(Topic ID: 257395)

PSU5 LM323K Replacement

By wombat

4 years ago


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  • 16 posts
  • 11 Pinsiders participating
  • Latest reply 4 years ago by Crash
  • Topic is favorited by 2 Pinsiders

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    #5 4 years ago

    I wouldn’t.
    1. The heat isn’t an issue. That’s what the big heat sink is for.
    2. The regulator is working. Why mess with it?
    3. The ez part causes the sound board to emit a machine gun sound on power down. It’s annoying.
    4. The LM323K isn’t a significant reason for resets. Connectors cause far more resets than the LM323K.

    Chris Hibler - CARGPB #31
    Http://chrishiblerpinball.com/contact
    http://www.PinWiki.com/ - The new place for pinball repair info

    1 month later
    #8 4 years ago
    Quoted from Crash:

    2. These regulators do cause intermittent issues. For example, I re-capped my power supply in Police Force and am still only getting 4.95v out of it. This is with no 5v loads connected. As a result the game often does not boot.

    That minor voltage variation isn’t enough to cause resets. People always talk about low voltage but there are other factors. I have WPC boards that output 4.85VDC and they run fine in my TZ.

    Chris Hibler - CARGPB #31
    Http://chrishiblerpinball.com/contact
    http://www.PinWiki.com/ - The new place for pinball repair info

    #15 4 years ago

    If you measure the output of the LM723 pins 4 and 5 and the measurement is equal then the regulator is fine.

    Chris Hibler - CARGPB #31
    Http://chrishiblerpinball.com/contact
    http://www.PinWiki.com/ - The new place for pinball repair info

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