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**Video Poker, Keno, Slots, 21** Gaming machines => Konami Games => Topic started by: Gomyr on October 10, 2019, 03:58:34 PM

Title: Konami Power Supply making noise
Post by: Gomyr on October 10, 2019, 03:58:34 PM
So I am working on the +24V half of this power supply (TDK Lambda VA-26936) and it works!  Yeah!!! 

One problem remains, it's making a buzzing/sizzling  noise that is pretty pronounced.  It SOUNDS like it's coming from the AC input section, but I can't seem to pin it down.

In trying to get rid of this noise I have replaced three of the coils (L1, L2, L3), ALL of the electrolytic caps (even though most were good), and C5.  I even replaced the bridge rectifier (D1).  This is driving me nuts!

Anyone else have any experience with this?  Any help would be appreciated.
Thank You!!
Myer
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