Sunday, January 06, 2013

LG 42PG 60UD _ PROTECT MODE _ TROUBLESHOOTING _ PLASMA TV




PROTECT MODE:  SYMPTOM;

  • After once shining, it does not discharge minutely from module.
  • The Rely falls.(The sound is audible “click”)
  • It is converted with the color where the front LED is red from green.
TROUBLESHOOTING

Is the Power Board normal ?
Yes
Is output the normality Low/High
voltage except Stand-by 5V?
No
Replace power baord


Yes







Is the each connector
normal?
No
After connecting well each connector,
the normality it operates?
Yes
Replace connector.


Yes







Is the Y-Board
normal?
No
Is the  fuse(FS201) on Y-B/D
normal?(In case of open is replace)
Yes
Is the output voltage
normal after remove P209 connector of
Y-B/D?
Yes
Replace
Y-Board.
Yes







Is the Z-Board
normal?
No
Is the Fuse (FS1) on Z-B/D normal?
(In case of open is  replace)
Yes
Is the output voltage
normal after remove
P3 connector of ZB/D?
Yes
Replace
Z-Board.
Yes







Is the X- Board normal?
No
Is the output voltage normal after remove P242  connector of
X-B/D?
Yes
After remove P211 output voltage normality:
Replace Right X-B/D
After remove P23 output voltage normality:
Replace Left X-B/D


Yes







Is the Ctrl Board normal?
No
Is the output voltage normal after remove P163  connector of Ctrl-B/D?
Yes
Replace the Ctrl-Board.


Yes







Is the VSC Board normal?
No
Is the output voltage normal after remove P1001 of VSC Board?
Yes
After remove P1001 normal operation:
Replace VSC Board.


Yes







Is the COF of X, Y, Z
normal ?
No
After crisis COF of each board, check the normality operates.
If in case normality operates, correspondence COF Fail is replace the module.