The set received for repair in dead condition. Was damaged by thunderstorm; the party said. No Power LED at the front panel, or any indication at Power Up.
The main board model number is: BN9404619V
The SMPS [Power] board model number is: PS1V680511B
Disconnected the power to TV; unscrewed out the power board from from the set, and checked it.
As usual as everybody do; I too checked the AC mains fuse at the main power supply regulator [SMPS] board. The 5Amps 250V Glass Cartridge type fuse was blown out. A clear indication of shorted component/s at the SMPS board.
Checked the DC resistance across the main filter capacitor.
Found abnormal. Less than 5 Ohms, measured for both the meter polarity.
Indicates a direct short-circuit due to any shorted component/s at the primary side of the SMPS section circuit itself.
Checked the mains bridge rectifier first. OK.
Checked all the capacitors [non-electrolytic] connected across the AC power supply.
All was found OK.
Checked the MOV [Metal Oxide Varistor]; an overvoltage protection device; connected across AC found shorted. Clear indication that the set has hit by a very high voltage spike due to lightning.
De-soldered out the MOV from circuit.
Now checked the DC resistance across the AC main capacitor. The short circuit still persists.
The only component that can be shorted other than this component is the STR. De-soldered out the STR from the circuit, and now there was no short circuit.
Replaced both STR and MOV. As a precautionary measure; I’ve replaced the main filter capacitor too; as it might have already hit by a high voltage spike. Even though it will work now; might poise some problems.
POWER [SMPS] BN9404619 (includes the back-light inverter)
AFTER REPAIR
Original Remote control model number to this TV is
AA59-00499A [shown in the above picture]
Universal remote control set-up codes
0030 0049 0050 0066 0076 0101 0102 0119 0143 0152 0154 0166 0181 0195 0209 0217 0240 0307 0318 0365 0379 0414 0421 0488 0492 0601 0624 0637 0642 0827