Re: Tempest

If reseating EPROMS fixes it for a while you probably have either gold pin
chips in tin sockets or vice-versa. I had games that did this weekly
because of this. DON'T mix the metals.
On Jul 11, 2012 3:55 PM, "Kevin Moore" <talon.k@gmail.com> wrote:

> Agreed, if you are having problems that are fixed by re-seating eproms
> every month, then they have most likely lost or are loosing tension. Either
> that or your sockets/ and or eprom legs are corroded or dirty.
>
> I've personally not had any issues with the original gold double wipes,
> but the single wipes they used suck and should always be-replaced.
>
> As for which eproms contain game data, I think it's pretty much spread
> through the majority of them.
>
>
>
> On Wed, Jul 11, 2012 at 3:46 PM, Chuck <chuck@localsurfer.com> wrote:
>
>> I would just replace all the sockets instead of reflowing them. I lot of
>> games had cheap sockets in them that failed over the years. It will drive
>> you crazy chasing things like that again and again. If the interconnect
>> cable is still the IDC connector, I would replace that also. I think Bob
>> Roberts sells a kit for that.
>>
>>
>> On Jul 11, 2012, at 4:19 PM, Robert Bayes wrote:
>>
>> I have a Tempest game that (surprise) has been difficult to keep
>> running. When it fails, I'll pull the boards out, remove all the socketed
>> proms, clean them and the sockets and reseat them and, it'll be good for
>> another month or so. Last time, I was seeking a more permanent solution
>> so I reflowed all the solder connections on the prom sockets and the
>> interboard connectors. It worked for a couple of months but now, it has
>> failed again. I know it's the proms again because the self test works
>> fine. It's just when I switch to game mode that the screen goes blank.
>>
>> Two questions:
>>
>> 1.) I don't have a memory map so could someone suggest to me which proms
>> contain the game software? I don't want to bother those proms that are
>> still working by reseating them again.
>>
>> 2.) Would replacing all the proms help? I mean, besides the external
>> connections do proms actually fail where they become flaky? I've always
>> thought that proms either work or they don't--not that they can only work
>> sometimes.
>>
>> Thanks.
>>
>>
>>
>>
>>
>

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Received on Wed Jul 11 18:37:48 2012