(Topic ID: 95757)

Erratic flipper on LW3

By Msch

6 years ago

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  • 8 posts
  • 3 Pinsiders participating
  • Latest reply 6 years ago by RussMyers
  • No one calls this topic a favorite


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#1 6 years ago

Left flipper doesn't work or strikes a couple times sometimes when depressed. Started as an issue after it warmed up, now it's happening cold. I'm new to ownership and could use some advice as to what to check. I've looked over the leaf switch on the button, looks good. All the solders appear solid and well done. I don't think it's connections, could it be a bad coil or flipper board? Any advice would be help. Thanks!

image-816.jpg image.jpg
#2 6 years ago

Don't over think it. Go over the basics. Clean flipper button and EOS leaf blade switches ( if your game has EOS leaf blade switches, if so be sure plenty of tension holding them closed.

Reflow solder on flipper coil lugs. Check for broken wires there especially the thin wire coming off the coil to the lug.

LTG : )™

#3 6 years ago

This game doesn't have an eos switch. If it does, it's not a leaf. The coil only has 2 lugs. Cut and re soldered the wires on the coil. Going to order a new button switch, but give this one a good cleaning for now. Will check back later after closer inspection. Thank you.

#4 6 years ago

Sounds like only the hold (9v) voltage is firing.

Remember, DE (Deger) flipper design is one single coil of wire in the solenoid (not 2 parallel wound like B/W) and only 2 lugs. So there is no thin or thick wire, just 2 thick wires.

When the deger board senses a switch closure, the red LED flashes once, the coil gets a very short (few ms) pulse of 50v and then hold voltage at 9v.

If the EOS switch (Normally Closed) is open all the time, this can happen - you only get the 9v hold voltage.

The 50v transistor for that flipper might also be bad (always open) on the deger board.


#5 6 years ago

After taking the button switch apart, I noticed the paper insulator between the first two leafs was suspect. I put a piece of tape on it, and now it seems to be working better. Who knows. I'll play 5-10 games later tonight and report back if I have any issues. This table needed some love, but it's looking pretty great now and I haven't managed to screw too much up so far haha. Thanks for the advice.

#6 6 years ago

Yeah, LW3 is 1992 so no EOS switches (just like DESW or R&B).


#7 6 years ago

Than you RM, it can see the led flash when the flippers is hit. I'll give that a test as well.

#8 6 years ago

Give the cabinet flipper leaf switch buttons a good cleaning, but be careful not to use anything abrasive - they are low-voltage gold-flashed contacts. If you scrape the flashing off (or someone before you already has) they corrode rapidly and give a weak signal to the board.

I use a piece of rough paper (like a cheap business card) with some rubbing alcohol on the paper and pinch it between the contacts and run it through a few times.


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