Re: 70's Midway board problem

From: Kev <mowerman_at_erols.com>
Date: Tue Apr 23 2002 - 18:51:39 EDT

Fluke questions are probably better asked on the TechToolslist.

Bit 12 but what address?

Do you have a known good ram that you could piggyback on the suspected bad
ram & run the test?

> Hi there. You can tell when I'm having a party coming up when I ask all
> kinds of 'fixit' questions so I hope nobody minds.
>
> I'm working on a Midway Double Play (1977) that has an intermittant ram
> problem. Using the Fluke 9010a troubleshooter - I'm finding a problem
> at bit 12. This is probably a really basic question, but how do I
> determine which chips correspond with bit 12?
>
> There are 16 2107B chips on the board.
>
>
> Bit0 - Bit0
> Bit1 - Bit1
> Bit2 - Bit2
> Bit3 - Bit3
> Bit4 - Bit4
> Bit5 - Bit5
> Bit6 - Bit6
> Bit7 - Bit7
>
> Thanks.
>
>
> Matt
>
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Received on Tue Apr 23 15:55:05 2002

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