Doing a burn-in test of an Asteroids PCB. After about
6 hours of being on, the rocks disappear from the screen. Everything else
seems to be working fine. The game plays, sounds are all fine, your ship
moves and fires and the two enemy saucers both appear, but no rocks appear.
The rocks are there because if you hit one of the invisible rocks, the rock
exploding sound is heard, and the bullet stops. Your score displays, but
the attract screen that normally shows between games doesn’t display
(except for your ship flying around). I know the monitor is good as
I’ve tested other PCB’s in this game for 24 hours before? I
checked the Audio/Reg board and it’s putting out a solid +5.00 VDC (measured
on the PCB) both when I initially turn it on and when the rocks are not
present, which to me points to a PCB problem. Any ideas anyone?
Joe