Star Wars won't boot and beeps 16 times in test mode

Black Matrix

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Star Wars won't boot and beeps 16 times in test mode

Hey Guys,
I'm not the best PC board repair guy. I have a Star Wars PCB that is beeping 16 times in test mode at bootup and essentially gives no other signs of life. Is the 16 beeps telling me I have a problem on the AVG board. Or is it telling me the AVG chip is bad....assuming Star Wars has an AVG chip. I wasn't sure if it had one of if the whole board was acting as an AVG chip. But I know a bad AVG can prevent a board from booting. If it does have an AVG chip what is the location of it on the board? Any thoughts, advice, or suggestions would be appreciated. As always, thanks in advance.
 
Star Wars won't boot and beeps 16 times in test mode

16 beeps (downward tone) is bad 1L VECTOR ROM on the AVG board. (not an AVG chip)


Well... that's if there are 15 upward "woop" sounds and then the 16th one is the "ewp" downward sound.

All 16 of the same "wood" means all RAM and ROM and EEPROM are good.

Some of those are on the AVG board, but it self-test does not check the AVG chip itself.
 
In retrospect, I believe the 16 beeps...or woops, is signalling no mathbox errors the same as the self test. And while I know this is probably a stupid question....does Star Wars have an AVG chip and if so....which chip is it. I would think that is what would be causing it to not boot up at all. But it could be something else. I had a friend verify the chip at 1L on the AVG board and it tested fine. It could need a socket, but I have a feeling that's not the problem.
 
The 16 beeps test RAM and ROM. Later in self test the math box, divider, and matrix processor are tested but not with beeps. Star Wars has an AVG board and the 40 pin chip on that board is the AVG chip. A bad one can cause screwy or no graphics, but not usually failure to boot. Your board is booting since self test works (so there is clock, data and address bus activity, etc.) Does it play blind?
 
For the record, a new AVG got it back up and running. Not sure if its entirely 100% yet, but it seems to be. Also seems like the AVG chip is 90% of a Vector boards functions with all the crap that goes awry if its not right.
 
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