Re: VECTOR:

Did you scope it and see what the Z looks like?


Colin Davies wrote:
> 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/[email protected]/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 <[email protected]>
> 
>>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?
> 
> 
>