Help me troubleshoot a seemingly simple prob on my Williams Fire . . .
This concerns the light board in the attached pic:
Board is under the main building right in the middle of the playfield
Ignore the top row of 5 lamps . . . they all function fine
Below these are 16 "windows" (with corresponding lights) that light up but only 4 of mine do?
In the single lamp test mode I get #9 and #18 to light with one test (circled in red in pic)
In another single lamp test I get #21 and #14 (opposite corners of board and circled in yellow)
Here's what I've done:
Diode test on all and I get 580 something as a reading on all except the white ones which demonstrate 0 ohms like they say they should in my manual
Look at the top of the board and you'll see 2 molex connectors (one left small one and one right large one)
Hooked up the tester while in single lamp mode to test all these wires feeding board and all red wires on right side in pic show 16 volts or so, yellow wires show 3 volts
Green & White wire set (molex on left) show no voltage at all (should they?)
I'm sure this is easy but I'm not that skilled with a tester or circuit boards yet - any ideas??