Hi guys - it is me again bothering you with my poor FT pin

I have noticed that my lower backbox lights are completely out. Also, the upper part of backbox lights is very dimly light....it fails to illuminate the translate... Flashers in the backbox work normally.

It might be that it affects also lower playfield GI but I'm not sure as I'm missing a lot of bulbs there.

I'm a noob when it comes to technical stuff but I'm not afraid to try things that are in my power and learn something new.

Please let me know what could be causing this and how should I approach the fix.

IMAG0278.jpg

Thanks so much for your help!

Thanks a lot guys for your feedback!

Do you know which wires are responsible for lower backbox?
How can I test using multimeter for continuity from connectors to backbox?

I have no experience with this kind of technical thing whatsoever but I would love to learn.

Looks like someone hacked this pin
I have also found two wires not to be connected at all (ones coming from playfield area I think).

Check out the pictures :

1.jpg 2.jpg 3.jpg 4.jpg

Thanks a lot for the diagram! I think I have located the problem - two wires are not connected and testing with multimeter I think I'll solve the lower backbox problem for sure as brown wire is one of those disconnected wires (and this wire connects to the lower non working part of the backbox).

I have a question : does it matter to which pin the wire connects on J120 and J121? Is it safe to connect the wire to any pin as long as its "free"? (I'm asking as some might be connected to wrong "slots" judging from the document)

You guys are very helpful!

I'd just like to get some terms straight since English is not my native language :

Connector - the white plastic that plugs into the board?
Header pins - I'm not sure what is this? Is that the thing which is soldered to the board and to which white plastic connects to? (I'm not sure I'll be skilled to replace this )

I'll try to make a sense of the wiring tomorrow and connected the disconnected ones for start. I'm also trying to locate the new connectors here locally if possible...not sure if they have something similar (no pinball stores/parts anywhere close).

Thanks for pointers guys! I think I have solved the issue with lights by reconnecting two missing wires (one for lowerbackbox other for lower playfield). Upper backbox lights are dim because it has 12v light bulbs installed. I'm waiting to get some replacement parts to fix this for good.

Thanks so much for your help once again!

To update you guys - I have solved this issue completely by getting new molex connectors, studying manual and finding which wire goes where and replacing ALL the light bulbs on the machine with new ones (regular not led unfortunately). I was amazed when I first saw my fish tales light up