Elektra
Bally, 1981You're currently viewing posts by Pinsider Richard_BoK.
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If I remember correctly the solenoid expander (with the lightbulb) switches between the top PF and the lower PF.
And the solenoid expander is controlled by a thyristor on the lampdriver. And it is wired via connectors on the lampdriver which are quite often damaged (solder cracks).
What does it do during the lamptest?
And the cloud is probably controlled from the aux. lampdriver. That can be connector problems as well.
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Brooklyn, NY