After fitting non-ghosting LEDs, a row of round amber lamps glows when it should be off. In single lamp test, each lamp in column 8 also lights its neighbour in column 7, and the start button lamp flickers.
LED ghosting on a row of lamps: start button lamp wired to wrong terminal
Cause: The red/yellow wire for the start button lamp had been connected to the wrong power driver board terminal, linking two lamp columns.
Checks
- Step through single lamp test and note whether lamps in one column also light lamps in the next column.
- Compare the start button lamp wiring at the coin door and the driver board with the manual's wire colours.
Fix
- Move the start button lamp's red/yellow wire to J133 pin 5 on the power driver board.
Systems
Games
Related tips
- Lamps light twice in the all-lamps sweep, or two lamps act as one
- Part of a lamp row or column stays off
- A whole lamp row or column is stuck very bright
- An entire lamp row or column is out
- A lamp column or row stays on all the time
- A lamp row very bright or dead
- One controlled lamp out while the rest of the matrix works
- None of the controlled lamps work, or they light in the wrong pattern
Source: Pinball Repair help group!! (Facebook group)