Set up for 1 ball game by chance?? Just guessing.

So if a ball drains it just sits there? Does it count up end of ball bonus?

I have worked a lot with my old Gorgar and there was a lot that was broken so I hope I can help.

Does it work when the machine is cool?
One of my problems was that after 15 min the game started to act strange. Coils not working and sound disappearing. It was a heat issue that was easy to fix.

I can't remember, but are there a switch checking if there is any ball there?

Is the switch registering in switch edge test?

When the ball drains, does the machine score your bonus and move to the next player? If not, I would loo at the trough switches to make sure they are registering (the machine may not be detecting the ball drained). If so, I would check the shooter lane switch (the machine may think there is already a ball in the shooter lane).

Sounds like the switch in the ball trough that registers that the ball has drained is not working. With the machine off, lift the playfield and support with the prop rod. Roll the ball back and forth in the trough and find the switch that registers that it is in the trough. First visually inspect the contact points on the switch to make sure they are pressing together when the ball rolls to the end of the trough and opening when the ball is not in the trough. If they are not making sold contact, gently bend the leaf switches to the contact points are open when the ball is not in the trough and closed when the ball is in the trough. There will be less than 1/16" gap between the contacts when the ball is not in the trough and switch is open.

If they are already making contact, they are probably just dirty. NEVER use abrasives of chemicals to clean these types of contacts, they only have a thin layer of gold plating on them and you can end up filing through the plating. All you need to do is sandwich a business card or a piece of cardstock (or a crisp dollar bill) between the contact points, gently push the contact points together and pull the paper out. Do this 2-3 times until the paper comes out basically clean.The paper rubbing on the contact points will safely clean the oxidation and dirt from the contact points.

The standard switch diode is the 1N4004 but if you are buying them, I would get the 1N4007. The 1N004 is rated at 400V peak inverse voltage and the 1N4007 is rated at 1000V but cost the same. You can get 20 of either at GPE for $1. The extra voltage rating is useless in the switch and lamp matrix but is extra insurance on the coil diodes. If you want to source them locally and can't find the 1N4007, the more common 1N4004 is just fine in most areas of a pinball machine.

I would recommend getting 20-100 of them as they are used all over pinball machines (coil, switch and lamp matrix, some places on the boards too).

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