First, I know the issue is on the deflection board because I swap in a known good and game works as it should. If I remove d504, spot killer LED, the game behaves normally with brightness and contrast control, however with d504 installed I have to turn brightness up and get spider effect, turn down and image goes away.
Deflection board has been recapped (at least c500-503 have)
from B&W vector Faq 1.2
Symptom: Monitor Powers Up, Spot Killer On. If The Brightness Is Turned Up, A Complete
Screen Is Seen, But It Looks Like A Spider Web.
Check and replace as necessary the brightness or the contrast pot. Also check for bad solder joint,
or a bad tantalum capacitor in the spot killer circuit.
^^ not sure what tantalum is part of spot killer don't see it on schematic but this is the symptom.
should I start with q500- 502?
Deflection board has been recapped (at least c500-503 have)
from B&W vector Faq 1.2
Symptom: Monitor Powers Up, Spot Killer On. If The Brightness Is Turned Up, A Complete
Screen Is Seen, But It Looks Like A Spider Web.
Check and replace as necessary the brightness or the contrast pot. Also check for bad solder joint,
or a bad tantalum capacitor in the spot killer circuit.
^^ not sure what tantalum is part of spot killer don't see it on schematic but this is the symptom.
should I start with q500- 502?
