p1899m
New member
Trying to troubleshoot this lamp sequencer board and have looked at the manuals online at a few sources but none seem to have a schematic or even parts list for the lamp sequencer board. Actually none I've located have any schematics for any of the boards.
So far I've tested continuity to the lights themselves and all is good. I also verified in test mode I get a pulse to the resistors. Beyond this I don't know where to go. Sounds like replacing the MPN22222A's might be worth a try but if I'm testing what I'm pretty sure are diodes correctly then I got a lot of bad diodes too. So a parts list and schematic would be helpful if anyone has a source for them.
So far I've tested continuity to the lights themselves and all is good. I also verified in test mode I get a pulse to the resistors. Beyond this I don't know where to go. Sounds like replacing the MPN22222A's might be worth a try but if I'm testing what I'm pretty sure are diodes correctly then I got a lot of bad diodes too. So a parts list and schematic would be helpful if anyone has a source for them.
