(Topic ID: 27730)

Any Chicagoans willing to come teach me a few things repair-wise?

By madcow

11 years ago



Topic Stats

  • 3 posts
  • 2 Pinsiders participating
  • Latest reply 11 years ago by madcow
  • No one calls this topic a favorite

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#1 11 years ago

I've got a few problems with my Judge Dredd machine that are beyond my level of expertise (GI string out in the playfield and backbox - not the fuse, can't see any burnt connectors, and a lamp not working after I've tried to resolder it.) I'm really eager to learn and I've made a few threads about the issues but I'm a visual learner and I'm also worried I'll break something while I'm in there.

I got a few quotes from repair techs in the area and the cheapest was $100, which is reasonable but still more than I can afford right now, so I'm wondering if anyone in the Chicago area is willing to come help me out with it for less - maybe $50, or homemade dinner&drinks of your choice? Plus unlimited games on my machine

I figure it's a long-shot but worth trying, please post or shoot me a pm if you'd be interested in helping me out, thanks!

#2 11 years ago

Set your meter to AC, check GI power to and off power driver board. ( biggest board in head, lower left area of that board ).

Don't know how to use your meter, check voltage AC ( hot to common ) or DC ( positive to ground ) don't know how to check continuity ? YouTube likely has a lot of videos you can use.

And with power driver board out use John Wart's handy GI guide -

J115 pin 1 to ground. Note if this connection is broken, wacky GI dimming
can occur.
J115 pin 2 to fuse F106 (lower left) to J120/J121 pin 11, to J119 pin 1.
J115 pin 3 to fuse F110 (lower right) to J120/J121 pin 7.
J115 pin 4 to fuse F109 (upper right) to J120/J121 pin 8.
J115 pin 5 to fuse F107 (middle left) to J120/J121 pin 10.
J115 pin 6 to fuse F108 (upper left) to J120/J121 pin 9.

J115 pin 7 to Q10 top leg (triac lower rt). Q10 middle leg to J120/J121
pin2.
J115 pin 8 to Q18 bottom leg (triac upper rt). Q18 middle leg to J120/J121
pin1.
J115 pin 9 - key
J115 pin 10 to Q16 top leg (triac lower mid). Q16 middle leg to J120/J121
pin5.
J115 pin 11 to Q14 top leg (triac upper mid). Q14 middle leg to J120/J121
pin3.
J115 pin 12 to Q12 top leg (triac left). Q12 middle leg to J120/J121 pin6,
to J119 pin3.

There now you can learn and fix your GI with the best of them. And you saved money.

LTG

#3 11 years ago

Well, I got my multimeter and removed the power driver board...I'm sorry but I still don't get it and can't find any youtube videos that run through this...

What I understand so far: I put the black lead on a ground, and the red on what I'm testing but I don't understand what you want me to do for the 2nd step...

J115 pin 1 to ground - Beep.

J115 pin 2 to fuse F106 (lower left) - Beep. Here's where I get lost - to J120/J121 pin 11, to J119 pin 1. I don't understand what I'm supposed to do here, can you try and explain it like I'm 5?

I appreciate it. I assure you I'm doing plenty of google side research to try and figure this out, I'm not being lazy, I just don't get it yet...

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