LG TV. No sound or backlight but display OK. Main board / power board?

LG TV. No sound or backlight but display OK. Main board / power board?

Hi

ANSWERS:

"@arkham24601 the inverter circuity is on your power board. Let us know what chassis your TV is so we can look for any ideas about what may have failed on the board.

Update (06/10/2017)

The really determination for which board to replace would depend on the voltage measurements on your power board.

If the voltages are good, it's your mainboard. If they are not, it's your power board.

Let us know what you find."