RESOLVED - WG6100 - deflection board issue due to heat?
Working out the last kinks in resurrecting a Tempest. Just got a fully refurbished HV cage and neck board in the mail from Andrewb (thanks much!), and dropped in a deflection board that I'd rebuilt from a carcass.
HERE is what I'm seeing after it's warmed up for a few minutes.
All diodes and transistors check out on the deflection board (P314, no input protection PCB). New filter caps. All connectors re-flowed. Have checked resistors around the X/Y transistors - nothing open, nothing that looks burned up. LV2000 installed.
New chassis transistors for X/Y -existing power transistors. All check out fine, consistently.
When I have a fan blowing on the deflection board, it's rock-solid, and looks excellent. No jiggling in the bottom/right corner, no general wackiness on the right side of the screen. Can play multiple games without issue - looks great.
So - should I let it heat up, break out the compressed air/freeze spray, and start hunting? Looking for clues as to what may cause this particular behavior to give me a place to start... Does this indeed seem like a deflection board issue, or do I have a flaky chassis transistor, or something else?
Appreciate any tips/insight!
Working out the last kinks in resurrecting a Tempest. Just got a fully refurbished HV cage and neck board in the mail from Andrewb (thanks much!), and dropped in a deflection board that I'd rebuilt from a carcass.
HERE is what I'm seeing after it's warmed up for a few minutes.
All diodes and transistors check out on the deflection board (P314, no input protection PCB). New filter caps. All connectors re-flowed. Have checked resistors around the X/Y transistors - nothing open, nothing that looks burned up. LV2000 installed.
New chassis transistors for X/Y -existing power transistors. All check out fine, consistently.
When I have a fan blowing on the deflection board, it's rock-solid, and looks excellent. No jiggling in the bottom/right corner, no general wackiness on the right side of the screen. Can play multiple games without issue - looks great.
So - should I let it heat up, break out the compressed air/freeze spray, and start hunting? Looking for clues as to what may cause this particular behavior to give me a place to start... Does this indeed seem like a deflection board issue, or do I have a flaky chassis transistor, or something else?
Appreciate any tips/insight!
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