Eight Ball Deluxe
Bally, 1981Hi all
Working on an eight ball deluxe. The game turns on fine and i do get 7 flashes on the mpu. It will accept coins and shows credits. When i push the start button, nothing happens. I do see that the transistor for the coin lock out is bad and the coil stays on. I was wondering if that could cause the issue or if there was something else. I have tried to start the game with and without a ball in it as well.
Thanks
Make sure the solenoid expander has a bulb installed near it. The outhole is on the expanded circuit.
Quoted from busa32927:what does that look like and where is it located
Under the playfield. It needs to have an incandescent bulb installed. NO LEDS! ask me how i know 
390bfcccc57e8c624c908a972e5242a7280aee13 (resized).jpgOn that note, since it boots into attract and credits up, I would suspect the start switch. If the game starts and the outhole doesn't kick, then there might be a problem with the outhole switch or solenoid, but it doesn't sound like it starts a game at all, so I would check the Start switch and wiring.
hi all
thanks for you help. after digging through the manual i figured out how to get into the switch test. the start button leaf switch was not working correctly. I should have did that first. Thanks for the information as well as that will help with future projects.
So the start switch does absolutely nothing? Or it does the fanfare of a game start but just doesn't serve the ball? Only if it does the latter would that SEB board be a suspect, otherwise a switch issue with the switch or it's wiring, diode, its wires going to the head, etc.
Quoted from busa32927:the start button doesnt start a game consistantly. there are enough credits. when you press the button nothing happends. has new switch and diode on it.
Are you looking at the switch with the playfield up when starting a game to make sure the switch is making contact and properly adjusted?
Is the game recognizing there is a ball in the trough consistently?
Quoted from grantopia:Is the game recognizing there is a ball in the trough consistently?
That is completely immaterial on EBD it does not look for the outhole switch being closed to be able to start a game.
Quoted from busa32927:out hole switch works fine as i tested it during the switch test. i tested it manually and with a ball in the hole. i also tested the start button switch using the switch test and it is intermittent and now doesnt respond.
Intermittent during switch test?
Get a DMM and set it to continuity and confirm that the switch is making good contact (game off). If it is, then check the connector and header pins that the switch runs to. I'll have to look in the manual, but if you haven't reflowed solder to any of the header pins on the MPU, it could be a cold/cracked solder joint.
But check that the physical switch is good first (likely it is if it's new).
I would suggest if you have not gone through any of the header pins yet, to at the very least reflow solder to them.
You have 2 separate issues.
Lets deal with the game start first.
You need to put the game in switch test and get the start button registering. It sounds like the button is not adjusted correctly. If pressing the button does not list the correct number on the displays you have a bad adjustment or loose wire. Also make sure the paper or plastic insulator is intact. There should be no electrical connection to the button itself.
The Solenoid Expander has no connection with the switches. In the photo above it shows the wiring has been hacked and needs to be repaired with new KK .156 crimps and a new shell. A bad SE board will cause numerous coil fails.
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Cocoa, FL