I'm guessing there is a simple explanation for this. Any tips would be gratefully appreciated.
(Topic ID: 295127)
Boulder, CO
Quoted from HowardR:The switch on the Game Over relay (Q) with a Red+White wire on one terminal and a Red-Yellow wire on the other is responsible for disabling the flippers and other things. It's at 13i on the schematic.
Quoted from n2012y:Upon further review... the Q relay is remaining energized.
Did you look at the switch I mentioned?
Quoted from n2012y:I did. It's a make switch that is closed when Q is energized. I must be getting something wrong.
That's different from what I'm seeing on the schematic. Gottlieb schematics are drawn with the game reset and unplugged, implying Q should be de-energized in this picture.
pasted_image (resized).pngOK. I carefully checked the relay. The switch is a break switch, so when energized it is not closed, just like the schematic indicates. The Q relay fires, the switch (with the red+white wire) opens and... the flippers are still energized. I actually placed a non conductive strip in the switch and checked for a short at or near the switch. Thanks to you and several other forum members I'm starting to parse schematics, but I seem to be missing something on this one.
Usually a normally closed switch on the hold relay pulses the game over relay when powering on. Check switch that it opens when hold relay pulls in.
- After the last player's last ball drains, the Coin Unit should count down to 0 (to award match replays).
- When the Coin Unit reaches 0, that should energize the Game Over relay (Q).
- When Q energizes, that should open the switch we've been talking about,
- Which should disable the flippers etc.
I think the challenge is that the Q switch is open at the end of the game and the flippers are still energized. Here's a question: After I turn on the power, but before I press start, both the game over (Q) and 1st ball (U) relays are energized. Does that sound right?
Quoted from n2012y:After I turn on the power, but before I press start, both the game over (Q) and 1st ball (U) relays are energized. Does that sound right?
That's correct behavior
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