Terminator 2: Judgment Day
Williams, 1991You're currently viewing posts by Pinsider Schwaggs.
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With ColorDMD the 100V supply on the display board is not used.
Carefully inspect all those alligator clips and make sure they are not shorting together. One of the worst ways to connect a mod.
Better yet, disconnect all the clips and clip them to the insulated wire (so you can remember where they go). Replace the fuses and see if the problem is resolved. Then cut off the alligator clips and solder the wires on at their proper positions.
Quoted from VolunteerPin:I did move the alligator clips so they are now not attached. Still blew the fuses (lol, I'm running out...only a few more left).
I did mention the gun but I had not actually worked on it yet. Good thought on at least looking at it.
I noticed something I had not earlier. I guess I had not really paid attention. The board has a bunch of blackness to it and it looks like maybe a have a blown capacitor(s) (if that is correct terminology - I am terrible on board stuff) Could this simply be a board issue that I need to either get the board repaired or purchase a new Rottendog?
[quoted image]
You can see my blown F103 and F105 in the photo too.
As best I can tell, that looks to be driver Q20 that is toasty. That is the driver for the drop target coil you were working on. You will need to repair that part of your board.
Check the resistance of that coil. Check to see if there is a diode on that coil (there shouldn't be).
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West Chicago, IL