Re: Re: Asteroids Blues

From: Mark Hooks <markhooks_at_earthlink.net>
Date: Mon Sep 25 2006 - 21:56:57 EDT

If you have a solder short or open trace on that new chip it would cause
those symptoms (reset).Get out the magnifier and look for problems.
----- Original Message -----
From: "Robert Gonyer" <arcade-dawg@mchsi.com>
To: <vectorlist@vectorlist.org>
Sent: Friday, May 25, 2007 4:02 PM
Subject: RE: VECTOR: Re: VECTOR: Asteroids Blues

>I didn't socket the new chip (duh). It's possible I damaged something
>while
> soldering, I'm not an expert although I have had good luck in the past.
>
> I'll check the xtal when I get a chance.
>
> Thanks for the suggestions everyone.
>
> -----Original Message-----
> From: owner-vectorlist@vectorlist.org
> [mailto:owner-vectorlist@vectorlist.org] On Behalf Of peter jones
> Sent: Friday, May 25, 2007 2:51 PM
> To: vectorlist@vectorlist.org
> Subject: VECTOR: Re: VECTOR: Asteroids Blues
>
>
> -----Original Message-----
> From: "Robert Gonyer" <arcade-dawg@mchsi.com>
> To: <vectorlist@vectorlist.org>
> Date: Fri, 25 May 2007 12:09:04 -0500
> Subject: VECTOR: Asteroids Blues
>
>>
>> Good thing it's a long weekend so I can forget about my troubles, lol.
>>
>>
>>
>> Board #1 is the one that was buzzing really loudly. I am 100% sure it's
> the
>> board, because another board (that used to work 99%) didn't buzz at all
>> in
>> this cabinet. I replaced all the caps on the board, plugged her in in
>> anticipation that I was gonna get a game in.. and BUZZZZZZZZZ.. I
>> couldn't
>> believe it. Any other ideas?
>>
>>
>>
>> Board #2 is the one that you all helped me find a bad chip using freeze
>> spray. It turned out to be the one directly above the CPU. (74LS245N)
>> Sound like the right part? I know it didn't match the #'s on the
> original,
>> but I figured Bob knew what he was sending me, and it was the right
> pinout.
>> Symptoms before was that the game would play fine for a couple hours,
>> then
>> it was start flaking out as it got warm. Freeze spray to this chip
> brought
>> it back to life. I replaced this chip, now it flakes out constantly,
> won't
>> even come up. Clicking from the coin door, random noises, etc. I have
>> replaced lots of chips before, so I don't THINK I did it wrong, but it is
>> certainly possible. Any other ideas?
>>
> did you damage any tracks when you pulled the 245?
> did you use a good socket?
>
> and check the 2 main problems i find - re-seat the cpu and check the
> soldering on the crystal.
>
> i have about 7 asteroids & similar style (millipede etc) pcb's - none of
> them had an intact crystal when i got them.
> they stick up with a great big invisible neon sign on them "break me!"
> LOL
>
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Received on Fri May 25 21:58:51 2007

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