Fisher 500-tx schematic?

Detailman

Addicted to tweaking
I've got this Fisher 500tx SS unit that I like the sound of. Real peppy and powerful sounding.
I've recapped the amp board, power supply and tone controls but after doing the pre-amp board I've encountered a strange problem.

I had just replaced a couple of lytics on the board and everything was fine.
Then I though it was still a little noisy so changed the transistors with reliable subs.
I've been trying different values etc. so I've taken board out a few times.

The last time I lost the right channel in stereo in the aux position. I have since been back in there and rechecked everything a few times. Still no luck.

Both channels fine in mono mode or phono. Tape input is after pre board so that also is ok.
I've got the schematic so I'll post a scan of it. I can't figure out what is different between the phono stage and the aux input.
Seems like it's got to be something simple but I'm not real good with schematics:tears::tears:

All connections are good and have been checked many times. Also cleaned all pots and switches a few times.

Hope attachment is readable.
 

Attachments

  • scan0012.jpg
    scan0012.jpg
    87.3 KB · Views: 39
Back
Top Bottom