Re: Tempest High Score Save Troubles

Cold solder joint(s) again? :-)

No, seriously, cold solder joint again.

The board interconnect harness connectors on both boards are notorious.
Reflow them.

Also, IIRC the EAROM runs on some wacky voltage that's developed on the aux
board. Make sure it's correct.

As far as "Places to start looking", search the archives (www.vectorlist.org
)

Thanks,
-Mark

On Fri, Mar 25, 2011 at 12:50 AM, Malcolm Mackenzie
<maxstang@sbcglobal.net>wrote:

> My Tempest is no longer saving high scores. No "E" in self test, but I
> switched out the ER-2055 at C2 with a new one anyway, with no change.
> Metered the chip and it's getting +4.87V at pin 6 and -30V at pin 14. I
> also checked the resistors near by and they all test good. Any good places
> to start looking?
>

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Received on Fri Mar 25 12:21:28 2011