Recent content by MikeBwiz

Thanks Wasnex. I agree the amp is quite outdated and the motivator to fix this thing is sentimental. It belonged to my late father. I would also like to learn enough to troubleshoot amps in the future as I am a self proclaimed technologist. I spend a boat load of time in my career learning how...

Thanks for your advice. I will do some more research and give updates as I go.

Sorry. I have NOT been able to find anyone that is willing to work on it. I'm not a professional by any means but I am not your stereotypical stoner guitarist that doesn't know how his equipment works. I am the most dangerous type of person, one with a little bit of know how and an appetite to...

Have have a basic understanding of how electronics circuitry works. I did take several classes using an oscilloscope but that was well over two decades past. I am generally proficient in understanding most tech subjects as I am a research chemist by trade. I do have a DMM and a very cheap hand...

I just found a schematic from the Biamp website. Any suggestions on which part of the circuit I should focus on first?

Note- this channel cut out when I was playing on it (not bridged) with a 2 X 15 enclosure. I assume that I overloaded the impedance requirements on the amp but I cannot confirm the cabinet specs.

I have a 70s model Biamp TC-225 professional power amp that needs to be repaired. This thing has two channels with 225 watts at 8 ohms on each channel and 600 watts bridged. One of the channels has quit working (no sound). I used this amp with my old Carvin PB-15 to drive a David Eden 410 cab. I...

Thanks! I really appreciate this! Maybe this old amp will get a new spot on my gigging rig.

I know this is an old thread but if anyone has any information on the mods to this pre-amp I would love to see them. I have been playing on mine for over a decade and it is time.