Blue light on bottom of tv

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

The capacitors on the power supply need to be replaced. When you take apart the TV, and then remove the power supply (it's the section that the power cord goes to) and open it up. Look for the little can capacitors and see if any of them are bulging on top. That is the sign that they've blown. Replace the big ones (about 5) for about $5 in parts. Reassemble and test by turning it on. Search for YouTube video on how to replace capacitors. Check for warranty service first if still under the mfr warranty or extended warranty.

Check that all cables are intact and plugged in correctly. (VGA, DVI, Antenna etc.) Did you place batteries correctly?
There might only be one button that turns the TV on/off (usually a red button in the top of the remote).

Since its a Plasma or seems to be you got this in the wrong area-a glitch on the site here often does this---if a flat screen set--Plasma or LCD post the question with model number in the text under Flat screen Televisions so a expert can assist you.

probably a bad VX or VY card.

If your TV is under warranty... call samsung for solution

I have a Samsung DLP HLN617WX/XAA. After turning off by itself, the three indicator lights were blinking... signifying a defective lamp. I've re-seated the old lamp several times with no change. I bought a new lamp and reset the lamp hours through the "service menu" with no change. My television is still turning itself off and still blinking the same indicator lights. What should I look at, next?

check the power inverter on the power strip. also check the caps on the board and if any of those caps have a round top it is bad and needs to be replaced. i hope this helps.

use the blue (p.size) button on lower left of remote control

all u have to do is pick only one code and go with that one if it doesnt work i will send u a code that will work