Williams EM first start up

[Homepin]

True, i have had fun finding all the other teething problems but this one is doing my head in, two weeks now without playing a pin

Must be time to buy a second one then to avoid times like this 

[nrh_racing]

 
I'm want that indy 500 on egay, trying to work out how to get it past the other half

[Retropin]

I'm want that indy 500 on egay, trying to work out how to get it past the other half

Pleasure of having many machines.. can sneak one in pretty much unoticed!

[nrh_racing]

Hahaha

If i manually activate the tilt relay the lights go bright again, even know what wire it affects but still can't work it out or see anything wrong with it  Look at the bonus unit and it looks all adjusted right as wells as the credit unit and player unit as i sanded them too

[nrh_racing]

Lights stay dim if i activate the tilt switches under the play field or side of pin, only the relay its self makes it go bright

[Retropin]

Ok... i dont have the schematics for LITTLE CHIEF but i do have BIG BEN which is of the same year so operation will be the same.
TILT relay has a normally closed switch on it... this is directly linked to a 2 way switch on your ADV UNIT SWITCH which can be open or closed... if this is closed then it activates your bonus unit.. it has to go open to disable the bonus unit continually running.

Been a while since i worked on a WMS game, but when it tilts, lights go out, so id be checking all contacts on this relay and making sure the 2 way switch on ADV UNIT is operating correctly

[nrh_racing]

This may be some help, i have followed the wire from the tilt relay to here and havent seen any shorts/problems

[Retropin]

Youve gone up a blind alley mate... nothing wrong in the pic you posted. The bottom switch that is closed only opens once the credit wheel has done its full turn and the bar opens this.

Did you check the ADV UNIT relay?

[nrh_racing]

Looks all good I think

[nrh_racing]

Here's a pic

[Retropin]

Yes but have you made sure it makes and breaks with a DMM?... You need to test all contacts with your DMM as dirt and slight of adjustments with throw the logic out

[nrh_racing]

Just ran back out and it tested ok, gave it a quick clean as well. Thanks so much for your help by the way