I got the amps operational after replacing a few resistors and some transistors. I wish I could be more specific but it's been a year since I worked it.
Fired it up on the DBT and I can't get the right amp to balance. It was reading -.120v's with the trimmer full CW's. I replaced the diff pair with the 2N5961's as recommend from this forum and it got worse to -.310v's.
I checked all the resistors for value and the solder connections are good.
Any experience on this set with this issue?
I didn't gain match the pair thinking that the trimmer would have enough give to compensate.
I was thinking of swapping the pair wondering if it would go the other way? (To the plus side).
The protection relay is working.
Also how do you set the idles? Reading the manual for the 240 makes it look like a chore (I don't have the full SM for the 250). Is there a different procedure that one can use?
A image of the turd:
Fired it up on the DBT and I can't get the right amp to balance. It was reading -.120v's with the trimmer full CW's. I replaced the diff pair with the 2N5961's as recommend from this forum and it got worse to -.310v's.
I checked all the resistors for value and the solder connections are good.
Any experience on this set with this issue?
I didn't gain match the pair thinking that the trimmer would have enough give to compensate.
I was thinking of swapping the pair wondering if it would go the other way? (To the plus side).
The protection relay is working.
Also how do you set the idles? Reading the manual for the 240 makes it look like a chore (I don't have the full SM for the 250). Is there a different procedure that one can use?
A image of the turd: