Aux not working, what causes that ? C31V
- Thread starter 7.62
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clinic-audio
all on YAMAHA untill 1990
OK
1) do you have same troubles with same input with remote ?
2) it is coming from glue fixing the iron plate touching the pcb and made some bad connections . You need to delete completely the front panel + front pcb to get access to the good area
step 2
step 3
step 4
step 5
dammaged tracks are under this iron plate
I hope this will help
you have to double check also if the top cover big screws (4) did not dammages flat wire because they are too long !
and they short wires to ground
1) do you have same troubles with same input with remote ?
2) it is coming from glue fixing the iron plate touching the pcb and made some bad connections . You need to delete completely the front panel + front pcb to get access to the good area
step 2
step 3
step 4
step 5
dammaged tracks are under this iron plate
I hope this will help
you have to double check also if the top cover big screws (4) did not dammages flat wire because they are too long !
and they short wires to ground
7.62
Infinity nutcase.
Thank you clinic-audio for being so detailed here. I don’t think I have the talent required to handle this. I’d love to give it a go but I seem to get in more trouble when I start popping hoods…lol. But it seems like, at least from what I’ve read this is a pretty common problem with these preamps.
I didn’t try from the remote, did know I could do that but if mine looks like those pictures maybe it better not too. I made a call today to Audio Classics, if things work out then I might give this a try, but not until I have the other one here. I do truly appreciate your response. If I do go for it, I’ll be sure to post pics and maybe you can scrutinize for me.
Thank you again
.
I didn’t try from the remote, did know I could do that but if mine looks like those pictures maybe it better not too. I made a call today to Audio Classics, if things work out then I might give this a try, but not until I have the other one here. I do truly appreciate your response. If I do go for it, I’ll be sure to post pics and maybe you can scrutinize for me.
Thank you again
.
7.62
Infinity nutcase.
Clinic-audio, I’m thinking about trying this. Once I get it down to that point, how do I fix the damaged areas, it looks like more than cleaning. If the traces on the board are grounding out, would I clean them then add something like electrical tape over them to insulate them ? And is it possible to remove that metal strip ? To perform the repair.
Thank you,
7.62
Thank you,
7.62
I fixed mine by cutting away two traces and soldered in wires directly from the pushbutton to the JST connector for AUX1 and AUX2. I know this seems harsh but a common way EE techs correct PCB problems.
The thread I posted this problem on is https://audiokarma.org/forums/index.php?threads/problems-with-my-c31v-preamp.884047/#post-13071055
The thread I posted this problem on is https://audiokarma.org/forums/index.php?threads/problems-with-my-c31v-preamp.884047/#post-13071055
