I love working on vector stuff, but I've never repaired the HV section before.
Monitor #1 — 15V2000.
Symptoms: Unstable image size.
I've seen this be caused by caps before, so I shotgunned the deflection PCB & HV cage. Issue persisted. I have also heard that a failing HV diode can cause this. I replaced the diode with a Varo H598. I kept the original rubber boots, since they were in okay shape, and coated the joints with translucent dielectric silicone grease. Issue persists.
Not sure where to go from here — voltage regulator?
Monitor #2 — 19V2000.
Symptoms: No HV. Spotkiller off. Neck glow & deflection chatter present.
HV cage was missing Q900, plus mica insulators for Q900 & Q903. Replaced missing components & tested Q900/Q903; they metered fine, but no change when power applied. Measuring the cage output on P900, I get 18VDC on pins 4 & 5 (should be 95 & 98VDC), and 3VDC on pins 1 & 3, which should be 300 & 410VDC. Swapped in another cage, monitor works, so the issue is in the HV section. Is there some way to test T900?
Monitor #1 — 15V2000.
Symptoms: Unstable image size.
I've seen this be caused by caps before, so I shotgunned the deflection PCB & HV cage. Issue persisted. I have also heard that a failing HV diode can cause this. I replaced the diode with a Varo H598. I kept the original rubber boots, since they were in okay shape, and coated the joints with translucent dielectric silicone grease. Issue persists.
Not sure where to go from here — voltage regulator?
Monitor #2 — 19V2000.
Symptoms: No HV. Spotkiller off. Neck glow & deflection chatter present.
HV cage was missing Q900, plus mica insulators for Q900 & Q903. Replaced missing components & tested Q900/Q903; they metered fine, but no change when power applied. Measuring the cage output on P900, I get 18VDC on pins 4 & 5 (should be 95 & 98VDC), and 3VDC on pins 1 & 3, which should be 300 & 410VDC. Swapped in another cage, monitor works, so the issue is in the HV section. Is there some way to test T900?

