Questions about my Gorgar

kaz1961

Active member
Joined
Jul 23, 2005
Messages
1,196
Reaction score
19
Location
Walworth, New York
Picked up a semi working Gorgar and want to get some opinions on what it might need. The game starts up but has some issues. A few of the coils dont fire but I can get them to fire by grounding them out on the solenoid board. The one drop target bank has the coil wires disconnected but the coil does not seem burned out. The boards all look clean with no battery damage. Sound does not work at all. I'm guessing I have a solenoid board issue. What do you think. Could also use the small plastic that is in front of the pop bumpers if someone has one to sell or trade.
 
I forget, where in NY are you located?

The sound, does it do anything if you hit the test button on the sound board? I assume you've already checked the volume control in the cabinet.

The disconnected coil, what's the resistance across the lugs?

-Hans
 
I am in Miller Place on Long Island. Volume is up and I get nothing when I push the test button. I will check the resistance after work today.
 
check the connector between the 2 boards, missing data lines can cause some coils not to work..
 
The resistance between the lugs is 4.2, the same as the other coils so I assume that the coil is good.
 
Played with the game and have made some progress. I reseated the connectors on the boards and did a factory reset. Some of the coils that were not working are now working and so is the sound. The ball eject is not working during gameplay but I can get it to fire by grounding it at the board. The coil on the "gor" drops is not burnt and has a resistance of 4.2 so I resoldered the wires back onto the lugs but still nothing and I cant get this one to fire by grounding the solenoid board. Any thoughts?
 
Played with the game and have made some progress. I reseated the connectors on the boards and did a factory reset. Some of the coils that were not working are now working and so is the sound. The ball eject is not working during gameplay but I can get it to fire by grounding it at the board. The coil on the "gor" drops is not burnt and has a resistance of 4.2 so I resoldered the wires back onto the lugs but still nothing and I cant get this one to fire by grounding the solenoid board. Any thoughts?

Well, the first thing to say is that reseating boards and connectors is only a temporary fix, you'll need that 40pin interboard connector re-done at some point. How's your soldering?

Also, you'll be best served by snagging a good crimper and a bunch of .156 molex 9 pin connectors..... replace all of them on the wiring harness going into the solenoid and switch matrix sections of the driver board.

Have you run through the solenoid test sequence in the diagnostics? What about the switch test sequence? I'd run through there and check every coil and switch.

-Hans
 
Not a great solderer, I'm pretty good with a crimper and will replace those connectors. Ran through the tests. The switch test showed no problems. The solenoid test fired all the coils except the ones I am having a problem with, sol 1 ball release, and sol 3 GAR drop target reset. You think it is a solenoid board problem with those 2?
 
Not a great solderer, I'm pretty good with a crimper and will replace those connectors. Ran through the tests. The switch test showed no problems. The solenoid test fired all the coils except the ones I am having a problem with, sol 1 ball release, and sol 3 GAR drop target reset. You think it is a solenoid board problem with those 2?

Either wiring or the driver board. Like the other guy said, check to see if you have voltage at the coils. Then, with the game off, check the continuity from the coils to the connectors. The ball release is likely a board problem if you can manually fire it from the TIP120.

The drop targets, could go either way. Could also be a bad coil diode. Does it move freely if you manually try to move the plunger in the coil?

-Hans
 
30-32 vdc on both coils. The plunger on the drops coil moves easily. Checks positive for continuity from both coils to the connector on the driver board.
 
Last edited:
30-32 vdc on both coils. The plunger on the drops coil moves easily. Checks positive for continuity from both coils to the connector on the driver board.

Yeah, leaning toward a driver board problem.

Normally, at this point, I'd be trying to convince you to hand over the boards so I could get them fixed up for you...... but I'm going to be busy as hell the next week and a half due to a few things, and wouldn't be able to get them back to you in my normal timely manner.

-Hans
 
Back
Top Bottom