(Topic ID: 317443)

Lectronamo displays flicker when sound chimes

By c0wb0y

1 year ago



Topic Stats

  • 6 posts
  • 4 Pinsiders participating
  • Latest reply 1 year ago by c0wb0y
  • No one calls this topic a favorite

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#1 1 year ago

I have a Lectronamo that plays 100%, but recently the score displays began to flicker when a sound is played.
When the sound completes, the displays are clear again.
This happens on bootup when it beeps (after the MPU startup beeps) and during a game.
Where do I start?

#2 1 year ago

Verify your power supplies are clean. Minimal AC on DC supplies, verify caps are good on the sound board and SDB.

#3 1 year ago

I'll check the sound board caps next.
The same issue occurred before and after a new power rectifier board was installed.

#4 1 year ago
Quoted from c0wb0y:

I'll check the sound board caps next.
The same issue occurred before and after a new power rectifier board was installed.

Rectifier board doesn't have the caps on it, they're on the solenoid driver board.

Disconnect the sound board completely (power and ribbon cables). See if the same thing with the displays happen.

What mpu board do you have installed in the game? What displays?

#5 1 year ago

The rectifier board has no caps. The solenoid driver board has the filter caps for the display voltage and the 5v. Good idea to change both if theyre original.

1 month later
#6 1 year ago

I placed in an extra SDB and the issue was resolved. Will be getting replacement caps for the first SDB. Thanks to all who responded!

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