Star Trek: The Next Generation
Williams, 1993Hi,
I have a ST:TNG and it keeps giving me 2 balls at the start. Sometimes it gives one an d then suddenly it sais End Ball, while the ball is stil in play. My trough opto boards have both just been replaced and all of it's opto's respond perfectly in test mode. What could be the problem?
gr
Fulko
Balls are potentially getting hung up in the trough (due to pitting, rust, or magnetism).
Try popping one of these in your trough, worked wonders on my Judge Dredd:
http://www.pinbits.com/index.php?main_page=product_info&products_id=449
Quoted from Fulkano:What do you mean with balls loaded? Do you mean to many balls in the machine? I already tried taking one ot to see the effect, but it doesn't matter.
If it's the wiring, shouldn't the opto's fail in the test?
More than likely not an opto issue if they pass in test mode.
Make sure all of the diverter solenoids fire in test. I had something similar and it was a blown fuse.
No, those are not switches. The opto's infront or behind them control when they fire. Sounds like a opto issue. Not sure if when it loads the ball to start a game if it passes over a opto. Clean all your opto's.
Isn't there a switch in the shooter lane? If that isn't registering the game will think the ball didn't plunge from the trough outwards. Check that switch.
Yes there is..
http://robertwinter.com/pinball/restorations/sttng/teardown/69.jpg
Check to see that the switch in the sling arm cup is properly registering every time a ball is in there.
Quoted from Fulkano:result the balls go from the trough to the top of the playfield and back a lot
You need to be removing the balls. Maybe they came back and slammed into/broke the switch Alex is referring to?
You might also want to check the IDC connector to the trough opto boards. Make sure it is clean/seated well, no broken or iffy connections. I had an intermittent problem with my trough where it would spit out two or more balls. The optos worked fine in test, but when monitoring the active switch test and slightly moving the wires on the connector there were false positives being registered.
Quoted from Wolfmarsh:You need to be removing the balls. Maybe they came back and slammed into/broke the switch Alex is referring to?
+10000 Absolutely take the balls out of the game. Considering STTNG is a pre-staging game sticking a towel in the trough isn't enough because there are balls in subways..
Empty the game EVERY time you lift the PF past the service rails.
Thanks for all the input. It gives 2 blls right from the start. So isn't that before the first would reach teh opto in the shooter lane (where is that one located anyway?)?
The last time it gave 3 balls immediately and after that it just continued giving balls.
Quoted from Fulkano:Thanks for all the input. It gives 2 blls right from the start. So isn't that before the first would reach teh opto in the shooter lane?
The last time it gave 3 balls immediately and after that it just continued giving balls.
Absolutely a trough opto problem. Even though you just replaced it, it may be faulty.
Quoted from Fulkano:OK, I'll test the optos again, but it seems all 5 respond perfectly
See my post above. I had this exact same issue, turned out to be the connector. It was intermittent so hard to detect by just triggering the optos.
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Zwaag
Cumming, GA
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