Replaced post caps that were badly yellowed or were missing.
Replaced one acorn nut with a post cap
Online reference photos seem to suggest they should all be post caps, will check manual next week to confirm and then replace the rest.
Resoldered wires connected to Red Bank targets.
While disassembling noticed one disconnected wire, and while removed the assembly another wire came loose on both ends
Removed the bank assembly, disassembled and cleaned.
Had suspected weak springs but they were fine.
Old lubricant had hummed things up just enough for the targets to not smoothly drop.
4 Issues Determined
• Discovered missing screw and incorrect screw on main board bracket - Removed and Replaced
• The two screws supporting the solenoid bracket were loose - Retightened
• Solenoid spring had slipped below the cylinder - Reseated
• A Rubber pad is worn down and revealing the metal beneath. With flipper in the up position there is metal on metal contact - Worn Part touched Leaf Arm. Could not remove the piece to flip it around.
Temporary Fix: Electric Tape to prevent metal/metal contact
Reflowed solder on the power board’s connector pins. Intermittent ground connections were causing the solenoid issues. Reflowed all board connector pins for preventative maintenance.
Checked fuse F2, the solenoids fuse. It is fine. Voltages are reasonable from power-on to first solenoid firing, and then they drop to surprisingly low voltages. Next steps: use a thermal camera to see if anything is heating up, and measure power flow.
Re-opened problem report
Did nothing meaningful really. Was messing with the action of the ball feed. At some point while fiddling with the machine all solenoids stopped working.
Replaced solenoid fuse and everything seems ok? Started the game several times and no issues with ball feed