Thunderfunk tfb 750a

[Parkerk]

Hi all! I’ve been on the hunt for schematics for a thunderfunk tfb 750a so I can fix mine! Any help is greatly appreciated! Thanks in advance!

[DrGonz78]

This is what I just found… is it correct? Post #5 on the bass talk site.

[Parkerk]

It is correct for the preamp section, but not for the power section, my apologies, I should have been more specific in my op, I need the power section schematic. Thanks so much for finding what you could! I appreciate it!

[DrGonz78]

Good to know we at least have the preamp. I would think the power board between certain models might be similar.

[Parkerk]

They’re at the very least similar, I’m not an experienced amp tech by any means but visually they look pretty identical, I’m just not sure if the actual values on the board are the same as the ones on the schematic that’s labeled for the tfb420 model