Re: Electrohome G08 question

Yeah I have a HV probe and should have thought about using it. I recently
did an overhaul on my tempest monitor and that's one of the things I did.
It should have been about 19.7kv (if I remember correctly) and it was only
about 16kv. Adjusting the high voltage definitely improved the picture
and reduced it to the right size.

If I do this to my G08 monitor and it works - you can chalk up another
"duh" on my list.

Thanks...

Matt

_____________________________________________________________________

On Wed, 21 Apr 1999, John Robertson wrote:

> I agree with Rodger, sounds like too low HV, is the picture not focused
> as sharply as before? I would suggest that you check the HV board for
> bad caps, and see if the paint on the HV pot has been tampered with.
> HV probes are not very expensive...
>
> John :-#)#
>
> Rodger Boots wrote:
> >
> > I suppose someone may have put in the wrong value
> > (too low) yoke return resistors, but a more likely
> > possibility is that the high voltage is set too low and
> > the picture is "blooming". If you have a high voltage
> > probe that is easy enough to check.
> >
> > Matt Rossiter - Verio Southern California wrote:
> >
> > > I have an Electrohome G08 monitor that is putting out a picture too large.
> > > The x and y size pots are as low as they can go. I've put in new x/y size
> > > pots as a matter of fact. All the voltages I'm reading are pretty good.
> > > I know the signals coming out of the x/y game boards are good.
> > >
> > > I've kind of solved the y-size problem by putting in a slightly larger
> > > potentiometer. Putting a slightly larger potentiometer in for the x-size
> > > doesn't solve the horizontal problem - besides it's probably cheating.
> > >
> > > This particular G08-003 monitor doesn't have the input protection board -
> > > but I'm not sure if that would effect the size problem.
> > >
> > > Anyway - I'm stumped. I have a few other ideas to try, but maybe someone
> > > could offer me suggestions.
> > >
> > > Thanks...
> > >
> > > Matt
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> mailto:jrr_at_flippers.com, web page http://www.flippers.com
> "Old pinballers never die, they just flip out."
>
>
Received on Wed Apr 21 10:57:17 1999