £450 as I Don have a lot more to spend as my income is low please can you help
Hello, Thanks for this famous video which teach me a lot of things. Howevere I have a question, what can be the reason on this rig if the rf power decrease when I increase the frequency. Thanks in advance if somebody can help. F4IUC
Excellent video on how to properly trouble-shoot a faulty radio! There is always a temptation to cut corners and go at it in a rapid, disorganized fashion, but using logic, patience, and a clear schematic is really the best way. Best 73s from VE1FA
Very helpful videos, I am currently in the middle of the brazilian amazon and already repaired 6 radios,
3 Vx-1700 and 3 FT-600, thanks a lot, you helped 6 villages to get access to health services!
Thank you for that Feed back. Happy to be of any help. Cheers and all the best.
I always look forward to your repair videos my friend. Explained very well and in-depth to help others. Thank you.
John
***** Thanks John, glad that you like it!
All that work for such a simple fault! Well done young man. 73’s Lynton
I really like this peter. when you make something better than when it was brand new, maybe 20 years ago, that is so good. it makes me feel good.
Thanks for comment 73
Nice job explaining the process of troubleshooting step by step. I know many techs that would have skipped over looking into the basics like bad solder joints and connections.
Steve Barden Hi Steve, although bad solder points happens very often....Thanks for feed-back!
I really enjoyed this video!! I think the rest of the regular guys here like it too. Thanks for the excellent example of diagnosis, where lucky for the owner it was just another of those pesky cold solder joints we electronic techs find so often. Another big thumbs up, and thanks so much for this terrific educational contribution !!!!!
Satellite_Guy Yeah it was good news for the owning contest station. So much gear to take care on. And always problems with radios after heavy contest operation. I'm glad that you like the video, thanks for your feed back.
Your repair videos are excellent. Thanks so much for your effort. You make repairs look so easy. Watch all your videos
Kevin Gray Hi Kevin, yea it looks easy but sometime it is really hard because all the preparatory work to fully understand the schematic in order to troubleshoot it makes the difference. Glad that you like it Thanks.
I love your consistent systematic approach
Michael Katt Hi Michael, well it is only self protection to get not lost on the journey. Thanks for feed back.
Great job, shows how following correct order of troubleshooting and diagnosing can save time over just assuming what the cause of the problem is. As you stated, many would assume a problem in the power amplifier itself.
Mark Arruda Hi Mark, yeah a clear troubleshooting procedure is very helpful. Thanks for feed-back and watching my videos!
You diagnosed the cause of the problem very efficiently. You have my admiration. (By the way, I wish that I could speak German even half as well as you speak English.) Best regards.
One of the reliable tests of old radio men is to bang the thing on the table while powered up ! Mechanical intermittent faults are a REAL possibility.. which might have revealed itself in that kind of preliminary test. Of course, until it has failed , it nearly impossible to do the rigorous trouble shooting you have seen here to isolate the problem. Always a treat to follow along with this great radio tech. w6wuh
Great troubleshoot and repair video on the revolutionary transceiver made by Yeasu
Thanks for watching
This is much better than watching the TV. Very interesting.
saxon12qa Hi, thanks for nice feed-back 73 Peter
I very much enjoyed watchin the methodical way you went through each stage to find the problem, explaining each step. Very good instructional video.. thank you very much!
+Michelle Pucca Hi Michelle, thanks for stopping by and nice comment! 73
Great video yet another Radio I have only had one problem with my FT 1000 mkV witch was the VRF/'MEM ch switch went tits up but apart from that keep up the videos
Now I have you and Mr Carlson Lab I won't get lost or stuck in finding problems
Sam
Sam W Hi Sam LOL yes Mr. Carlson is a fantstic tech. Thanks for feed-back 73
Loved the trouble shooting and repair.
Great video on a super radio.
Jim Mac Thanks for feed back Jim, glad that you like it.
Excellent Troubleshooting de DV7NIB
Wow Peter. Beautiful radio and video. Thanks
Very well done and informative. My only complaint is you seem to talk a bit longer than need be and draw out the length of the video unnecessarily, but the final result is a working radio, and of course that is want we all want to see.
Randy Behrmann Thanks for your feed back! You may be right, I'm always trying to do it as easy as possible for beginners. That might be boring for more experienced viewers...Hope it is not to hard to watch. Thanks again!
TRXBench
It always takes longer to explain the repair than to actually do the repair. But the logical process is the important part. Good work.
Brad G
Hi Brad, that is exactly the point! Thanks for comment 73
Another super video well worked out and very well explained. Thank u
Gary g1fsh Thanks Gary, I'm glad that you like it
thanks for sharing the video, thanks to your explanation I managed to repair my FT920 who complained of the same defect, the pattern will change slightly, but in the end and the essential foundation that counts.
Thank you very much
73 de IU8GTA
Hi Alexandr, thanks for watching, glad that you like it. 73
Excellent troubleshooting and repair..
Bud...
budleyca1 Thanks Bud!
Good job my friend!
***** Hey Yvo, thanks mate :-)
TRXBench plz do u can send me your mail becauze i need you help in one issue
mike fajloun Hi
My e-mail is: yvo.alpha@hotmail.com
73's
Great as usually. At the beginning I would have check also monitor to see IF stage works. Thanks
Pasquale IW0HEX Hi Pasquale, yes you are absolutely right. That is a helpful step, without opening the radio. Thanks for comment! 73
TRXBench Hi Peter. Another test to do before is to check the current (A). In your case there was no bias on pre-driver, drivers and finals so the current it would has been very low. I know the bias about 10-15% (approximately) for the maximum current (about 20 Ampere for HF radio with 100 watt output power). In your case was a great way to understand that the PA didn't work. Best 73s.
