TO SOLVE NO PICTURE, BACKLIGHT ON, AUDIO ON.
Is possible that in some TV sets the IC1705 is damaged due to an excess of current when TV is
switched ON, and for this reason doesn’t appear picture in the screen.
Inspection:
With TV set in ON condition, check if voltage in “LCD+5V” (SIDE A, see Figure 2) is +5V (+/-0.5).
In case of reading lower voltage than the specifi ed means that IC1705 is damaged and LCD
controller pwb is not powered properly. For this reason doesn’t appear picture in the screen. In
this case proceed as follows:
Countermeasure
1.-Abolish C2311 from Side A (See fi gure 2) and C2313 from Side B (See Figure 1) of MAIN PWB
(XD603N*), for improving rush current over the IC1705.
LC26P55EE LC32P55EE LC37P55EE LC26P70EE LC32P70EE LC37P70EE
LC26P55EF LC32P55EF LC37P55EF LC26P70EF LC32P70EF LC37P70EF
LC26P55EI LC32P55EI LC37P55EI LC26P70EI LC32P70EI LC37P70EI
LC26P55EK LC32P55EK LC37P55EK LC26P70EK LC32P70EK LC37P70EK
LC26P55ERU LC32P55ERU LC37P55ERU LC26P70ERU LC32P70ERU LC37P70ERU
