Table run and pit light

[amfpinboy]

This has been a strange week for problems. Tuesday we had to replace a sweep rocker arm assy. and there have been some unusual electrical problems almost everyday. My B mechanic tells me he had to pull a chassis and that I needed to check it out. We put it into another machine to run it. The mach. turns on without a pit light, but the pit light turns on when the table motor runs. The light will also turn on if you pull out on the TA #1 and run the table manually. We did a quick check for trapped wires around the table relay, M relays and fuses. For laughs I un-plugged the table motor and ran the pit light with the TA #1.
The chassis is SS Omega Tek with an expander board. It was after 5 PM and I didn't need the chassis for the weekend, so I packed it away till Monday.
I can't wait to check this out further. I have never seen this problem in over 44 years on 30's and 70's. This should be interesting.

[whizkidmechanic]

Re: Table run and pit light

hey try something for me use your electrical meter and test to see if there is a short to grond on the pit lit wires on the green plug

[misterx]

Re: Table run and pit light

Sounds like you may need an exorcist! [img]/content/btubb/images/%%GRAEMLIN_URL%%/eek.gif[/img]

[Coors]

Re: Table run and pit light

pit light is top row 3rd wire from the right(C1-44S. red wire. gets its power from M relay. id bet that wire got wired to the table relay. and im sure nobody did it!

if not that. gotta M wire crossed or jumping with a T wire

[Lampie]

Re: Table run and pit light

and im sure nobody did it!

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[Andrew]

Re: Table run and pit light

If someone's accidentally wired the table contactor with some wires switched, the pit light output would be on the 'other' side of the table contactor.

Easy test - manually lift (with your fingers) the table contactor (please don't electrocute yourself). If the pit light turns on, then you have two of the NO wires transposed.

Hope that helps. What an "Omen"-type problem though - lol.

Andrew.

[amfpinboy]

Re: Table run and pit light

Thanks guys. I can't wait to look around the chassis. This chassis was in a mach. for a long time. It just started to act up about 4:30, after running all day. Nobody could have played with it while it was running. Strange.

[peapodd@mindspring.com]

Re: Table run and pit light

Perhaps this:
If these other gents suggestions hasn't solved yet...
I remember seein'this many moons ago.
S.S. chassis had some conection problems w/"uppers"on table contactor.
Vaguely remember one corner set of wires loose &amp; carboned up(so it was tough to detect) while one of the other corner sets of wires had a wire that was 'smoked'invisibly under insulation.Evenually flushed out this two-in -on problem.
Look closely as these may be playin ya...
Lettuce be known...

FATTY

[JimDorsin]

Re: Table run and pit light

I have had this (or close to this) problem before. When we encountered it, the pit light would flicker on and off as the table ran. Turned out to be a mossing or loose screw on the front right top table contactor (facing chassis from back of machine) and a wire was loose and arking on and off...

[amfpinboy]

Re: Table run and pit light

OK We tried to install expander boards in a few lanes about two months ago. I have SS chassis's with Omega Tek boards. We had to disconnect the plugs on those expander chassis's (8 lanes) due to many problems. The chassis, in question, had a problem with both boards. I'm out of extra Omega Tec boards so I converted it back to SS. Everything is back to normal.
I hope Omega Tek sends a note back with the repaired board stating what was wrong. They normally do. We'll see.

[TheGMan143]

Re: Table run and pit light

What kind of problems were you having?

I still have one lane that absolutely WILL NOT take an expander... the only one in the house that gave me a problem with it. When I put the expander in, it loses strike cycle, sees pins that aren't there, and does some other weird stuff. I've gone through the wiring over and over, and can't find anything. It's something in the machine wiring... I just can't figure out WHAT!! I've tried working expanders and chassis from other machines, and the problem stays the same. So it's still running with a table cable, with all the cells attached to the 1-pin wire so it'll run a normal 1st ball cycle. The scoring doesn't mind, but it takes longer because it doesn't have short strike, 7/10 pick, or 10th frame automatic reset. It's dragging down the other lane in the pair, too... Qubica has to address lanes in pairs... I can't set it to run with the scoring on one side, and not on the other... so they're the slowest pair in the house.

[amfpinboy]

Re: Table run and pit light

Gman We were having the same problems. They were going into false strike cycles, seeing pins that weren't there and no strike cycles. We had to leave all the wires connected to avoid any more cell damage from false strikes. Two company installers busted their humps to get the bugs out,but it was a big waste of time and money. Everything was blamed for the boards not working properly. Cameras, ball detectors, harness wiring and poor grounds were blamed for the problems. It was a nightmare.