Re: Atari Tempest issue

From: Elliot Braun <elliotsphone_at_gmail.com>
Date: Fri May 11 2012 - 00:07:13 EDT

Yes I have done that twice... Thanks for the suggestion though.

Thanks,

Elliot

On Thu, May 10, 2012 at 1:14 PM, Rodger Boots <rlboots2@gmail.com> wrote:

> You keep talking about edge connectors, the usual problem on tempest is
> the ribbon cable connectors between the main and aux boards. Where the
> pins are soldered to the boards develop very hard to see cracks in the
> solder. Usual fix is to wick off the solder and resolder with 63-37 solder
> (Radio Shack calls it "high-tech" solder)---best done with the ribbon cable
> removed. 63-37 has a high resistance to cold solder joints.
>
>
> On Wed, May 9, 2012 at 11:48 PM, Elliot Braun <elliotsphone@gmail.com>wrote:
>
>> Ok, here is the latest.
>>
>> I re-did the interconnect and did a continuity test and all is well. I
>> re-did the connector on the aux board (blade connector that attaches to
>> side of the PCB) with all new crimp on ends.
>>
>> Voltages on Aux are: +22 is +23.6 -22 is -23.5 +5 is +5.06 -5 is -5.06
>> Voltages on main board are same +-.01
>> Voltages on Audio board are same +- .01
>> all voltages taken from the loop lugs
>>
>> Here is a strange thing: if I disconnect the edge connector on the aux
>> board the game fires up in to a semi demo mode, full color but things seem
>> to be missing.
>> When connected it is same old thing, in test mode EPQM is up no response
>> to spinner. In normal mode spot killer activates.
>>
>> I am thinking a new aux board may help but it seems so strange that
>> everything is out on the aux!
>>
>> Is the 23.5 voltage the cause? If so how do I fix it?
>>
>> Thank you all for the help so far. Hopefully soon I can try to avoid the
>> spikes again!
>>
>> Thanks,
>>
>> Elliot
>>
>>
>>
>> On Tue, May 8, 2012 at 5:28 PM, Matt J. McCullar <mccullar@flash.net>wrote:
>>
>>> **
>>> All those letters make me think that the CPU board believes the
>>> Auxiliary board isn't connected. Make SURE the Aux board is getting +5
>>> volts. Reseat all the socketed chips on the Aux board (as in, pull them
>>> out, clean contacts, reinstall them). Clean contacts on edge connectors
>>> with an eraser. Reseat the Molex connectors on the Reg/Audio II board.
>>> (Also reseat all the EPROMs on the CPU board.)
>>>
>>> Avoid spikes!
>>>
>>> Matt J. McCullar
>>> Fort Worth, TX
>>>
>>>
>>
>>
>

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Received on Fri May 11 00:07:47 2012

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