Re: Tempest resets at specific point in attract

From: Rodger Boots <rlboots2_at_gmail.com>
Date: Fri Jul 06 2012 - 13:54:55 EDT

Make sure power supply voltages are solid. You might have one drooping and
causing resets.
On Jul 6, 2012 12:36 PM, "Andre" <livnfree_can@yahoo.com> wrote:

> ** Yes I do.. will try those out.
> Thanks!
> --
> Sent from my Android phone.
>
> Kevin Moore <talon.k@gmail.com> wrote:
>>
>> You don't have any spare Alu chips do you? the 2901's. You could try
>> swapping them out one at a time, and see if it's a math chip causing the
>> fault.
>>
>>
>> On Fri, Jul 6, 2012 at 11:56 AM, andre <livnfree_can@yahoo.com> wrote:
>>
>>> Swapped the 1495's back in.. Verified one was dead in Y in socket
>>> closest to inside of pcb. Symptom was the entire image shifted down a half
>>> a screen when the dead one was put in the socket.
>>> voltages tested and solid.
>>> Took board back and re-soldered the connector pins for the wire harness,
>>> checked and verified continuity across the installed loom. It seemed to run
>>> ok when I first put boardset back in. I let it run again while doing other
>>> things and thought it might be solved. Went back after 10-15 minutes and it
>>> was doing the same resetting on the 'Tempest' screen. The clicking I
>>> verified as both coin counters counting 1 credit when it resets.
>>> Took board out and socketed the dac08. Grabbed a new one and put in
>>> socket, went back to storage to test it out. It does the same thing but
>>> started the reset immediately in the attract cycle and resets when the word
>>> 'tempest' is still very small. Usually it would take a few mintues running
>>> fine before it would start to reset. This time though when it resets it
>>> seems to let out a loud squawk like a partial low rom tone when it
>>> resets... every time. Old DAC-08 back in socket does the same thing.
>>> No chips are overly hot, or more than usual, as I thought before that
>>> the fact it took a while to start resetting might be thermal related.
>>>
>>> *From:* Kevin Moore <talon.k@gmail.com>
>>> *To:* vectorlist@vectorlist.org
>>> *Sent:* Thursday, June 28, 2012 8:30:22 AM
>>> *Subject:* Re: VECTOR: Tempest resets at specific point in attract
>>>
>>> That tempest text is generally a bad Dac08
>>>
>>> Kevin
>>>
>>>
>>> On Thu, Jun 28, 2012 at 8:35 AM, Andre <livnfree_can@yahoo.com> wrote:
>>>
>>> Have a tempest pcb that played blind in a working cab. Found a couple
>>> pins touching between a cap and resistor by the y 1495's. Pulled the legs
>>> apart and screen came up, but entire image shifted half off bottom of
>>> screen. One of the 1495's was dead. Replaced and seems to work fine...
>>> but...
>>>
>>> In attract mode it does an odd thing. Everything looks ok until it gets
>>> to the screen where the word 'tempest' comes towards you. The roman
>>> numerals in front of the word 'atari' fade out to black, but the word atari
>>> is fine. When the word 'tempest' zooms towards you, the word trails do not
>>> fade out but stay on the screen so the entire mass of tempest words start
>>> to ripple severely.. by ripple its not a physical monitor ripple but a fade
>>> to black ripple.. actually looks like the ripple effect you see when you
>>> try and film or take a picture (the camera viewfinder image) of a running
>>> crt, but way worse.
>>> As I let it cycle a couple times through attract watching what it did,
>>> it eventually just would reset when the tempest words shot out about 1/3 of
>>> the way. There is a coin door click and the attract is starting over
>>> instantly. Its not monitor or cab as works fine with original boardset. Any
>>> ideas?
>>> --
>>> Sent from my Android phone.
>>>
>>>
>>>
>>>
>>>
>>

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Fri Jul 6 13:55:10 2012

This archive was generated by hypermail 2.1.8 : Fri Jul 06 2012 - 19:50:00 EDT