Hi guys,

I've recently picked up my first pinball machine, a Gottlieb System 80b Tag Team. I know most of the time you're tinkering with some issues here and there which is some of the 'charm' of joining the hobby. I'm waiting on a manual and schematic sheet from Marco, but you know waiting it a horrible thing!!

One thing that is very obvious to me is the yellow grounding wire from the head to the cabinet isn't attached to a screw like the others throughout the machine. I am I right in assuming I should attach this to the screw in the cabinet to continue the yellow ground from the transformer?

Is there a reason why the wire is 'flat' vs. having a 'screw hole'? Also, would this lack of ground effect anything?

Thanks a bunch,

Dave

Ground Wire - Head (resized).jpg

Thanks Peter, super helpful! I've completed the ground modifications from Pinwiki. My slam tilt is working much better now!

I am hunting down why my left out hole coil melted inside with the sleeve. I was thinking it was grounding issue which is why I was wondering about the yellow ground strip. Maybe the pinwiki ground mod would have avoided the melting issue?

Now it could be a driver board transistor but the one in the manual (Q59) doesn't look damaged when I look at it. However, Q53 (Bell Assembly) does look damaged...

Of course... The connectors! I'll grab some connectors and make a new ground.