Small monochrome CRT monitor issues
On Wed, 3 Aug 2011 12:18:07 -0700 (PDT), Jerry Biehler
put finger to keyboard and composed:
I have high voltage, getting about 260v to the screen grid, filament is glowing. Scope shows activity on horizontal and vertical deflection. I can see the amplified video signal at the cathode on the tube.
What am I missing? Not enough HV? Poisoned cathode?
If you hold the scope probe near the face of the CRT, do you see a
flyback pulse?
Does the FBT have a stick diode in its EHT lead?
- Franc Zabkar
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