new pac board issues

[death69inc]

recieved my "new" used ms pac pcb today
not sure if its an issue or not
but when i 1st turn on my ms pac the sounds is messed up sounds wierd after a min or so (warms up) sound is fine same with the boarder colors of maze boarder colors roll then after a while they are fine

not sure if this is normal as my other ms pac working is a jamma (working not the right word ) lol it resets after playign for a while dif times but either case I do not think it has these issues

[death69inc]

not to worried about the last issues new board and it has much more issues to worry about lol

[death69inc]

wish all borads where this easy new board had l's going across the screen and was cycling the fruits and resetting
did not replace vid ram 1 at time like i should, replaced them all at same time and works great

so i can not tell what one or ones where bad but the troubleshooting guide on net pionted to 2 or 3 rams so i replaced them all with rams from blind board

Edit  went back tested each v ram in 4k and found the one bad and gave me same video issues ...so was only one ram causing it  all others fine

[death69inc]

went back to the 1st board playing dead
since now i have a working board i figured i would swap all socketed chips etc to make sure htey are all working sure enough prom located at 7f caused no video in my working pcb thought yes i found the issue ......replaced the prom on blind board still blind lol @)*$&)@*$&@*)$

went ahead and replaced all masked roms with reg eproms hate masked chips either case

1st board I think is still playing blind (killed sound) have a amp going to try to get sound back so i know its at least playing blind agian
2nd board after warm up works 100% sound is wierd till then
3rd board works 100% now i replaced a bad 2114 at 4k 
4th baord not here yet
5th board not here yet

[death69inc]

4th board here
this one seems to be fun

power up all 0's and fruit cycling
replaced all 6 vrams to see if it cured the matter
0's went away now i have random garbage
incert abc diag board gets worse garbage and once 0's came back
un socketed reincerted all socketed chips nothing has changed
put orig aux boasrd back on sometime get little garbage and sometime get much garbage
replaced eproms and proms now exhausted all easy fix stuff (socketed)
ran down traces for vram none are broken from scratches etc


here is what i see so far
two of many garbage screens with aux board installed bars dance other crap moves around



after abc diag board installed game rom


after diagnoistic rom installed



from the picures you can see the diagnostic board is workign i can slect and use buttons etc jsut have no clue what im looking at lol