G05-801 blank screen now

Mr Do

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Works with slight jitter on graphics.

Did Bob Roberts cap kit.
And did Pot kit on Deflection board.

Now no picture, blank screen.

Neck glow present.
Chatter present.
No spot killer on.
All fuses good.
When I turn monitor off, there is a white dot that flashes in the middle of the screen.

Brightness and contrast does not change blank screen.
But both should be 500K pots.
The kit came with 100k pot for brightness.
I used what the kit came with. (I contacted him about the kit and it is for a G05-802. He will specify the kits in the future.)

Also, all 4 linearity pots in the kit I installed where 1k. But the schematics shows one should be a 2k.
Whould these values make the difference?

What's next?
 
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I just tried putting contrast and brightness up all the way and can see slight picture.
Must be the pots.
Will put old ones back in and report findings latter.
 
Update

Recieved the two correct pots from Bob Roberts and it works now.
Picture comes up fast.
BUT THE SCREEN HAS A LITTLE JITTER TO IT.

Anyone know how to fix this?
 
G05-801 Asteroids monitor

I have two of these monitors and they both have the picture shake. Almost like an in, out motion to picture.
Only one monitor has been capped and has new pots on deflection.
Any help appreciated.

The game works fine with other monitors.
Who repairs these?
 
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I have two of these monitors and they both have the picture shake. Almost like an in, out motion to picture.
Only one monitor has been capped and has new pots on deflection.
Any help appreciated.

The game works fine with other monitors.
Who repairs these?


Is the HV cage screen cover installed??

Also could be the VD900 Voltage Doubler going, the picture blooms when it takes a shit.
 
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