I'm new here. I have an ST-70 in pretty rough shape that I plan on fully restoring. I've already started taking pictures from the get-go, so I should have some great before and after pictures!
This is an older model with the A470 output transformers. They appear to be in good shape.
Someone's already recapped the thing and removed the choke. Luckily I found a decent replacement. (1.2H, 60ΩDC)
However, the thing is, I am a cheap high school student. I refuse to spend a lot on this restoration, but I really want a new chassis. So if I get a new chassis, I won't want to spend a lot on the rest of it.
I have successfully made some PC boards before, so I am up for the challenge of making a driver board. Firstly, it has to be single-sided. Secondly, I would like to avoid the 7199s, so a 12AX7/12AU7 board or something close would be great. I also want extensive documentation for how to hook it up to the rest of the amp. Schematics, etc.
I don't have any CAD software, so if someone has a B&W picture of the layout, that'd be awesome!
Anyone have any suggestions?
Kyle