(Topic ID: 85795)

fish tales dot matrix display fuse f 602 blows at start up please help!!

By JIMAKOST

10 years ago



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  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 10 years ago by JIMAKOST
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#1 10 years ago

Hello pinball fans i have a problem with my Fish Tales at power up it blows the f 602 fuse on my dot matrix display,i have rebuild my hv section all new parts and new br1-br2 bridge,i put my multimeter on the violet wires of the transformer with no load on it and the reading is 44 v can please someone tell me is my transformer bad because i believe so!!so instead replacing the transformer due to very high cost i decided to order a new transformer single dual output 80v-100vac just for the dmd to power up,can some one please tell me if this will work or what is the problem with everything in general !!thank you all for your help and support.

#2 10 years ago

Is BR2 on the DMD driver board good? Are you sure? Any solder splashes in your work?

Is pin 1 aligned correctly? These little bridges can be rotated 180 degrees and soldered in backwards easily, which would probably blow the fuse

Are you measuring the violet wires correctly? They should be 100 VAC - AC is measured from 1 wire to the other, not against ground. So you'd put one probe on each violet wire.

#3 10 years ago

Yes i did put one wire to the other and it measures 44 vac but not only that i set it to ohms my multimeter and it shows infinite resistance open,Also i buzzed out all traces and no short ,and measured the the br2 with diode tester and everything is good so,i decided to order a single dual voltage transformer 80vac-100vac from virtual pin to power up my dmd board will this work!!here are the photos for my dot matrix display board ,is it a good job!!thank you very much for your help and your time for helping me out on this.

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3 weeks later
#4 10 years ago

Problem solved,bad 100vac ,i bought a new transformer 80vac-100vac transformer just for the dmd from here:
http://virtuapin.net/index.php?main_page=product_info&cPath=18&products_id=122
and here are the connections and works perfect!!

transformer_wiring single dual output transformer 80vac-100vac.pngtransformer_wiring single dual output transformer 80vac-100vac.png
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