The backbox lights that are connect to J6-6 --F1--J7-8 are not working for some reason. DC volts is reading .05 volts or less. Based on the drawing it looks like power is supplied directly from the transformer and I should just be able to test for 5.9vac off the yellow whites off the transformer plug? If I am not getting 5.9vac off the yellow/whites then its a transformer issue? I tested continuity from yellow whites to the transformer from the lights and that is good. Or is this some problem with the interconnect board?

Thanks for any assistance!

Great questions. Fuses are fine. as all 4 fused on the interconnect board are the same right in that are f1-4 i did swap f1 with f2 and same result. The connector on the right side. where they yellow/white wires are and the yellow whites are that loop may be a part of the issue looks like those may be burnt after closer inspection. So maybe it is just an issue with j6 on the interconnect board?

Ok, so i must have got tired of repairing this machine at some point and gave up on the lights. I had a new connector for it and I had the new J6 connector for the board. I rewired the connector for J6 and removed the old burnt connector on the board and put the new one on that I had. Same result. I am wonder now if it is just a fuse issue and just replacing all the fuses would help. Not really sure where to go after this.

also, wiggling didnt have an effect on the lights.

When I test continuity from the plug by the transformer to the lights that are not on I have continuity.

Before

p[f3 (resized).png

pf4 (resized).png

after

pf1 (resized).png

pf2 (resized).png

I reviewed the plug again and made sure the wires were in there deeper. When I touch the yellow/white with red lead and yellow wire with black lead on my multimeter I get 5.9vac across all pins. So I think I got the plug sorted. So the issue that remains must be with the board i am guessing. Reviewed that relay board as that is where the green and browns go and wiggled theplug on there and wires fell out of the connector. So someone set me up for failure there. However after touching the wires in to the connector all my lights came on so problem solved hopefully. Thanks all!

Easy for you experienced folks . Wasnt too bad, and the burnt connector should have been replaced anyway so just some maintenance. I totally forgot about it and when you go to throw your LEDs in for a quick swap you end up with, ooh yeah those 2 strands of lights have been out since I got the machine. Alas all is well so I can go about my business of replacing the rest of the bulbs and putting the new ramps in. Fun machine was my first one so I have a soft spot for it, so its nice to have it all proper again.