PN51e450A1FXZA black screen - PN Samsung Televison & Video

I just repaired on of these I think it is one of the power transistors, my transistor was dg302, you can buy them on ebay.

Plasma TV Repair No Image No Picture on Plasma TV Screen How to Replace...

Samsung PN51E450A1FXZA User Manual and
Samsung PN43E450A1FXZA Quick Start Manual

Replace the TV, this is old tech.

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD & Plasma TV screen are given with illustrations. You can get an idea about the fault to an extent
.

Click on the link below, and search that PAGE for the word "smart" ... but without any quote marks!

https://www.google.com/?gws_rd=ssl#q=Is+a+PN51E450A1FXZA+a+smart+TV?

resister fail take to repair shop.