There are 2 optical chopper wheels inside, one stationary and the other on the shaft. The FT757GX used the same one. I had one that came out of a 757GXII that the shaft seized but some oil freed it up. Of course I took it apart to see what was inside :-) It sure looks like shaft wear over the aproximate 32 years took its toll. The LEDS was a good move Peter. I had a 757GX that I was inside of for many years :-) Very nice that you found a suitable replacement for the 767GX. I still have the FP-757HD power supply, a very nice one I might ad that has a slow on unlike the Astrons, maybe .25 seconds from 0 to full voltage. I use it to run my Ic706mk2g now.
Great repair Peter. The original encoder looks like it had plenty of use over the years. Good to see there is replacement parts for this still out there. Thanks for sharing. 73
I think rotary encoders may fail more often than we think...I had to replace the encoder on my TenTec RX-340 receiver not too many years after I got it; fortunately TT was still in business at that time and the new one was relatively inexpensive....almost wish I'd bought two as a "just in case"! TNX for sharing Peter. 73 - Dino KL0S
You are right Dino we have to replace all kind of encoders very often especially the early versions. I'm curious how the modern versions will turn out...Thanks for watching 73
there was a mod concerning the freq not holding. the batteries were wearing out too quickly so they added a shottkey diode in the cct. of course, the back up switch may have been switched off (next to the switch you squirted) in the first place. I have replaced my battery several times so now have extended it into one of my vacant module bays to make the replacement easier as taking this radio apart is a real nause!
Nice, Peter! I have a 767 on my own, i love that beast, it is still in nice condition, including the 2m module. Yes, it is old. but i personally think it is worth keeping it. Best 73!
Nice to see you back, and giving us another fine video from the TRX Bench. Peter please tell me you put some heat shrink on the leads of that encoder. It's great to see these good old girls get a tune-up not a throw out. And looking back at all the work it must of took to assemble this radio as compared to today rigs is incredible. Anyway's Anywho's Anyhow look forward to your next. Cheers 73
Nice work Peter, thanks. It seems like they would have provided a connector for the encoder so you wouldn't have to solder the wires directly to the pins.
Sorry I know I asked this before but you didn't reply. I'd really like to know about the encoder shaft? Was the new one long enough or did you have to modify it? I've seen people swap the encoder before but they needed to extend the shaft making the job a bit of a pain in the butt. So was the one you bought as long as the original or did you do something to make the VFO knob stay on? I'm really interested to know... Thanks, Great Video as always.
Great video. What Bourne part number did you use? I want to make sure I get the same length shaft, but I Would prefer a little slower pulse rate per revolution. Not sure if 100 would work well but 256 looks touchy in the video to me.
Great job as always, question, was the original encoder not repairable? It seem to be a mechanical failure like a worn shaft bushing as oppose to an electrical failure. Just curious, again nice job and thanks for sharing.
I get myself in trouble - by taking apart the bad parts ;) I would wonder if the encoder problem was a worn bushing giving an erratic readings - worn wiper - if it used a wiper , or optical window ? Having done a lot of machining , would think about replacing bushing - but that would add to cost - getting myself in trouble again . Also wether the fit to mount was a matching ? Thanks again for the great videos , John
Nice video, I have the same problem and I need to replace the encoder as well. I need your help in one aspect, below in the comments you mention that an adapter is needed for the rotative shaft , because the ENS1J-B28-L00256L is shorter than the original. Could you tell me which adapter did you use? Thanks !
Hello - Thanks for the great video. I am going to repair my FT-767 encoder now. I noticed that the shaft on the Yaesu encoder is much longer than the replacement encoder. Did you have to extend the shaft?
I'd like to repair a TS-757 GX with the same fault. Does the 757 have the same VFO encoder? Can you tell me the difference between your replacement encoder (ENS1J-B28-L00256L) and the cheaper ENA1J-B28-L00100L? 73, DL7AO
Great job. I had to do those mods to a 767gx several months ago but I altered some resistors on the encoder and that fixed it. How did you overcome the shorter shaft on the New encoder. If I thought a aftermarket encoders shaft was going to fit I would have opted for changing the encoder instead.
The issue with this encoders is that even when you think you have fixed it it will come back for warranty..The best is to swap it out...Thanks for watching 73
Hi Peter, thank you for another nice repair. I have an old Yaesu like this too, and i am happy to know if i ever need to replace the encoder i can follow your instructions. One little question, when you replaced the old bulbs with new LEDs, did you need to use some resistors, and if yes - do you remember the ohm of those? 73 LB5JG Asle
Hi Peter, the encoder you used (and I bought) is not only too short for the knob, the size of the shaft ís also too big and does not fit in the main knob! This was not mentioned in your video. For this reason the repair is much more complicated than you made us believe. Not amused, greetings, Chris
Thank You Peter, for the repair video,. Always fun to watch a pro troubleshoot and make necessary repairs.
