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I have a 26lg30 lcd tv. It would intermittently shut off but now all it will do is illuminate the back light. No display of any kind, no sound. The power light goes from red to flashing blue to a steady blue when the backlight turns on. I can turn the unit on from the remote control so it does recognize the remote.
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What is the model number? If it is only 3 years old, I suspect you have a LCD TV with LED backlight. You quite possibly have a failed LED backlight.
Many LG TVs of this age are starting to fail due to over-worked LEDs in the backlight which create the white light that illuminates the LCD image.
The symptom is TV turns on and off ok, gets sound on the connected video inputs, but has an otherwise black screen with no video on display. You can try to operate the TV near a bright window with lots of sunlight and see if you can perceive a faint image on the screen. A flashlight is often not bright enough to be helpful.
Most of the time, an LED will fail as a short circuit and still allow power to flow through it to other LEDs that will still light up. If one of these LEDs fails as an "open circuit", or if several LEDs have failed in the same circuit, then the power supply detects a fault and shuts the TV down. If the LED is intermittent, you may have flickering. Think of having one light bulb burn out in a string of Christmas lights and having all the lights go out until the bad bulb is replaced... kind of the same thing.
Your TV circuits boards should be fine. In my opinion your TV requires a backlight repair which requires complete disassembly of the entire TV including disassembly of the panel which is a difficult process.
An LED TV is still an LCD TV, just with LED backlighting. That model is an LCD TV. The difference is in the backlight. Both LED and LCD TVs use an LCD screen. LED TVs have LED backlighting of the LCD screen, which saves energy.
There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. http://en.wikipedia.org/wiki/Capacitor_plague Please post back what you find.
reallyme07, sounds like a "thermally intermittant solder joint" on one of the circuit boards (switch-mode-power-supply / inverter-supply) that are a key component used to light up the "cold-cathode-fluorescent-tubes" that supply "WHITE LIGHT" to illuminate the LCD panel. you didn't state what you would like to do or how to get it repaired?? Do you have warranty on set? how old is it? The same technology is used in small screen LCD computer monitors. you may want to visit YOUTUBE and search for and view the longer video clips of LCD monitor disassembly and repair videos FYI. The same kind of problems exist for them as do your lcdhdtv. In any case, a tech type person will need to fix it by an IN-HOME VISIT or CARRY-IN to the shop. I'm louie12fix on fixya or [email protected] Please rate this response if possible. Bye for now.
hello try changing the picture ratio...what i mean is try 16.9 widescreen or 4.3 ledder box the tv is tryn to produce a pic bigger or smaller than what you have keep tryn different picture ratio's
There are 2 kind of LCD vision, one have Bulb (its bit older ersion) and 2nd LCD have Back-Light for illumination. LCD with Bulb calls "LCD Projection" and back-light LCD calls "LCD TV".
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