Arcade Collecting > Miscellaneous Arcade Talk

Missle Command Circut Board

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Wade:
Don't razz me too hard, I was proud that I finally fixed something... even if it IS jacklegged... ;)

Yeah, but there were tiny traces on both the top and the bottom of the board, depending on the pins.  Most were on the top.  I was afraid the solder wouldn't make contact.  Maybe those concerns were unnecessary.  Also, I had a couple of traces were the metal got torn off when I removed the chip.  This made the problem even worse (the blob of solder likely wouldn't reach the trace on it's own).

If I have to replace another RAM chip, I will try the socket again.  I just didn't see how I could solder one of those sockets in there.  Looked impossible to me.  Maybe I was just intimidated by the size.  I have soldered lots, but I have never soldered something so tiny and so hard to see.  I will also try a lot harder not to damage the traces when removing the old chip. :)

TTYL,
Wade

RayB:
OH it was one of those tiny chips? Sorry, I was thinking about the big EPROMs.
Yeah, I understand your hesitation now.

Wade:
Okay, I'm back to square one.  Actually, I'm back further than that! :(

After my MC restoration, it isn't working any more.  Test mode gives static, then a deep and then a high beep, which I think indicates everything is fine.  However, the game won't start up.  I just get a dark blue screen, and some garbage if I hit buttons, roll the ball, etc.

I went ahead and installed the Bob Roberts AR2 rebuild kit.  Install went fine, didn't fix the problem (I double checked the 5V and 12V afterwards and dialed in the 5V).  The 12V is about 11.8 or so, which is what it was before the AR2 rebuild, too.  Is there a way to adjust the 12V?  How low is too low?

What's the next step?  Double check all voltages on the AR2 again, and test for continuity from the edge connector to the harness?

Thanks,
Wade

RayB:
11.8 is fine. It's used for audio anyways (AFAIK)

When you say the game won't start up, is this with the test mode switch on or off? (just asking in case you had a blonde moment and didn't switch it off)

Wade:
This is with the switch off.  When it is on, I get the static, a low beep then a high beep, which if I'm understanding the manual correctly, means everything is a-okay.

Wade

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