LG 47LB6500.ATR - No Picture/No Back light but has standby voltage
My living room TV kaput after lighting storm along with Cable Set-top Box connected via HDMI-3.
So, with my little knowledge of electronics I thought of fix it by myself.
First, I searched forum for any case registered existing if anyone have same issue/symptom.
Found some few case near matching But not really the same !!!
Now decided to open a new thread.
Brand: LG
Model: 47LB6500.ATR
Panel: LC470DUH (FG)(P2)
Main Board: EAX65363904
Problem:
No Back light
No Picture
No Standby light (Red LED)
Sign of dead !!!
Observation:
HDMI-3: D3214/D3215 - Burnt - close look with Magnification glass
Power Supply Reading as below
Input Power Supply - 240v
Connector P201
PWR-ON - 3.5v Ok
3.5v - Ok
12v - Ok
24v - Ok
P-DIM1&2 - 0v
DRV-ON- 0v
P801
LED strip: LED OFF - (Supplied 3.5V with 10K Resister to DRV-ON || All LED Turned ON)
C610
Power Capacitor : 358v
++++++++++++++++++++++++++++
Main Board Voltages
Enable voltage is 0.8v
All below IC input voltages are Ok but output 0v which is responsible to generate 3.3v,5v,1.5v,1.1v
IC2300
IC2334 (Typo in Schematic IC2304)
IC2303
IC2301
Since there was no output of 3.3v,5v,1.5v,1.1v from above ICs, IC2303 has no output of 2.5v
----------------------------------
IC3000 input Vdd 3.5v is good
But from IC3000 - enable pin feeding to above ICs were absent (0.8v) and also this IC is heating above normal.
Any help would be much appreciated...
My living room TV kaput after lighting storm along with Cable Set-top Box connected via HDMI-3.
So, with my little knowledge of electronics I thought of fix it by myself.
First, I searched forum for any case registered existing if anyone have same issue/symptom.
Found some few case near matching But not really the same !!!
Now decided to open a new thread.
Brand: LG
Model: 47LB6500.ATR
Panel: LC470DUH (FG)(P2)
Main Board: EAX65363904
Problem:
No Back light
No Picture
No Standby light (Red LED)
Sign of dead !!!
Observation:
HDMI-3: D3214/D3215 - Burnt - close look with Magnification glass
Power Supply Reading as below
Input Power Supply - 240v
Connector P201
PWR-ON - 3.5v Ok
3.5v - Ok
12v - Ok
24v - Ok
P-DIM1&2 - 0v
DRV-ON- 0v
P801
LED strip: LED OFF - (Supplied 3.5V with 10K Resister to DRV-ON || All LED Turned ON)
C610
Power Capacitor : 358v
++++++++++++++++++++++++++++
Main Board Voltages
Enable voltage is 0.8v
All below IC input voltages are Ok but output 0v which is responsible to generate 3.3v,5v,1.5v,1.1v
IC2300
IC2334 (Typo in Schematic IC2304)
IC2303
IC2301
Since there was no output of 3.3v,5v,1.5v,1.1v from above ICs, IC2303 has no output of 2.5v
----------------------------------
IC3000 input Vdd 3.5v is good
But from IC3000 - enable pin feeding to above ICs were absent (0.8v) and also this IC is heating above normal.
Any help would be much appreciated...
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