Peter really enjoyed that fault finding video just shows what missing voltage can do, you wonder when these radios are made would they be bench tested maybe 1 in every 1000 is the test and this has been a faulty one? very good peter :)
Hi there again Peter. ("Deduction my dear Watson.") Sherlock would have said ,or something like that .Hi Hi. I laughed reading the comment from Capt. Larry re old radiomen giving the radio a bang to find a intermittent fault. That reminds me of some years ago in our units Tech workshop when a regimental signaler brought in a faulty psu for a C45 radio. He stated that the thing would not switch on. One of our technicians took hold of the offending psu and bounced it onto a thick rubber mat on the ground.(That's why the radio equipment had to be soldier proof). Connected the psu to a radio at hand, plugged it into a test antenna, switched on and hay presto it worked.The signaler left the workshop with his tail between his legs so to speak and was told "Next time give the F--ing thing a kick with the sole of your boot on the front protection bar. That was the typical first i.a. to sort out the usual none working vibratore installed psu's for the "Larkspur" C range of sets. They were changed to transistorised units in the mid 60's. Thank God. Well done on the repair video Peter. Well explained for anyone having to do the same repair to their equipment. Keep up the good work as always. 73 de John - G0WXU.
LOL very nice story John....thanks for sharing !73
Very informative! That is a nice-looking rig!
Bill Wolverton Thanks for Feed-back. 73
GREAT TROUBLE SHOOTING ! BAD SOLDER CONNECTION !!!
Thanks for stepping by Joe 73
I really enjoyed this video and very good work...Fantastic
***** Thanks for Feed-back. 73
I have one of these radios, well it's the MP. They are very nice...
Yes great radios 73
i have one of these and some day will need to fix very well done de wb8idy
good luck with the project...
very good work, nice tracing... :)
olakarab Thanks for feed back! Great that you like it 73's
Love your videos. I've learned a lot. I have a 1000MP (non mark V) with no power out. It goes into transmit mode, but no power out. This has been an intermittent problem over the last few months, but now it's consistent no power out. Following your video I discovered that voltage to the final stage drops from 13.7 down to about 12 when pushing PTT. Any thoughts on what to check next?
Really god job. Problem is big but solitions s very simple :) Thanks
+Emin Bora Demirel Hi Emin, yes that is true. Thanks for stopping by 73
The man is a genius.
Barnekkid Hi there, thanks for the nice feed-back..
good videos great shots thank you for sharing
***** Glad that you like it Dennis Thanks
Thanks for another great video.
Chrysiotis Thanks for watching !
Excellent video.
Great video. Thanks for sharing
bob smith Hi Bob, thanks for feed-back!
good work. i have a 1000MP V Field. the band switching works from 1.8 to 14megs will not work from 14 to 29 could you help me?
white wire is the negative/ground and the red wire is your transmit control...thanks
Hi TRX Lab I have same defect on my FT-1000MP I saw this video and when I come back from my Holiday I try to investigate because my radio doesn't switch in TX
Into the video I noticed that you have used a three way connector: in one of these is connected radio in the second a dummy load an in the third a bnc that is connected to a millivoltmeter and next to a frequency counter. Where I can find this three way connector. what is the exactly model. Thanks in advance for your support. Riccardo (IU2OFF), Milano Italy
Thanks, great video.
Thank you Colm 73
Love the video. Super informative. I am having an issue with my FT 920 and was wondering if you could help. Is there a way to contact you? Thanks a lot.
***** Hi, you can contact me over the TH-cam internal message system. When you are on my youtube side go to "channel info" >>>> write message.... that's it..73
Thank you peter
That little blue transverter switch is a silly idea on Yaesu's part, Isnt it! Wink Wink :^)
Mr Carlson's Lab HaHa, yes you are right and and contact problems at the switch as well know it from earlier repairs. Silly idea .
TRXBench Keep up the good work! I enjoy your videos.
enjoy your videos do you work on radios for the public need to have a few things done
Joseph Jones Hi Joseph, thanks for your comment! Well the radio community is huge, so it is never boring.
+Mr Carlson's Lab +TRXBench
Why do you guys think radios at $1K+ level don't incorporate feedback circuits for automatic failure analysis (e.g. autos and many other current electronics)? I'm a believer that with processors the rig should be doing the work to tell you right away what's wrong.
wow excellent educational vid
alessio'r roadies Thanks for the feed-Back!
hello my Yaesu FT-1000MP Mark V Field displays a high SWR, please help thank Marek
+Marek 2os073 New York Hi, sorry but that is not possible on distance. Radio must be on the bench. 73
Muy buen trabajo LU9EWO 73
Jorge Moretti Thanks for feed back!
I have received an transmit but I don't think it has output I just spent £450 as I Don have a lot more to spend as my income is low please can you help
👍
beautifull video !!! big thumb :-) my radio no power on 160m-70m and only 10 watts on 20m rest is 100w :-( ???
+Alain van dale Hi Alain, thanks for nice fed-back! best 73
thumbs up
Hello, Thanks for this famous video which teach me a lot of things. Howevere I have a question, what can be the reason on this rig if the rf power decrease when I increase the frequency. Thanks in advance if somebody can help. F4IUC
great work, please send the radio to my address.
;)
ᗒ╬ᗕ1112223333111ᗒ╬ᗕ HaHa, okay need your address ;-) Thanks for feed-back