Re: newbie - Battlezone problems.

You will now need a logic probe and some electronics skills. Unfortunatly
this sounds like a locked up board. With a logic probe check the CPU IC for
signs of Clock, pulsing Reset, NMI pulsing (I think on this board), and
presence of pulses on all the data and most of the address lines. You have
tried re-seating all of the socketed ICs already, haven't you? Have you
schematics of the logic board?

John :-#)#

At 01:15 PM 2/6/2000 +0000, you wrote:
> >UNPLUG THE MONITOR. XY monitors can DIE if they are
> >run with defective boards or power supply.
>
>OK I did that. I didn't realise I could kill the monitor but I didn't
>think that bright dot in the middle of the screen would do it much good.
>
>I get no game sounds and no coinup sound.
>
> >Now check the voltages, safely.
>
>All voltages appear correct
> >>I checked the voltages on the regulator board and all the test points
> >>appear to give the correct value.
> >>
> >>The larger logic board has the +5 LED lit but on the smaller board the
> >>+5v LED is NOT lighting. I checked the voltages on the test points on
> >>this board and it does appear to be receiving +5v (4.8v or so on the
> >>test point close to the led).
>
>--
>
> >If voltages are all OK, then put the game into self test (switch should
> >either be on coin door or beside volume control) listen for the self test
> >beeps etc as described in the manual.
>
>Right - I did this and I get no beeps. I also checked that the volume
>pot wasn't turned down.
> >
> >Call Vectorlist after these tests are done for more help....
>--
>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.
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  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
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Received on Sun Feb 6 15:00:51 2000