Randall RB100

[Axtman]

I am looking for a schematic or service manual for a Randall RB100 solid-state bass amp. Thanks.

[g1]

I have no idea if this is legit, and it does not have the power amp.
https://oshwlab.com/Tymbler/randall-rb-100

[Axtman]

Thanks, but I think that is for the later version of the amp.

[g1]

How old is the one you have?

[Axtman]

The output transistors have a date code of 1990. It looks like this:

[Axtman]

It is NOT the later version:

[The Dude]

The output transistors have a date code of 1990. It looks like this:

I just recently repaired one of those. I never did find a schematic, but found several high ESR electrolytic caps. The amp worked great after replacing them, so didn't look further.

[Axtman]

I may have fixed it without a schematic. The problem was the nonworking compressor. It has a hard to find LM3080 IC. I think the problem was the socket. I removed the IC, sprayed some deoxit and reinstalled the IC and it appears to be working fine.

I still would like to have the schematic.