Thanks for stepping by Dale 73
There are 2 optical chopper wheels inside, one stationary and the other on the shaft. The FT757GX used the same one. I had one that came out of a 757GXII that the shaft seized but some oil freed it up. Of course I took it apart to see what was inside :-) It sure looks like shaft wear over the aproximate 32 years took its toll. The LEDS was a good move Peter. I had a 757GX that I was inside of for many years :-) Very nice that you found a suitable replacement for the 767GX. I still have the FP-757HD power supply, a very nice one I might ad that has a slow on unlike the Astrons, maybe .25 seconds from 0 to full voltage. I use it to run my Ic706mk2g now.
Yeah the best is to swap the encoder out it really does not make sense to repair it as you will get it back warranty work...Thanks for watching 73
Great repair Peter. The original encoder looks like it had plenty of use over the years. Good to see there is replacement parts for this still out there. Thanks for sharing. 73
I think rotary encoders may fail more often than we think...I had to replace the encoder on my TenTec RX-340 receiver not too many years after I got it; fortunately TT was still in business at that time and the new one was relatively inexpensive....almost wish I'd bought two as a "just in case"! TNX for sharing Peter. 73 - Dino KL0S
Hi Buddy yeah this encoder is known for making trouble it is a kind of miracle that it last that long :-) Thanks for watching my friend 73
You are right Dino we have to replace all kind of encoders very often especially the early versions. I'm curious how the modern versions will turn out...Thanks for watching 73
Nice job as always Peter. Glad to see you back, I've been having withdrawal symptoms.
Thanks for watching glad you like my videos 73
I enjoyed seeing you repairing this piece of radio history!
Hi Peter,
Another nice repair. I wonder if you could make a short video showing the inside of the old encoder. 73 WB3BJU
Thank you Donald! If I can get it somehow into my schedule I will do it. 73
Yes, that would be a nice video to see, and autopsy on the old encoder. +1
Thanks, Peter! Nice repair! Always get a very thorough job from you. Best 73...Dan w4mnc
Glad that you like my work Dan! Thanks for stepping in 73
Nice one Peter looks ok now...
Thanks for watching 73
Thanks for the video. Happy to see you back
Thanks fr watching Bob 73
there was a mod concerning the freq not holding. the batteries were wearing out too quickly so they added a shottkey diode in the cct. of course, the back up switch may have been switched off (next to the switch you squirted) in the first place. I have replaced my battery several times so now have extended it into one of my vacant module bays to make the replacement easier as taking this radio apart is a real nause!
Nice, Peter! I have a 767 on my own, i love that beast, it is still in nice condition, including the 2m module. Yes, it is old. but i personally think it is worth keeping it. Best 73!
You are right it is still a very nice radio ...Thanks for watching 73
Nice to see you back, and giving us another fine video from the TRX Bench. Peter please tell me you put some heat shrink on the leads of that encoder. It's great to see these good old girls get a tune-up not a throw out. And looking back at all the work it must of took to assemble this radio as compared to today rigs is incredible. Anyway's Anywho's Anyhow look forward to your next. Cheers 73
I just finally realized what the TRX stand's for.
Thank you Tom. I realised while editing that I did not show the part where I shrink the tubes but yes I always use it... It is a great old radio 73
Oh wow thought that is well known??
Good as usual, hope the next one is next week, waiting 4 weeks is a long time, looking forward already
LOL :^) Thanks for watching my videos 73
Great repair, very informative...Many thanks Brenton VK3CM Tangambalanga Victoria Australia
Nice video Peter but it does not show how you got the main tuning knob off. I dont see a set screw and it dosen't buge when i try to pull it off.
Nice work Peter, thanks. It seems like they would have provided a connector for the encoder so you wouldn't have to solder the wires directly to the pins.
Hi Robert, no what you have seen was a foam protecting the pins....Thanks for watching 73
It's pretty clear at 25:16 that the wires are directly soldered to the encoder pins...
Sorry I know I asked this before but you didn't reply. I'd really like to know about the encoder shaft? Was the new one long enough or did you have to modify it?
I've seen people swap the encoder before but they needed to extend the shaft making the job a bit of a pain in the butt. So was the one you bought as long as the original or did you do something to make the VFO knob stay on? I'm really interested to know...
Thanks, Great Video as always.
I did the same to my FT 920 only i used a 100 count ,,
the shaft was to short so i made a extender on the lath out of brass
Great video. What Bourne part number did you use? I want to make sure I get the same length shaft, but I Would prefer a little slower pulse rate per revolution. Not sure if 100 would work well but 256 looks touchy in the video to me.
That was my first hf radio in the 90s.
Great job as always, question, was the original encoder not repairable? It seem to be a mechanical failure like a worn shaft bushing as oppose to an electrical failure. Just curious, again nice job and thanks for sharing.
I get myself in trouble - by taking apart the bad parts ;)
I would wonder if the encoder problem was a worn bushing giving an erratic readings - worn wiper - if it used a wiper , or optical window ?
Having done a lot of machining , would think about replacing bushing - but that would add to cost - getting myself in trouble again .
