(Topic ID: 253464)

Tech help – buzzing sound Mata Hari

By crashpad

1 year ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 1 year ago by crashpad
  • Topic is favorited by 1 Pinsider

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#1 1 year ago

Hello,

I am back to trying to get my Mata Hari working – it has had a flipper issue since I got it – flippers are dead – and since I am learning about board repair, had been planning on going what I perceive as the easier route for now to get it playing again.

Fellow Pinsider patrickvc here helped me isolate it to the Solenoid Driver Board because we swapped an Alltek I have in my Mr & Mrs Pacman and the flippers worked after trying that.

But now the game won't boot or intermittently boots, so I swapped in the Ultimate MPU Bally/Stern Replacement board, cleared the memory, changed the game to MH.

Everything fired up and tests fine.

But there is a nagging buzzing sound at all times.

As a newbie to all this, and only intermittently trying stuff here and there myself, what would I need to try and look at to determine what this is or if it's okay to operate the game like this?

I was planning on buying another Ultimate MPU board and SDB board from Alltek, but if something else needs repaired first, I don't want to blow something up by operating it with this condition if I shouldn't.

I appreciate everyone's help here.

Thanks!

#4 1 year ago
Quoted from Quench:

Fist step in diagnosing this is determining where the buzzing noise is coming from.

Thanks Quench – I will try to isolate where it is coming from and report back.

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