help with old cs-800 output triac and driver bord?

[MOREROCKS]

I was wondering if anybody can help me with an Old cs-800 not shore of the model number but a 77 is stamped on the power boards I think it was made in 1977. I need to replace one of the out put triacs but I'm not sure which one to use I read that you can use a mac224 but which one mac224 ab or a8? The next problem was my fault I drove the amplifier two hard and blue something on the driver board still plays somewhat but is extremely distorted if a swap driver boards it works fine. i have tested all diodes and resistors there all OK I'm afraid it may be in one of those ic chips? But I cannot find any of those old IC chips is there any equivalent modern replacement for those? Or maybe I can find a new driver board? Thanks for any information

[Jazz P Bass]

I would suggest that you contact Peavey.
Peavey.com
They are a very helpful group of people.

[soundguruman]

601 483 5365
The parts dept will help find the parts and schematics by serial number of amp. I suggest you get an experienced tech to help fix it.