Canīt just yank the molex [from main power on the m4] for a few seconds to check? Kinda odd to me the basic trouble-code LED flashes wouldnīt be listed in the manual, but dey ainīt there.
Found this on another site from a search, not sure how reliable it is though, youīd think itīd have more specific logic done to troubleshoot potential issues or failures:
Hell, not even sure what those explanations actually mean. Initialization, I assume meaning itīs sensed 12v on the ACC/IGN line and is waiting the set interval to start everything up. Waits, Iīm guessing means itīs either a) waiting for sensed 12v, or b) has already and is giving power to the 12v and 5v rails, but is just waiting to sense the mainboard as actually on? *shrug*M4-ATX is not working (How to test functionality)
Fast blinking = Initialization
Slow blinking = Waits for mainboard start
Permanent ligh = Mainboard is on