(Topic ID: 249765)

No continuity fuse to pin connector GI lights

By Tantrum9

4 years ago



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#1 4 years ago

On my WCS94 machine the right side GI lights are out. I get continuity everywhere except the right side of the F109 fuse (with the fuse out) to the J121-8 pin. I have the connector off and the fuse out so I am testing the right side fuse terminal to the actual pin and not the pin-connector. I was hoping to get some advice on what the next steps are or where the issue may lie. When I test the F110 fuse to J121-7 I get the continuity I should so that seems to be where the issue is. TIA for any advice.

IMG_20190819_111811 (resized).jpgIMG_20190819_111811 (resized).jpg
#2 4 years ago
Quoted from Tantrum9:

TIA for any advice.

Reflow solder on that header pin. You probably lost through board continuity. Or run a jumper from the trace to the nub of the pin.

LTG : )

#3 4 years ago

http://pinwiki.com/wiki/index.php?title=Williams_WPC#General_Illumination_Problems

This page has coloured easy schematics of the g.i. string circuits.

check for continuity EVERYWHERE, even contacts of g.i. lamps pcbs, pdb traces etc etc.
Don't just re-flow solder if you find a problematic connection, suck all old solder first from the connection point, and then add new-fresh solder

#4 4 years ago

Pins 7/8 route from top of board to bottom of board by using the through holes for those pins. I see those pulled often when amateurs have attempted header pin replacement.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

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