(Topic ID: 330333)

Judge Dredd Backbox lighting issues

By PBlank

1 year ago



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  • 5 posts
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  • Latest reply 1 year ago by PBlank
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#1 1 year ago

Hey everybody, I could use some help since I’m new to troubleshooting pinball issues.

I just got my Dredd, and was putting in all new leds in the backbox tonight and some are working, some are working but went dim all of a sudden, and some just don’t work. The ones with issues aren’t all on the same wiring also.

A few did end up working after some back and forth movement with the leds , so maybe dirty contacts in the connectors?

I’m addition my j120 looks burnt and I think this could be the issue? Pictures below.

I have searched and found a few previous threads with similar issues but not exactly the same. Previous threads linked a new connector wire and header for j20 from Marcos. I’m just trying to gather if people feel that is a solution to this particular issue or if there is anything else I should try.
Any help is appreciated!

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#2 1 year ago

It's that burnt connector that's causing you problems. Ideally, you should replace the pins on the board & replace the IDC connector with a molex connector. You'll need header pins, Trifurcon crimp connectors, Molex housing, a Molex crimper & a good soldering/desoldering setup. Once that's done & you go with LEDs It should never be an issue again.

#3 1 year ago
Quoted from Pin-Bob:

It's that burnt connector that's causing you problems. Ideally, you should replace the pins on the board & replace the IDC connector with a molex connector. You'll need header pins, Trifurcon crimp connectors, Molex housing, a Molex crimper & a good soldering/desoldering setup. Once that's done & you go with LEDs It should never be an issue again.

Thank for verifying that!
I have a few questions if you don't mind.
I'm assuming outside of an obvious visual that says otherwise, I can just trim back the exiting wires and reuse them?

I have crimps for other basic arcade stuff I've done, so really then all I would need are these 3 parts correct?
https://www.marcospecialties.com/pinball-parts/5791-10862-11
https://www.marcospecialties.com/pinball-parts/CF15611
https://www.marcospecialties.com/pinball-parts/5820-09078-00

I haven't done any soldering/desoldering yet. I do have a soldering gun, I just haven't opened it and tried to learn it yet. So I guess I should start that, and practice before I try on this. I don't want to mess up my board.

Thanks for the help.

#4 1 year ago

the first 2 links are fine, best to replace IDC's with crimp type (as suggested above).

the 3rd link isn't the right pin, I suggest (as suggested above) https://www.marcospecialties.com/pinball-parts/CT156T

and the keying plug https://www.marcospecialties.com/pinball-parts/CF156K

the desoldering I imagine to be the hardest for you if you haven't done any soldering/desoldering.
cutting the old header pins off might help as there will be less heat dissipation.
you'll be heating the solder up so as to suck it out with either an manual or electromechanical/electric desolderer, and some solder suck wire with flux will help.
try not concentrate the tip of soldering iron directly on the solder pad, but rest/put it against both the end of the pin and the solder pad, ideally you will see the solder change colour and melt sand it's at this point you want to put your solder sucker over this area and release the solder sucker to hopefullypull all the solder out leaving it clean of solder, but should some remain is where solder suck wire comes in handy as you place it over the same area, against the pin and the solder pad then rest the soldering iron tip on the copper wire and as it heats up and with it being flux infused it will/should draw out any excess solder.
you don't want to remove the solder pad from the board, nor pull out the through hole trace.

good luck!

2 weeks later
#5 1 year ago

Thank you everybody. I got the parts and redid everything and it’s working great now. Appreciate the help!

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