basic troubleshooting tips

Basic Troubleshooting Guide

No Power – Flashing LEDs

POWER LIGHT

OPC LIGHT

ERROR TYPE REPAIR

- - AC Power failure Loose connection, Power Unit or Main Unit 1(1/sec) - Lamp Failure Loose connection to Inverters, reload firmware, Inverter Unit or LCD Panel

2X - Power Failure Inverter Unit or LCD Panel

2X 1X 13V/UR10V failure Power Unit or Main Unit

2X 2X 3.3V Main Failure Power Unit or Main Unit 2X 3X UR6V failure Power Unit or Main Unit 2X 5X Panel 5V failure1 LCD Control Unit or LCD Panel

1 SOF driver shorted on LCD Panel - disconnect one of the LCD Control Unit cables from panel, if TV power on with backlight or a crack is in panel, replace LCD Panel. NOTE: As final step to isolate LCD Panel or Board problem with Technical Hotline: Attempt Force Power On (ignores errors) • Hold [CH_DOWN] and [VOL_UP] on TV, plug in the AC power cord If TV powers on, check for bad lamps, loose connections to Inverter unit •Enter into Service Mode - Hold [CH_DOWN] and [INPUT] on TV, plug in the AC power cord set “LAMP ERROR” to 0 Always reset “LAMP ERROR” after repairing TV Shuts Down/ Flashing LED

POWER LIGHT

OPC LIGHT

ERROR TYPE REPAIR

2X 7X CPU Communication Main Unit or LCD Controller 2X 7X Audio Amp Error Loose/Damaged speaker wires, Terminal Unit 2X 8X LCD Control ROM Error Main Unit or LCD Control Unit 3X 1X Communication Main Unit 3X 2X Main Failure Main Unit or LCD Control Unit 3X 3X Communication Main Unit 4X - Vsync Error Reseat cables, Main Unit 5X - Monitor Temp Failure2 Main Unit 6X - BD Unit Error BD Unit 8X - Flash Rom Error Main unit or reload firmware

2 TV installation environment – move unit to a different location and retest.


DISPLAY/ VIDEO PROBLEM

Check for:

[ ] No backlight, display ok [ ] No OSD/No Menu- check if TV is in public mode

[ ] No display, backlight ok [ ] Very dark picture

[ ] Inverted Picture [ ] Distorted Picture

[ ] Lines in picture [ ] Dark picture on left or right side of the screen

[ ] Inaccurate color [ ] Fine line in Picture

REPAIR LCD Control Unit AV/Terminal Unit Main Unit LCD Panel

Note: Check for damaged LVDS cable

Check all INPUTS for video Check LCD Test Patterns in Service Mode; confirm video is ok on test patterns (no lines, bad pixels or distortion)

Confirm public mode is reset and perform Industry Init

NO PICTURE / SOUND OKAY

[ ] Confirm Backlight is on, if no backlight, Inverter Unit or LCD Panel are bad

[ ] Confirm Connections on Inverter Unit, also check for loose ground screws

REPAIR AV/Terminal Unit Main Unit

Note: Check all INPUTS, if video ok on any input, confirm menu settings for the non- working input Check Signal Source - Cable/Cable Box, DVD, Video Game, Signal Distribution device.


SNOWY PICTURE

[ ] Check Antenna/Cable selection in Setup Menu-EZ Channel3 [ ] Home [ ] Store [ ] Air [ ] Cable [ ] Analog [ ] Analog/Digital [ ] Digital 3 Incorrect Antenna/Cable setup perform Channel Scan

REPAIR AV/Terminal Unit Main Unit LCD Control Unit

Note: Check all INPUTS Check “Signal Strength” under Antenna Setup-Digital programming Check Signal Source - Cable/Cable Box, DVD, Video Game, Signal Distribution device.

No Dig i t al Sig n al [ ] Always [ ] Intermittently [ ] Failed to receive broadcast E202 [ ] No broadcast now E203 [ ] Check the Antenna/Cable selection in Setup Menu-EZ Channel4 [ ] Home [ ] Store [ ] Air [ ] Cable [ ] Analog [ ] Analog/Digital [ ] Digital [ ] Confirm Broadcast Channels for location – customer should have listing or check online

[ ] Confirm latest version of Firmware 4 Incorrect Antenna/Cable setup perform Channel Scan


Note: Check all INPUTS Check “CH Memory” in Setup Menu – CH Setup programming –“Skip” should be off Check Signal Distribution device or coax cable


SOUND PROBLEM

[ ] Confirm Distorted Audio

[ ] Check for Low Audio

[ ] No Audio – Check “ Variable” selection in “ Output Select” programming- should be “ Fixed”

[ ] Confirm latest version of Firmware


Note: Check speaker wires for loose connection/damage Check all INPUTS Check Signal Source - Cable/Cable Box, DVD, Video Game, Signal Distribution device

REMOTE CONTROL UNIT DOES NOT OPERATE

[ ] Confirm TV responds to remote

[ ] Check FUNCTION selection on Remote is set correctly to TV

[ ] Check batteries are inserted correctly

[ ] Confirm Battery strength

[ ] Check for damaged cables to RC/LED unit

[ ] Check for any fluorescent light/ IR interference near the remote control sensor3

[ ] Confirm latest version of Firmware

REPAIR Update Firmware Install IR Filter

Note: Unplug TV for 20sec, then using remote, power TV on, if unit powers on Remote ok, there is some interference in TV installation environment.

5 Place front of remote flush against IR sensor of TV (trying to block any interference), confirm function of remote, if ok, there is some interference in TV installation


DEMO MODE IS ON

Translucent OSD message may appear across the top of TV screen indicating the LCD size class and other TV specifications. (ex. “40” CLASS ASV SUPERLUCENT PANEL FULL HD 1080P UD SPECTRAL CONTRAST ENGINE”)

REPAIR Turn DEMO mode off

basic troubleshooting tips

Documents