Re: Asteroids Deluxe board broblems.

This sounds all too familiar.. This is a problem with the DVG :( You can verify this by following the steps described in the Asteroids Repair FAQ. It talks about pulling and socketing a chip and bending a pin out effectively disabling the main CPU from waiting on the DVG. At this point you will be able to play the game blind.

 From here, it starts to suck tracking down the problem. You'll basically need to check everything. One thing I was able to do was turn the machine on in test mode (with the watchdog disabled) then flip it into game mode. This would let me play the game with bogus characters all over the screen. Fwiw, my problem turned out to be a bad counter.

Jon

At 12:31 AM 5/26/2000 +0100, you wrote:
>can anyone help me with this Asteroids Deluxe pcb?
>
>When powered up the board LED lights and the player1 button lights up
>but flickers every half second - no picture no sound no response of any
>kind.
>
>in test mode it produces a continual 'beep - beep - beep' sound and the
>player start button lights continually.
>
>If I ground the watchdog it produces a continual 'beeeeeeeeeeep' sound.
>
>I tried a known good 6502 - no good.
>
>what next?
>
>is it worth having someone make up a replacement rom at N/P2 and J1?
>--
>James G Watt
>
>http://www.kinetic-arts.demon.co.uk
>Part of the Video Arcade Game Collectors WebRing.
>
>You are in a maze of twisty little passages, all alike.
>---------------------------------------------------------------------------
>** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
>** message body to vectorlist-request@synthcom.com. Please direct other
>** questions, comments, or problems to neil@synthcom.com.

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Fri May 26 09:01:29 2000