LC70lE660U

[charlie555]

I have this TV, standby light comes on with no display. standby lights blinks slowly. please help

[local]

Re: LC70lE660U

Hello!

First round below, then later if there will be more information
The supply voltages should be checked first.The following is based on the service manual should be checked
Since the pins are monitored, this can also provide a starting point


Pins are monitor microcomputer pins unless otherwise
specified.
1 flashes once Inverter/Lamp system failure
2 Power PWB failure Flashes twice
Flash once Power supply error AC_DET error

Flash twice Power supply error UR+13.5V error

Flash 3 times Power supply error D+3.3V error

Flash 5 times Power supply error Panel power supply error

Flash 6 times Power supply error power supply error

Flash 7 times Power supply error power supply
error
3 Main PWB failure Communication failure,

Flashes 3 times

Flashes once Initial communication error

Flashes twice Start-up confirmation communication error

Flashes 3 times Regular communication error

Flashes 5 times Other communication error

4. VerUP executing Green flashes continuously. OFF Sub microcomputer version upgrading

VerUP succeeded POWER (Green) and SLEEP/OPC flash alternately. Sub microcomputer version upgrade succeeded

VerUP failed Green flashes fast. OFF Version upgrade failed

ROM data failure Green flashes fast. OFF Start-up after failing version upgrade
5 Pins are monitor microcomputer pins unless otherwise
specified.
Inverter/Lamp failure, details is detected.
Flashes fast once
H: On
L: Off

Power supply failure, details is detected.
Flashes fast twice
H: On
L: Off

Main CPU Communication failure, details is detected.
Flashes fast 3 times
H: On
L: Off

Other failure
Communication failure details is detected.
Flashes fast 4 times
H: On
L: Off