Lg Lj7 Chassis Service Manual -

TDA7297 or similar dual-channel IC delivering 5W to 10W per channel.

Diagram showing how to disassemble the TV cabinet, stand, and panel.

) and then drops, it indicates a protection circuit shutdown due to broken LED strips. Replace LED strips. 4. Picture But No Sound Check: Audio amplifier circuit on the main board. Check: Speaker connections. Disassembly and Safety Procedures lg lj7 chassis service manual

Compliance with CE, IEC 60065, and EMC regulations.

12V and 24V rails to power the mainboard audio amplifiers and processor logic. TDA7297 or similar dual-channel IC delivering 5W to

resistor to jumper the Standby voltage pin to the Power-On (PWR-ON) pin. If the 12V and 24V rails spring to life, the PSU is fine, and the LJ7 mainboard is dead. Symptom 2: Sound but No Video (The Flashlight Test)

): Selects the parameter (e.g., V-LIN, V-SIZE, H-PHASE, R-CUT). Modifies the value of the selected parameter. Replace LED strips

Multi-system support including ATSC/NTSC-M or DVB-T/C/S depending on the localized market variant.