Also wether the fit to mount was a matching ?
Thanks again for the great videos , John
This encoders are suffering from many different issues so the best is to swap it out....Thanks for watching 73
Nice video, I have the same problem and I need to replace the encoder as well.
I need your help in one aspect, below in the comments you mention that an adapter is needed for the rotative shaft , because the ENS1J-B28-L00256L is shorter than the original.
Could you tell me which adapter did you use?
Thanks !
Hi Peter, another excellent repair video. I enjoyed very much. Thanks for your effort. 73
Can someone please give me the part number of the Bourns encoder? Tnx & 73
Great job. Did you have to change the memory back up battery after all? Or did that radio use a super capacitor? Tnx 73 KA2ZOH
Bonjour,
Merci pour le partage, ces vidéos !
Auriez-vous la ref du nouvel encoder ? Merci.
73's
Hi Peter, I've always pronounced it 'borns' but not certain that is correct- who knows?! Great repair on a very good radio :)
Hi my friend Peter a nice repair :)
Hello - Thanks for the great video. I am going to repair my FT-767 encoder now. I noticed that the shaft on the Yaesu encoder is much longer than the replacement encoder. Did you have to extend the shaft?
yes you have to extend the shaft with a coupler. not a big deal Good luck
I really wish you included how you got it in. Nothing fits right.
I'd like to repair a TS-757 GX with the same fault. Does the 757 have the same VFO encoder? Can you tell me the difference between your replacement encoder (ENS1J-B28-L00256L) and the cheaper ENA1J-B28-L00100L?
73, DL7AO
Hello merci quelle est la tension de la led ?? Merci
Great job! would liked to have seen a tear down on the old encoder & possible fix. 73 VK2TGR
Thank you. Yeah as I said in an earlier comment if I can get it in my schedule I will do so..73
Great video as always, thought you must have been on holiday 73's VK6NJP :-)
nice fix. had not seen a video from you in awhile, was wondering when we would get a new video
Thanks for watching glad you enjoyed it 73
Hi Peter, Have you tried changing the dual op-amp on the encoder?
Great job. I had to do those mods to a 767gx several months ago but I altered some resistors on the encoder and that fixed it. How did you overcome the shorter shaft on the New encoder. If I thought a aftermarket encoders shaft was going to fit I would have opted for changing the encoder instead.
The issue with this encoders is that even when you think you have fixed it it will come back for warranty..The best is to swap it out...Thanks for watching 73
TRX Bench what did you do about the shorter encoder shaft?
Where can you get the yaesu 767gx encoder for
Bourns is a very big company.
and never had any warranty issues with Bourns products..Thanks for comment 73
Hi Peter, thank you for another nice repair. I have an old Yaesu like this too, and i am happy to know if i ever need to replace the encoder i can follow your instructions. One little question, when you replaced the old bulbs with new LEDs, did you need to use some resistors, and if yes - do you remember the ohm of those? 73 LB5JG Asle
With 13V supply voltage and a 30mA LED you always can use a 1KOhm resistor and it should work. Thanks for watching 73
Thank you for your answer. 73
Hi Peter Nice video! I'm in troble with rubber ring bending on VFO knob..Any suggestion how to remove? TNX!
normally you can simply pull it...
@@TRXLab TNX Peter this is my issue: ring is 25 years old snd no more flexible/pullable....
Cool fix Peter and good video
How did you get the VFO knob off? Is there a set-screw??
There is a screw under the rubber or may be two
Hello everyone, I recently owned a yaesu ft-767gx, does anyone know how to remove the beep each time the keys are pressed? thanks in advance.
Nothing wrong with old radios. Im on a limited income so all i can afford are old ones.
fully agree nothing wrong with old radios
Do you know where to find the backup battery? Mine is dead.
that is a standard lithium 3V cell with soldering lugs, any electronic supplier should have them...
Surprised you didn't open the faulty encoder. Might have been a simple mechanical problem easy to fix.
This encoders are too old and even if you think it is fixed it will come back...So the best is ti swap it out. Thanks for watching 73
Ich stimme zu, aber es waere interessant nach innen zu schauen. Vielen Dank, Peter (Bitte entschuldige mein schrekliches Deutsch).
Yo tengo un equipo yaesu 767 tengo brolema con encoder no sube di no baja ea8aoc 73
nice
Thanks 73
Hi Peter, the encoder you used (and I bought) is not only too short for the knob, the size of the shaft ís also too big and does not fit in the main knob! This was not mentioned in your video. For this reason the repair is much more complicated than you made us believe. Not amused, greetings, Chris
radio repair is never easy, but I can assure you that I have used this encoder in the same radio several times...
MY VFO AB has the identical wear pattern on it LOL
There is a button on the back that turns off the memory battery for long term storage, perhaps it was pushed causing the original memory issue
Yeah that is how it looks like after so many years of operation. Thanks for stepping in 73
Looks like it works perfect to me! k5AZE
Yes I agree! Thanks for watching 73