Eightball Deluxe help

Mizzou

Well-known member
Joined
May 20, 2012
Messages
1,750
Reaction score
74
Location
Virginia
So I have a new issue with the EBD. The game boots up fine, but wont play. IE No flippers or bumpers or anything of that nature works. Lights are all on and sounds are fine, just no game play. I think I traced it back to the fuse that is connected to the main power transformer. In the past I could just pop out the fuse and put it back in and everything would work fine. The problem started becoming more and more persistent and now pulling out the fuse and putting it back in no longer works. I dont think its a blown fuse because if you simply remove the fuse the machine wont even boot. Any ideas?
 
Any particular place you would suggest to start looking for the cold solder joints at?
 
Did you check the 1A fuse on the playfield? That will cause the flippers and bumpers not to work.
 
I always start Ballys buy checking the voltages at all the test points on the power (rectifier), soleniod driver board and MPU. If everything is good then move on but usually something is a miss and you have a starting point go looking. I even run all the TPs on working Ballys that I get just to make sure nothing is far from normal.
 
Ha! It is a little....challenging...but oh well. Gives me something to tinker with. It also has been a great learning experience on how to work on pins..besides it isnt nearly as bad as my APB...


my God that game is cursed. It's been nothing but trouble since you bought it from me man! Argh! :(
 
think I found the culprit

Sooo....I finally got around to getting a look at the solenoid driver...I believe I have found the issue...


looks like it got nice and fried. Don't know how it happened, but it looks like it may be time to order a replacement board. I'm guessing this one looks to be shot.
 

Attachments

  • 2012-10-29 14.53.00.jpg
    2012-10-29 14.53.00.jpg
    92 KB · Views: 23
  • 2012-10-29 14.52.37.jpg
    2012-10-29 14.52.37.jpg
    94.1 KB · Views: 23
  • 2012-10-29 14.52.48.jpg
    2012-10-29 14.52.48.jpg
    96.9 KB · Views: 19
Last edited:
NA a good wash and scrape down then a good rebuild and it will be just fine.

i have repaired worse on a K7000 chassis and a 4900.

the K7000 had a hole in it bigger than a nickel around the horizontal yoke pins
and the connector on the chassis for the yoke was burnt in half.

and the 4900 had a corner completely broken off and a dime sized hole in it along the 130v rail.

Peace
Buffett
 
Once you fix the board, sit down and figure out why that transistor is going to hell. It looks like the previous owner already did a similar repair based on the shady soldering. At a minimum inspect the coil and check it's impedance, there's a good chance the coil is shot or wrong. Alternatively it could be locking on
 
Ordered a new board and got it in. The only thing is I'm a little hesitant to hook it up. I don't know what caused the old one to fry and don't want to destroy a brand new board. I couldn't find any issues anywhere else on the machine though, so I don't know....
 
Your problem is that you keep ignoring the problem and focusing on the symptoms.

When you have a fuse that keeps blowing, that is telling you it is doing its job and protecting something upstream of it that is drawing too much current and blowing the fuse.

Look upstream, the fuse is the symptom, not the cause. Same thing at your SBD. Those resistors and transistor burned up because whatever they are driving is pulling to much juice.

Putting your new board in without fixing the upstream problem will just fry your new board.

It sounds like you've got a coil, switch or wire that is shorted out and pulling all that juice.

Follow the circuit from the cooked transistor on your SDB and fix the problem.....not the symptom.

--Rich
 
Back
Top Bottom