Galaga Stuck on Ram Ok

Chilimac

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Donor 2012
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Apr 12, 2012
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Mesa, Arizona
Im getting a Galaga table top from a from I was wondering if anyone knew why it stays stuck "ram ok" screen you can see the stars in the back ground just stays there. Anybody have any idea how I can fix this. I did some google searches and got it can possibly be pin 11 of section 3j but cant confirm this. Also if it is that pin how do I replace it does anybody know where I can buy just that pin?
 
It's not just a pin... it's a pin on a chip at that board location. You replace the whole chip.

Anything that causes the 2nd or 3rd CPU to not start up will cause that... bad ROM/EPROM, CPU issue, etc...

You picked a bad board to start with. Galaga is a VERY complicated one to repair as it has a load of poor quality sockets and if it has the old resistor packs then all of those need replacing too. I repair them but won't take on any new Galaga boards until late August because I have a stack of 'em to go through as it is. (I have 14 of those boardsets to repair for 2 people... one local and one in OKC)

RJ
 
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