Arcade Collecting > Restorations & repair
Dig Dug Restoration by a Complete Noob
Pop Culture Portal:
I've finally found a working GO7 monitor and replaced the EZ that was in the Dig Dug, but still no picture. I do now have neck glow and a static sound when the machine is turned on. I detached the speaker and the hum is now definitely coming from the PCB. There is what looks like a red LCD light lit up on the PCB. I accidentally rubbed up against one of the chips on the PCB while inside the cabinet and I actually thought it burned me it was so hot. I carefully touched some of the others...some just as hot to the touch and others ice cold.
Any suggestions?
:P
EDIT: Here are some photo updates.
This shows still a stray monitor wire that appears to go nowhere. Wonder if this is a hack that was done so the harness could be used with the EZ monitor that used to be in it? You can see it in the bottom center of the picture.
This picture shows the PCB light that is lit up. You can also see that I removed/unsoldered that odd wire sticking out of the PCB.
Kevin Mullins:
I wouldn't worry about that connector coming off the monitor at the moment. It's not needed, but it's not hurting anything either.
Sounds like your game board is still dead.
Until you can coin it up and "play" a game.....looking at the monitor is pointless.
(unless it'll get into test mode at least)
Level42:
That's not always so, board can appear dead but still put a static garble picture on. If fact that's what usually happens when the processor is not running.
Pop Culture Portal:
What about replacing some of these chips on the PCB? Some of them are clearly labeled as to what type they are and others just have a number on them that doesn't correspond to anything listed on Bob Roberts' pages. And nothing I see on the schematics for the PCB match up with what Bob Roberts has either (this is a Rev. B Dig Dug board BTW). I just noticed this morning that at least two of the chips are missing the little metal legs. I suppose once I figure out which chips to get, then I'll have to figure out how to program some of them, I suppose. I also know I should get a new connector for the harness to connect to the PCB.
SirPeale:
Unless you're going to be doing a lot of PCB repair, it's probably worth your while to send the board to a pro.
Those 'hot' chips likely either have a short in them, or something around them is shorted killing the chip.
Check eBay as well...my Centipede was in the same boat, and I picked up a board there.
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