I had a similar problem where the TV would turn on then shutoff when bumped or over time. The clue was a "tick" sound when it shutoff. Unplugging and reconnecting the power cord go it going again for a few minutes anyway.
I took the unit apart and found the solder connection on the power supply unit was cracked where the main transformer attaches. The solder connection joins the PC board. I suspect the weight causes the joint to stress crack. This is easy to fix by removing the power supply and touching up the solder connections around the transformer. I'd check this first as it is very difficult to locate power supplies and other parts.
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Installation 1. Insert Batteries into Remote Control 1) Remove the battery cover. 2) Insert two size AAA batteries corresponding to (+) and (-) marks on the battery compartment. 3. Connect power cables Connect the power cord to the LCD TV then to a proper AC outlet. IMPORTANT: The power input voltage for TV is 120Vac, before beginning; make sure all devices are turned off. 4. Turn Power On Press the power button on the right side of the LCD TV, or press the power (Red) button on the remote control. 5. Select input source for the LCD TV using the OSD menu or remote control direct select buttons 6. If connecting to Antenna, Cable or other RF source on TV inputs: scan and edit available channels. 7. If connecting to a PC(VGA): For the best picture quality, set the timing of your computer to 1366 x 768 at 60Hz. Refer to the graphic card's user guide of your computer to set this timing. if u need further assistance contact me through fixya . ok
Hello, two things, one if the unit gets stuck there meaning that the W stays there and it shows that on the screen thank your main board is stuck on the boot mode and you will need to replace. The second is if the W goes away than you need to see if you can plug something in and change the input mode (even if you can't see anything on the screen) so that you can see if there is any sound coming in to the unit. If this is the case than you are looking at dead inverter board. If you would like to further troubleshoot than please email me at firstname.lastname@example.org for further assistance. If this information was useful please rate me on this webpage.
It seems that your unit has some sort of Video side, PSU fault, or a problem to the Video section that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur.
You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.
Hello, please email me some more information about the TV to email@example.com, I will need the model#, serial#, and the TW#, all located on the back of the unit. I can assist you as far as to check to see if you need a firmware update and if you do I will provide it for you.