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Bally, 1992You're currently viewing posts by Pinsider DumbAss.
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Quoted from Tuukka:The optos get their 12V voltage from driver board. So check regulator Q2 (LM7812) and fuse 115.
All playfield voltage (except flipper voltage if the machine is WPC-89 and uses a fliptronic board or the extra flipper power supply board) does derive from the power board.
However ... optos are powered by the UNREGULATED 12V (+12VU) not the regulated 12V (+12VR).
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