Re: On to the experts...

On Thu, 9 Oct 1997, Mit Matelske wrote:

> I have reached a stumbling block in repairing my first
> WG monitor. After replacing a lot on parts, everything
> seems to be working alright EXCEPT I am missing the
> bottom 1/4 (or maybe half) of my screen.

Are you sure it's the monitor, and not the game board ?

Example: I had an Asteroids where the screen was squashed to the bottom half
of the screen. Nothing was missing, but the picture was half height. Problem
was the output buffer for the Y driver on the game board. It was blown and
not operating at full frequency response. Result: about half the waveform
output -- screen squashed.

If you've got a spare of anything, try swapping, or hook a scope to the PCB
output. Quick check to keep you from going down a blind alley.

If this is too obvious and you've already done it -- please excuse.
:-)

-Chris

==========================================================
Chris Candreva -- chris@westnet.com -- (914) 967-7816
WestNet Internet Services of Westchester
http://www.westnet.com/
Received on Thu Oct 9 07:32:47 1997