flicker ? slam game sound ?
Originally posted by Equites
Okay, seems your PSU is fine.
Midway SI PCBs tend to still give some kind of output to the monitor even when they are 90% screwed. So you should really have something.
Try this test;
First remove ALL the game ROMs, then turn the game on. You should see a repeating pattern of a thin and fat lines across the screen. Next close the Slam switch for a moment,
this pattern should change, but still be solid lines (thin or fat doesn't
matter, but they repeat). Now if any lines are flickering, or there are
dots on the screen that are sometimes covered by lines but reappear when
you "Slam" the switch, then you have RAM problems.
i have some line flicker , sometimes even when slam switch isnt shorted
when i do short slam switch i get a explosion noise from the machine , like ive died and been shot is this correct ?
when i first turn on lines are uniform and do indeed more across the screen as described .
ive turned the width right down so i can see the lines now
this is what happens :
lines move across screen
i short switch and :
i get explosion sound and lines flicker from left to right . like the machines being shook
what im describing make sence ?
thanks
richard