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TECH: Asteroids ARII board

 
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Chuk

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Since: Feb 13, 2005
Posts: 431



(Msg. 1) Posted: Wed Mar 08, 2006 6:52 pm
Post subject: TECH: Asteroids ARII board
Archived from groups: rec>games>video>arcade>collecting (more info?)

I have an ARII board that was putting out +12 on the +5. I rebuilt it with
the bob roberts kit, and now I get +5 on the +5. However, the game won't
come up, and the red LED is not lit on the PCB. Swapping in a known good
ARII board, and it works fine. What else to check?

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Chuk

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Since: Feb 13, 2005
Posts: 431



(Msg. 2) Posted: Wed Mar 08, 2006 6:58 pm
Post subject: Re: Asteroids ARII board [Login to view extended thread Info.]
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oops, make that an ARI board.

"Chuk" <chuk.RemoveThis@ourcade.com> wrote in message
news:53KPf.1407$fg7.848@fe21.usenetserver.com...
>I have an ARII board that was putting out +12 on the +5. I rebuilt it with
>the bob roberts kit, and now I get +5 on the +5. However, the game won't
>come up, and the red LED is not lit on the PCB. Swapping in a known good
>ARII board, and it works fine. What else to check?
>
>

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jbuck

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Since: Jan 04, 2006
Posts: 45



(Msg. 3) Posted: Thu Mar 09, 2006 8:07 am
Post subject: Re: TECH: Asteroids ARII board [Login to view extended thread Info.]
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Have you poked around the board with your DMM?
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SchifWare

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Since: Sep 25, 2005
Posts: 18



(Msg. 4) Posted: Thu Mar 09, 2006 8:55 am
Post subject: Re: TECH: Asteroids ARII board [Login to view extended thread Info.]
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Hey Chuk,
BTW - I had a voltage regulator go on my ARII which caused a similar
prob. If the BR kit included one (7805?), then that's probably what
got you back to +5. If not, I'd meter around those to see if they're
doing their job.
-Chuck
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Chuk

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Since: Feb 13, 2005
Posts: 431



(Msg. 5) Posted: Thu Mar 09, 2006 9:25 pm
Post subject: Re: Asteroids ARII board [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

I had been testing the +5 on the AR board, not the game board. When I
replaced the 2N3055, the solder created a "moat" around one of the pins.
There was plenty of solder there, but none of it was actually touching the
pin. Gobbed some more on, and all is well.

"Chuk" <chuk.DeleteThis@ourcade.com> wrote in message
news:53KPf.1407$fg7.848@fe21.usenetserver.com...
>I have an ARII board that was putting out +12 on the +5. I rebuilt it with
>the bob roberts kit, and now I get +5 on the +5. However, the game won't
>come up, and the red LED is not lit on the PCB. Swapping in a known good
>ARII board, and it works fine. What else to check?
>
>
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SchifWare

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Since: Sep 25, 2005
Posts: 18



(Msg. 6) Posted: Mon Mar 13, 2006 6:04 pm
Post subject: Re: Asteroids ARII board [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Glad to hear it!

>> There was plenty of solder there, but none of it was actually touching the pin.

-Since that's happened to me from time to time, does anyone have a good
way to clean off(?) components that don't tend to attract the solder -
avoiding the prob. that Chuk had above?
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dgfinck

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Since: Jul 28, 2005
Posts: 52



(Msg. 7) Posted: Mon Mar 13, 2006 6:51 pm
Post subject: Re: Asteroids ARII board [Login to view extended thread Info.]
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Clean the part(s) well... sand, chemically clean if needed, rinse with
alcohol, and dry.
Apply some flux (the paste type).
Make sure you heat the component up enough.
Use flux-core solder.

df
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SchifWare

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Since: Sep 25, 2005
Posts: 18



(Msg. 8) Posted: Mon Mar 13, 2006 8:26 pm
Post subject: Re: Asteroids ARII board [Login to view extended thread Info.]
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Many thanks for the quick follow-up! -Guess I just must not have
cleaned or heated (in fear of over-heating) enough in the past on those
old re-worked components/PCB's. Thanks for the tips!
-Chuck
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