Samsung ef117 Bullettin

If you are requested service about this problem, please repair the monitor with below mothod.

Product Month : - Aug. 2000

ELECTRONICS

Product : 19" CRT monitor Bulletin No. : 01-C/M-E0064

Model : PN19MT Bulletin 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,

Model name : PN19MT (S/T 96P)

Solution Remove the resistor R624.

SERVICE BULLETIN

26-Feb-02

ECN Date :

26-Feb-02

Application Date : Feb.26,2002

( Interchangeability Code : * I.C )

Location OLD (before) Parts NEW (changed) Parts *

No. SEC Code Description SEC Code Description I.C

Type A type B type C type D type E type F type

Interchange OLD Early OLD Early OLD Early OLD Early Parts Addition Parts deletion

Type Code

(* I.C ) NEW Late NEW Late NEW Late NEW Late

Application Reference ( ) Only Defected sets ( ) Whole sets ( )
Attachment Schematic Diagram ( ) Component Lay-out ( ) Exploded View ( )

Published by : C.J.Oh Checked by : C. K.Park Approved by : Y.K.Yoo

(Parts) (Prod.) (Parts) (Prod.) (Parts) (Prod.) (Parts) (Prod.)

Mechanical Diagram ( 0 ) None ( ) Others ( )
all Serial No. (~ from)

(None → New) ( Old → Del. )

Revision (V8.1 : July 30, 1997) ... Customer Satisfaction Group ( Pages : 1 of 1 )