Well I finished my St-70 (VTA PCB) project.....at last.
I went to power it up tonight and I have a problem. Can anyone advise, please?
I put a 1amp fast-blow fuse in, and have been following the instructions that came with my VTA Board. I put in JUST the driver tubes first, and they glowed. I powered off, removed the driver tubes and put in the rectifier and Right hand power tubes. The fuse blew. I put in another 1amp and that blew too. I changed the power tubes, tried once more. Blew.
The rectifier is a NOS and tested good on my borrowed tube tester.
Can anyone help?? I went over and over the wiring before powering up, and I don't think I've made a mistake. EVERYTHING except output trannys is brand new. THANKS!!