Archived from groups: rec.games.pinball (
More info?)
Put the game in test mode to switches and take balls out see if the trough
switches all activate, chances are one of them does not, if that is case
then one of the ground wires or the switch input wire or diode is not
connected on the switch. If none of them activated then the battery holder
has leaked to the board and if you pull the cpu chip below the holder the
socket will be green or blue probably, you will have to replace the socket
and clean the legs of the cpu chip probably still good just use a razor to
get the green off. Neutralize acid on board after getting as much off as
possible using a small file or the fiberglass pens or small wire brush then
neutralize with white vinegar for like 20 or 30 mins then wash off with
rubbing alcohol, I usually leave alcohol on for like 15 mins and brush it in
good with an old toothbrush. If real bad make sure you take traces down to
copper for 40 pin on cpu so solder flows through, maybe use machine socket
and leave standing slightly higher than normal so you can get the iron on
the top side if need to fix a trace or run jumper. Hope that is enough to
help you out. Sometimes the acid will be further down the board or over to
the eproms, pull the chips and make sure it did not get that far, I emailed
you as well, you know who.
Trin
"Larry" <lmagrie2@comcast.net> wrote in message
news:3fqdnUDWx7cZ3XHfRVn-pA@comcast.com...
>i just picked up a data east monday nite football. it powers up and says
> adjust reset and if i open the coin door it boots up but if i hit the
> start
> button it says ball missing but there is three loaded. thats as far as i
> got
> on this one anyone know what i am suppost to look for on this? any help
> would be great
>
>
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