Re: Asteroids board - No X or Y signal, what else could it be??

umm is your meter ok?

that should be closer to :
+15, -15, +5, +6.8, -6.8

Andy Welburn
www.andys-arcade.com

----- Original Message -----
From: <MKDUD@aol.com>
To: <vectorlist@synthcom.com>
Sent: Thursday, April 03, 2003 5:44 PM
Subject: VECTOR: Asteroids board - No X or Y signal, what else could it be??

> Hello,
>
> I've got an Asteroids board (rev2) board that I have no signal from
> either x or Y output. I am losing the signal through both 4016's (B12 &
D12)
> between pins 1&2 and 11&10. I have replaced ALL TLO81's, TLO82's, both
> 4016's, and both AD561J dacs with tested good ones. The Z output signal
looks
> normal, as does SHCON. All voltages are good - +16.47, -16.04, +5.45,
+8.27,
> -8.24. What could be causing me to lose signal between pins 1& 2 and 11&
12
> of BOTH 4016's??
> Data on pins 4-13 of both AD561J's look fine, as do their outputs.I
am
> really stuck here - I have no idea what to check next. Please help if you
> can
>
> Thanks,
> Michael Kelley
>

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Received on Thu Apr 3 11:03:53 2003