Went on a road trip with a friend yesterday and unexpectedly came home with a HH. So in the club now . I won't lie - i have zero experience with Gottlieb system 80 (or any system Gottliebs lol). Overall it looks good - not much pf wear and has new plastics. Couldn't get a game to start but apparently was working recently. There was a new mpu installed at some point. Got some pinwiki-ing to do now. But from what i recall the edge connectors should be looked after first and make sure the ground mods are done (and done correctly as i see some are there).

Looks like they are originals. I set it up tonight and got a better look inside. MPU is original, its the driver board that had been replaced. Definetly needs some connector attention. I tugged on a couple suspect wires and they came right out of the housing. Not exactly shiny either so i think its the best place to start.

Found an unnecessary credit button added to the front - rather than the jumper on the diode board. But somthing was done to the power switch wiring which i havent looked into yet. Baby steps lol

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Pulled the mpu and used a pink pencil eraser on the edge connectors and voila. Game is alive and plays. Lots of small issues to correct like some switches not scoring and an upkicker thats not upkicking.

Are there replacement edge connector housings that people use? And are there molex equivalents that use crimp contacts or are they just IDC’s?

Ok so i’m almost done bringing a friends HH back from the dead. Was not booting but worked through that and now it plays 100%. Hurrah.

The only the not working is the playfield GI. lightboard lights work as do the coin door lights. But non of the 3 playfields have GI.

Fuse F6 in the cab is fine (tested out of circuit). I have correct voltage at A12J4, A12J8 which according to the schematics (page 41) is where i should find it.

This seems like it should be simple - am i missing something? I dont see a GI relay or anything like that. Maybe the terminals in the wire harness connector aren’t making good contact? I would think a broken wire on a playfield wouldn’t affect all 3....

Wasn’t looking hard enough. Think this may have something to do with it...

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Wow its been 3 months and just now looking to find a replacement switch. But i don’t know the part number for the switch and/or switch blade i need. Only the relay part number is listed in the manual. Is there is a gottlieb parts manual for this era of game? If so i know i don’t have it.

Anyone have a ref number for this part? The outermost make/break switch on the U relay.

Thx.

too-many-pins sent me the correct switch and we have light again. Happy day