(Topic ID: 149464)

Getaway hs2 fuse blow because of the supercharger

By xkane47

8 years ago



Topic Stats

  • 9 posts
  • 5 Pinsiders participating
  • Latest reply 8 years ago by GRUMPY
  • No one calls this topic a favorite

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#1 8 years ago

I just got a Getaway and realized the supercharger was slow. When I look closely, I found that the second of the 3 magnets in the supercharger doesn't work. So I look at the supercharger board Under the playfield, the transistor that drives the magnet is missing and the resistance just above it is burnt. I tought it would be simple to repair... I changed the burnt resistance, the magnet, 3 transistors on the supercharger board, the 2 transistor on the main power board, 2 diodes on the s.c. board, redo all the soldering on the s.c. board, check the wires for sign of damage, check the traces/continuety on the boards and I still get the same problem, everytime I throw a ball in the supercharger, the fuse blows, but if I don't plug the second magnet, everything is fine. Please help

#2 8 years ago

Measure the resistance of the magnet across the two wires. It should probably be something in the neighborhood of 5 ohms, although you can measure one of the good ones as a reference.

If the resistance is near zero, you can start unwinding the wire a bit to see if you can visually identify where it's shorted. If that doesn't work, you'll have to replace the magnet.

#3 8 years ago

Do these have a transistor on the board? If so, I would check that too.

#4 8 years ago

Check also the opto transmitter and opto receiver in front of magnet.

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#5 8 years ago

The resistance of the coil is the same then the others and it is a new coil, I changed all three transistor on the supercharger board and the 2 corresponding ones on the power board. All the opto have been tested and works well.

#6 8 years ago
Quoted from xkane47:

The resistance of the coil is the same then the others and it is a new coil, I changed all three transistor on the supercharger board and the 2 corresponding ones on the power board. All the opto have been tested and works well.

Crap, I'm sorry, I guess I didn't read the whole original post about how you had already changed that. I do that a lot.

So at this point, I would have to assume that there is a short somewhere on the wires correlating to these magnets. Is it possible that the diverter just before the first magnet has pinched the wire over time?

#7 8 years ago

Check the Q5 (TIP102) on s.c board.
In my same event the TIP102 also burned.

#8 8 years ago

The q5 has been changed and I recheck all the wires, there is no sign of pinch or grouding somewhere. I also check exactely when the fuse blow is when the ball pass trough the second coil of the supercharger, if i disable it, the fuse doesn't blow. I recheck every diode on the board... Is it possible that one of the 3 chips on the s.c. board is bad? at this point it is the only thing left that I can think of

#9 8 years ago

Take out coil 2. Put coil 1 in coil 2 place and tested again. If coil 1 works then Q5 is good and coil 2 is bad. I know it ohm tested fine. The only thing left is a bad coil.

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