Product : 19" CRT monitor Bulletin No. : 01-C/M-E0064
Model : PN19MT Bulletin Date :
ECN Date :
SUBJECT : Humming noise from power supply in DPMS mode
Background : The Model PN19MT has some humming noise at power supply when the monitor is in off-mode.
It is caused by the power smart IC that is switched to audio frequency(500Hz) when it enter into off-mode
We are going to modify the circuit at March,
If you are requested service about this problem, please repair the monitor with below mothod.
Model name : PN19MT (S/T 96P)
Solution Remove the resistor R624.
