With a colour LCD display fitted, the right flipper becomes very weak whenever the hologram lamp and mirror motor are running, and is normal the rest of the time. A rebuild and new coil didn't help.
Right flipper weak only while the hologram lamp and mirror run: colour display load
Cause: The colour display draws more from the game's 12 V supply than the original display, and with the hologram lamp and mirror motor also running the supply sags.
Checks
- Block the flipper optos from the hologram lamp's light to rule out stray light.
- Disconnect the hologram lamp and mirror motor and see if the flipper stays strong.
Fix
- Power the colour display from its own supply, or fit an LED hologram lamp to reduce the load (disconnecting the lamp and mirror cured it here).
Systems
Games
Related tips
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Source: Pinball Repair help group!! (Facebook group)