Simmons DA200S_ schematic added

[ubxf]

Hello,
I was given one of these amps the good news it makes a sound , the bad news it's a squeal and when plugin in a source nothing changes.
I tried to find a schematic but no luck. I will open it a take look. If you have any experience with a similar unit and willing to share a few pointers it would be greatly appreciated

 

[pucho812]

Simmons is a Guitar center owned brand.
Good luck.

 

[ubxf]

I found out through wayback search that at some point 20 years ago there was a 3 part schematic floating around through private emails but nothing ever published.

 

[ubxf]

I opened it up, looks like the preamp is working, I can hear through headphones. The amp is dead though no more sound. It looks like there was water damage

 

[ubxf]

Simmons very nicely shared the schematic. TR1 looks like it was potentially damaged. Would that cause the amp not to work at all?