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(Topic ID: 115038)

D&D several solenoids out.

By atariaction

5 years ago

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  • 10 posts
  • 3 Pinsiders participating
  • Latest reply 5 years ago by atariaction
  • No one calls this topic a favorite


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#1 5 years ago

Just picked up a D&D. Several coils are not working. Checked/replaced all bad fuses. Says control board must flash 9 times to be working properly but it only flashes 6 or 7 times. Not sure. Was hard to tell. See pic of test sequence. So that is where I'm at. Any help or suggestions would be greatly appreciated. Thanks!


#2 5 years ago

nothing? is this game to obscure?

#3 5 years ago

What do you mean that they aren't working? Are they not firing at all or are the wrong ones firing?

You do need 9 flashes so it is important to figure out how many you are getting.

#4 5 years ago

3 aren't firing. the 2 lock mechs and the drop target reset. will have to check number of flashes. machine at my neighbors (i ran out of room

#5 5 years ago

OK just ran some tests. The suspect coils do NOT fire in solenoid test. The co-responding switches are working in switch test from what I was able to test. The suspect coils are all getting almost no voltage and the working coils are getting about 45 volts.

Non-working coils read as follows

Drops 17 J06-05

Lair LT 18 J09-01

Lair RT 19 J09-02

Teleport left 20 J09-03

Teleport right 21 J09-04 this one is intermittent

Top bumper 11 J06-01

Left bumper 12 J06-02

Right bumper 13 J06-03

Bottom bumper 14 J06-04 this bumper actually works fine but it is on the same connector it seems so I thought that was strange?

I reseated connectors J6 and J9 on the board but that did nothing. So do you think this is likely a transistor(s) problem?

Also I'm sure I was reading the LED sequence on the wrong board. The LED sequence on the other board is perfect and correct.

#6 5 years ago

probably a failed transistor from what you say. check the corresponding Qx, and associated diodes.

might want to check if a wire isnt cut somewhere, like the common wire for these coils, sounds like too many coils failing to me.

#7 5 years ago

Well the culprit was found. wire off the daisy chain! all solenoids now working!

#8 5 years ago

archaik you were right

#9 5 years ago

see, told you ^^

now you can go kill the dragon

#10 5 years ago

Hells Yea!!!!!!

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