Bally 809B upper unit - contact or lightproblems?

[JanGbg]

Hi!
I got the same problem with my 888 ( 5-liner). I found that the connectors was to Close or far from each other (can't remember). Check the circled connectors at my Picture.

[The Fatman]

When we suggest to "check the switches" we also mean check the actual contact to make sure it is making a good contact, not just the surface being clean. I have had switches that look good but are barely making contact( intermittently)which could cause the machine to do just what your experiencing. Check for continuity with a Volt Meter to insure the contact has i a good solid one.
Dave

[david_germany]

ok dave.

ill try it !!!

[david_germany]

yes !!!! i could fix the problem :-)
there was a contactprobldm at the top unit.
2 contacts was to near together.
now i have bend one contact for more space.
now it works !!!!!

look at the picture.
this contacts are at the right side of the top unit.

https://www.dropbox.com/s/ouje7kf4cguffvc/Foto%2017.05.14%2014%2037%2046.png

david

[The Fatman]

I knew you could do it. 
Dave F.

[david_germany]

but only with your help !!!!!!! ;-)

thank you very much :-))))))))

nice weekend

[david_germany]

oh noooooo
:-(
the problem is comming back after a few minutes playing...
:-(

damn it.
i think there is an other problem :-((((

[JanGbg]

It looks that it was what I told you a week ago with my pic. But dont Thank me... :-(

[GOS]

there is a step switch located to left of the circled contact (just above the stepup coil) - that contact is what activates the step up coil - if it doesn't open close correctly the step up will be erratic.

[david_germany]

thanks barry !!!!
i hve checked the step switch and it looks like he's working...
here is a video:

<a href="http://youtu.be/PUap6YQDtns" target="_blank" class="aeva_link bbc_link new_win">http://youtu.be/PUap6YQDtns</a>

what do think about it? :-?
the problem is still there but only sometimes, how you see it in the video

[The Fatman]

Stepper seems to advance ok ... please check the continuity on the switch I showed you in a previous pic. This is where I had the same problem as yours. It looks to be good and if you put the meters leads on the blade to check it, it will look ok. But check it from the solder tabs and not the blades. I am thinking you have a switch that looks to make contact but it isnt, and thats the one I had the problem with.
Dave 

[OldReno]

Your switch needs much much more push than that.  You need to adjust the smaller blade (static) towards the larger blade (actuator blade).  I see hardly any movement at all.  This switch should stay closed for longer.  When switches like these contact, they are supposed to move together, and this allows for the switches to clean themselves.  They are self cleaning, and if they don't press well against each other, they won't clean.
They should open at the End Of Stroke, that's why they are called E.O.S. switches, not at the beginning of stroke...which is what yours does.
A general rule of thumb, if you can see a switch push against another switch, it's probably making good contact.  If you don't, it probably isn't.
The EOS allows for a holding circuit in the odds relay coil, which will stay on until the odds step up coil has time to fully pull in.  Then, when it is fully in, the EOS opens, and the holding circuit drops out, ensuring you have a full step on the solenoid.  I think I mentioned the page this circuitry can be found on in your bally manual a few posts ago.

[OldReno]

On page 18 of your bally manual, you can see the circuitry for the odds (step up) relay, and the odds (step up) coil (solenoid).  Notice that the odds SU relay, has one of its own switches in line with itself.  This is what makes the holding circuit, and the EOS switch is what breaks the holding circuit.  Therefor, the odds SU relay will stay on until the odds SU coil steps and physically opens the EOS. 
It is an interesting circuit.