(Topic ID: 256861)

Shadow F115 blowing fuse

By RebootMac

4 years ago



Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 4 years ago by zaza
  • Topic is favorited by 1 Pinsider

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#1 4 years ago

Hey guys,
Working on a shadow, and I'm trying to run down a possible play field short. It has a Rottendog CPU socketed U20. Also R69 is completely burnt off the board. I'm running through the schematics in the manual. Maybe I'm missing it. But I believe its connected to pin 16 on the socket. Trying to see what could have burnt the resistor up and maybe what switch strobe to go after. Any help would be appreciated. Thanks!

#2 4 years ago

I used to know this stuff right off the top of my head.
Anyway look in the manual and locate the f115 fuse and see what it controls.Is it blowing the fuse upon startup or during playing the game?

#3 4 years ago

Column 3 driver (U20 pin16 + R69 ) on the CPU-board has probably shorted with a power source.

Find the short on playfield
replace U20 on CPU board ( and check R69 + C13 )
replace F115 on Powerdriverboard

in that order

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