Ms pacman with a 1 flashing on the screen. no boot

still cleaning the chips off, and replaced the 4K and 4M chips to get past my first problem (all zeros). has anyone had this glitch (sometimes 1 small patch of characters scrolling in 1 spot, and usually, just a blinking number 1)...so far, nothing i can find on http://www.arcadegameover.com/pactrouble.html.

thanks in advance.

Going from memory but that means one of your roms (6E 6F 6H 6J) is bad or not making good contact due to a bent up leg or bad socket. The number "1" should correspond to 6F (again going from memory). The rolling characters means it's trying to boot.

Bill
 
Going from memory but that means one of your roms (6E 6F 6H 6J) is bad or not making good contact due to a bent up leg or bad socket. The number "1" should correspond to 6F (again going from memory). The rolling characters means it's trying to boot.

Bill

thank you. i should have finished cleaning before posting.
 
well. swapped out 6F with 2 known good roms, and nothing changes. swapped out 5E, 5F, 6E, 6F...i don't have a spare 6H or 6J.

so stuck for now.
 
Is the socket ok for 6F? Best way to check is with your meter from each leg to the solder pad on the back of the board. They are single wipe and for some strange reason most of the bad ones I found have a fractured contact on pin 12.

Bill

well. swapped out 6F with 2 known good roms, and nothing changes. swapped out 5E, 5F, 6E, 6F...i don't have a spare 6H or 6J.

so stuck for now.
 
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