Read LG 50PW450-TD (CHASSIS:PA11A) Service Manual online
Making
- 6-2
Revision
PDP TV
Symptom
A. Picture Problem
Control Board Checking Method(50R3)
Repair Process-Reference data
A13
▣ Checking Method
A13
① Check input voltages(5V of P105 / 18V of P2) at control
board.
board.
② Check LED is on.
③ If LED doesn’t work, check crystal X1 output.
④ Check 3.3V, 5V IC.
⑤ Check MCM at VS_DA by using digital multi meter.
③ Check Crystal(X1)
① Check Input voltage
④ Check IC ( IC53, IC51 )
Check oscillation of Crystal
(Normal: 25 MHZ)
MCM Check point
(+)VS_DA / (-) GND
(Normal: 3.3V )
⑤ Check MCM
3.3V
Pin 14,15 : 18V
IC51
IC53
P2(18V)
Pin14, 15
5V
3.3V
GND
P105_FL1,FL2(5V)
② Check LED On
2010. 11. 16
Click on the first or last page to see other 50PW450-TD (CHASSIS:PA11A) service manuals if exist.