Re: Dead Atari Food Fight - ALIVE! Now for the dead monitor...

Ricardo, mi amigo, it's BNC for sure. Yes BNC connectors were used on
monitors as well as the ol' token ring networks. They were used
for.... (drum roll) CCTV in the old days :) I could snap a pic when I
get off work today for all to see.

Cliffy
A passion for pinball!
www.passionforpinball.com


On Aug 27, 10:15 am, someotherguy
<someotherguy@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
HeyCliffy, you sure that's a BNC, not an RCA? Like maybe that monitor came out
of a laser game?

Richard



On Sun, 26 Aug 2007 21:32:23 -0700,Cliffy<Cli...@xxxxxxxxxxx> wrote:
You're right Brien it's not a lost cause! I swapped the 4 sram sockets,
removed all the corrosion from both sides of the board and soldered in
new sipp sockets. It worked! It's playing blind but by golly I'm
surprised how tough those AMD srams are.

Now I'm trying to get some life out of the monitor and it's a weird one.
It's a Wells Gardner 19k4921. Never saw one of these EVER! The board
looks just like any 4900 series but there is a separate small PC board
mounted to the side of the frame with it's own rgb inputs and a BNC
connector? What the??? Nothing is plugged into it but there is a
separate rgbhvs connector hanging there that's been tapped into various
points on the main PCB. Anyway, not worried about that too much. It's
obviously for some other kind of input. Right now I'm worried that's I'm
getting no B+ at R503 and nothing at the opposite end of R503 either.
Randy's flow chart says to check R601 but I'll be damned if I can even
find that resistor anywhere on the board. In fact there are NO R6xx
resistors anywhere! Lots of R2xx, 3xx and 7xx resistors but no 6xx that
I can see!

Thanks for the encouragement, Brien, and if you or anyone has any ideas
on this monitor do let us all know here. Thanks again!

Brien King wrote:
Doesn't sound like a lost cause yet :-)

The 12V might be ok if it's unregulated. If it's regulated and is
supposed to be 10.3, then you might have a problem.
I would start by checking the voltages to different places on the board
and make sure you are getting good readings. Since you pulled the RAMS,
I would double check them as well. Make sure a leg didn't get bent out
of the socket or a leg didn't fall off.

Since you have corrosion, you'll want to check other socketed chips as
well.

If you coin up the game, does it make any sounds or does the Start
button Light at that point?

You should also be able to find the documentation to Food Fight here:

http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Food_Fight/

Brien King
spammeh...@xxxxxxxxxxxxxxxxxxxxx
http://www.arcaderestoration.com

C> Picked up an otherwise nice Food Fight but it's not booting or even
C> giving me LED codes and no screen at all.
C> C> According to the fellow I got it from it worked fine until the
C> monitor developed a roll, no biggie but he was tired of it so I
C> acquired it. We tried to fire it up but nada. No sounds, just a
C> couple flickers from the start button led's. So I took her home,
C> pulled the back off and pulled the game board out of its cage. Upon
C> doing that I noticed corrosion both in the bottom of the cage and on
C> the board along the bottom where the rams are, all the way up to
C> about the C line.
C> C> I carefully pulled the rams and cleaned the legs with a fiberglass
C> brush and set them aside. I cleaned the sockets as best I could and
C> then checked the traces to the sockets, all good. Popped the ram back
C> in and installed the board and now I don't even get a start button
C> led to light! Only the led on the board lights and it stays locked on
C> from power up.
C> C> I checked the ARII board and voltages look ok to me but not sure how
C> dead on the need to be. Example, 10.3 is reading about 12 while 5 is
C> on at 5.0.
C> C> Where do I start? Is it a lost cause? Are there any Atari board
C> repair guys out there still? Any help, tips and pointers appreciated!
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