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Equipment Repairs => LCD TV forum => Topic started by: amennone on February 22, 2021,16:39:40

Title: LG 43LJ594V-ZA, turned off.
Post by: amennone on February 22, 2021,16:39:40

Power: LGP43DJ-17F1

Fault: No power on the secondary.
I have checked diodes and transistors and they are ok. Resistors are o.k.
Replaced IC101 = SSC3S927, IC601 = SSC2016, still no secondary side voltage
I need the schematic and some repair tips.
Thanks and good job .

Title: Re: LG 43LJ594V-ZA, turned off.
Post by: astracat on March 02, 2021,17:07:08

hiya
is in standby or is it just dead,check ic 101 voltages think pin 1 is the start up  pin if so needs aprox 9v on it to start its output usually high value resisters feed it which can go high ,best to check all pin voltages and let us what they are then might be able to help better
regards
astracat

Title: Re: LG 43LJ594V-ZA, turned off.
Post by: amennone on March 07, 2021,13:11:24

IC 101 = SSC3S927
Pin 4      1v2   unstable 
Pin 18    254 v
Pin 2 V   16v   (INPUT)
Pin 12     8v    (Output)

ZD 103  =       0v
ZD 102 =      - 3v8
D 101 =        anode  10v
D101 =         Katode  8v
D107 =        16v
C 611 =       321v