Well the Asteroids I aquired as non working doesn't, no surprise there.
So I have been browsing this section for Asteroids repairs, and have tentatively come to the conclusion that since I have +5.01 volts at the PCB and the monitor neck glows, but the 1 &2 player LEDs stay on and the spot killer is on that I probably have a bad board, right?
I have pulled/cleaned/reseated the socketed chips, eracered the PCB fingers and coaxed the pins of the connector to be nice and tight with no change. There is a hum, but i do not consider it loud, plus it is coming from the marquee light area.
Should I just forget about it and seek a board repair dude? Or is there more I should look at first to get it at least paying blind?
Whew, 3:30 AM, time to crash... lol
Thanx in advance for any help
So I have been browsing this section for Asteroids repairs, and have tentatively come to the conclusion that since I have +5.01 volts at the PCB and the monitor neck glows, but the 1 &2 player LEDs stay on and the spot killer is on that I probably have a bad board, right?
I have pulled/cleaned/reseated the socketed chips, eracered the PCB fingers and coaxed the pins of the connector to be nice and tight with no change. There is a hum, but i do not consider it loud, plus it is coming from the marquee light area.
Should I just forget about it and seek a board repair dude? Or is there more I should look at first to get it at least paying blind?
Whew, 3:30 AM, time to crash... lol
Thanx in advance for any help


. The 2114s are the static ram memory chips. The one at location D2 is the one that is suspect. If you have some extra 2114s (sounds like you do not), you would carefully stack them on top of the suspect IC. If you do it just right and all of the legs make contact with the legs of the suspected bad chip, the outputs of the good chip can sometimes override the incorrect signals from the bad chip. Stacking a couple ("piggybacking") makes the overriding outputs stronger and helps overcome the incorrect output signal from the bad IC. As I mentioned before - this is not a sure fire diagnostic tool but is a quick and dirty diagnostic to try.