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(Topic ID: 36510)

Odd Problem; DE LW3 Beacon wont turn off!

By RonB

7 years ago

Topic Stats

  • 7 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by action76
  • Topic is favorited by 2 Pinsiders


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#1 7 years ago

Bought a replacement beacon assembly, installed it, activated multi-ball and nothing. Go into adjustments menu to make sure beacon setting is on and while scrolling thru the menu the beacon starts working without making any adjustments. At first I thought "cool, it works!". But it wouldn't turn off. I turned the pin off and back on, played a game and it just keeps going (when power is on).

I go back into the menu and turn the "police light" setting OFF and it continues running.

Now I'm used to things NOT working, but here I have something that wont STOP working. Is this similar to a stuck-on coil? It's odd that it still runs after turning the setting off. Should I start with checking the transistor or is this a cpu problem? This light connects directly to the power supply (which is new) and the cpu.

Don't know if it matters but the old beacon was smashed off by a punk with a hockey stick on location, possible short?


#3 7 years ago
Quoted from LTG:

A couple thoughts.
Does a relay soldered to a small board get enabled to turn it on ?
I'd be sure it hasn't become magnetized, or the transistor that drives it isn't bad.
If the beacon is kind of direct drive from a transistor - check that next.
The beacon assembly - be sure it doesn't have anything wrong which started your problems.
LTG : )

No relay or separate board. I just checked the transistor and it's reading good. The beacon assembly is from Pinball Toppers, it works as it should, the problem is it's getting constant power.
I guess I have to dig further upstream.

2 years later
#5 5 years ago

I can't remember exactly what I did to get it working, but I did replace a few bad transistors on the cpu board. I would check there first.

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