G07 No Glow

WarLordAG

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My Marble Madness went down the other night.
It's a G07, I wasn't getting anything, the tube wasn't even charging up.

I got a chassis a buddy had purchased that was supposed to be working and it charges the tube, but no glow, and thus, no picture.

Both fuses check out ok, b+ is correct. I then replaced the hot and vr. Still no glow.

Any thoughts? It's definitely been capped.

Any thoughts?
 
Last edited:
Check the neckboard for small cracks that would keep the heater voltage from reaching the tube. Also check for the heater voltage (about 6.3vac) from the chassis to the neckboard. Check the wires on the back of the focus and screen pots. Check around the flyback for small cracks on the traces (common)...
 
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