Re:

I'm not sure about swapping the HV unit over ( maybe you could compare the
schematics of the two monitors and see if they use the same pinouts and
voltages ?)

As for the Halo in the middle of the screen... I had a similar problem on my
asteroids so asked a while back on here....

I've not looked at it for a while, BUT was led to believe that the HV board
may be at fault (so maybe you are on the right track here) and that I
should re-cap it initially to see if it cured it... (the HV was measuring
ok with a probe and the other voltages looked ok with a DVM - I wonder if
they would be ok on a scope ?? ) I had also tried another deflection board
with no luck.

I could adjust the brighness and contrast to reduce the dot to a "glowing
blob", but anyless made the game unplayable...I couldn't get rid of it fully
either... mocked up picture here...

http://uk.geocities.com/colin.w.davies@btopenworld.com/Astyblob.jpg

Is this what you get when you adjust the brightess / contrast ?.

It was also suggested that the glow was due to there being a burn in the
phosphur in the middle of the screen, but I think that this was a symptom
caused by the "bright dot in the middle" problem and not the cause ( burned
out phosphur shouldn't glow brighter...it should be dimmer !! )

What I did notice however was that the glow was present during the game
screen, but dissapeared (or may have just moved) when you came to the "enter
your name" screen....

If you do manage to cure the fault by swapping or repairing the HV unit,
please post back and let us all know.

Thanks,
Colin

----- Original Message -----
From: Anthony Pietrak <anthony@quarterarcade.com>

> Also, I have a G05-801 that has a "dot with a bit of a halo" in the
> middle of the screen. It does not go away when the brightness/contrast
> is turned all the way down either. I've tried 3 different deflection
> boards and 2 different power boards with the same result. Any thoughts?

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Received on Thu Jan 27 15:45:23 2005