Got the board back and it works great! Amazing turn around time....you got in on a Friday and I had it back the next Wednesday....Unheard of especially with a check in the box for payment! Did you change anything else besides those 2 Zener diodes to heavier duty components?
Thanks again.....
Do you work on Tektronix items like a 528 waveform monitor, that may need a CRT and power supply work?
Larry