(Topic ID: 292567)

Road Show , Start city coil will not fire

By TecumsehPlissken

7 months ago



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  • 4 posts
  • 4 Pinsiders participating
  • Latest reply 7 months ago by alexanr1
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RS solenoids.jpg
20210427_103849[1] (resized).jpg

#1 7 months ago

Working on a Road Show and the start city coil will not fire either in a game or in test. When I started to try and track it down I checked J107 and found this behind the connector on the board pins. A small piece of copper wire shaped almost like a figure 8 that looks like someone was trying to tie Pins#2 and #3 together on the board. Question is why? Anyone have an idea(s) what this is supposed to accomplish. I cant imagine it got there by accident.

20210427_103849[1] (resized).jpg
#2 7 months ago

someone tied the fuses F104 and F105 together (bad idea) (see red line in picture)
Could be because the header pin J107-2 or J107-3 has no connection to the PCB (bad solder or damaged trace)
Check fuse F105, it looks like it has some discoloration.

After removing the short between pin 2 and 3, check Q66, coil and wire.

RS solenoids.jpg

#3 7 months ago

Check the CPU cable.

#4 7 months ago
Quoted from TecumsehPlissken:

Working on a Road Show and the start city coil will not fire either in a game or in test. When I started to try and track it down I checked J107 and found this behind the connector on the board pins. A small piece of copper wire shaped almost like a figure 8 that looks like someone was trying to tie Pins#2 and #3 together on the board. Question is why? Anyone have an idea(s) what this is supposed to accomplish. I cant imagine it got there by accident.
[quoted image]

You need to submit this to the thread of crazy hacks done to Pins.

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