04-17-2023, 11:45 PM
Hi All,
I recently got back to work on my non-working 9100B that I bought several years ago. I found a smoked zener diode on the ROM address driver board. It measured 0 ohms before unsoldering it then broke while I was extracting it. Problem is the color bands are burned beyond recognition. Anybody have an idea what Vz or Vcol is? Vcol = -(15 - Vz).
Thanks for any assistance!
Richard
[attachment=11989]
[attachment=11990]
I recently got back to work on my non-working 9100B that I bought several years ago. I found a smoked zener diode on the ROM address driver board. It measured 0 ohms before unsoldering it then broke while I was extracting it. Problem is the color bands are burned beyond recognition. Anybody have an idea what Vz or Vcol is? Vcol = -(15 - Vz).
Thanks for any assistance!
Richard
[attachment=11989]
[attachment=11990]