The right flipper now and then stays up after the button is released and only drops later or when the game is switched off. The button is not sticking.
Flipper sometimes stays up until power off: broken coil diode
Cause: The diode on the flipper coil had a bad joint and was barely attached; it tested fine but failed in use.
Checks
- Wiggle the diode on the flipper coil and look at its joints; a diode can test good on a meter and still be bad.
- Also check the flipper board for cracked solder joints and keep the EOS switches clean and aligned.
Fix
- Replace the coil diode (cheap; worth doing whenever the coil is serviced).
Systems
Games
Related tips
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- Flipper stuck up with power on (Playboy and later)
- Solid state flipper has no power though fuses are good
- Lower right flipper cuts out for a few games at a time: faulty EOS switch
- Solid state flippers, Robocop and later
Source: Pinball Repair help group!! (Facebook group)