Samsung PN42A450 Plasma TV Won't turn on....

if your plasma tv is not gurantee and company is not going to repalace it the price of a plasma panel more or less is about 70 %
of a new plasma tv this means that if a plasma tv is 1000 usd you have to pay at least 700 usd

Cause to this fault to a plasma can be many. It is not predictable, as the set is hit by lightning stroke. It will be best to contact any experienced service technician to get it repaired. If you wish to get some details about the repair and faults to plasma displays, check the site linked here. Almost all plasmas, irrespective of brand will have the same structure and fault symptoms. http://electronicshelponline.blogspot.com/
Pull up previous posts or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

Hello,

That TV is covered under a class action settlement from Samsung due to power supply issues. You should be able to get the unit repaired free of charge by contacting Samsung. You can get more information about the class action settlement here:

http://www.ccl-la.com/blog/index.php/samsung-has-reached-a-settlement-in-class-action-lawsuit-over-faulty-tv-power-supplies/

You have problem with the screen board this is located on the top and corner of your screen. The slight solution to do this is try resetting the connector on the main board and the screen board and the screen. it might works or not. Or re-soldered the part on the screen. If the symptoms look for service personnel to do it for you.

Tries tv unplug,replug it back again like a hour later for a tv resetting back to the factory setting.Tv should work again,if not.Tv have a power supply board problems.Tv was bought under a year old take ur tv warrenty repair or take it back where u bought trade it in for another tv.

clean the touck pad keeyboard

Possible burned out light source or power supply. See if bulb is replaceable(SEE MANUAL). UNPLUG POWER, Look for burn damage to bulb. Do not touch bulb with bare hand. 

U have Convergence prob.Go to menu setup look for covergence,see no convergence,U have an open Fuse it dead(FL231)located right side of the Flyback Transformer.There is 3 in a roll small brown rectangle looking caps,but they are Fuses,the one in the middle it dead.

take the color to b/w and retune

Try pressing the P-SIZE button on the Samsung remote until you get the picture size you desire.