Electrograph DTS4225PTD Plasma TV 42"

esupport.sony.com

Check and replace its main board. It is faulty. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

It is not the fault with the power supply board. It switches ON, and supplies to other parts, but, any component/s to the other circuit part provides an overload to it, and its protection circuit activates and swishes it OFF. That's happening now. Contact any service technician to make it confirm the defective part.
If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

For more details type in this site name "Electro-help" (DO NOT copy and paste the site name from here. It may lead you to wrong place) to search box of your search engine [not in the address bar of your browser], and press "Enter". It is an electronic equipments service help site.

Note the position of hyphen in between words in site name. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts.

You can locate this site, either at the bottom part of first search page, or at the top of second.
Detailed descriptions are there to help you.

I have a 42" Electrograph plasma and it has a 2" black vertical line on the left side of the screen.

check the cables going to your unit, if the graphics are ok the tv is ok, hast to be a bad connection.

what kine of additional plug i need to plug in i am having problem learn how to trouble shooting the power in the tv also i am having problem with the tv tube i am trying to learn how to do these thing so that can help myself and my letter son i have no money ta this time is there anyway that you all can help me thank you

you could buy an all for one remote control. i bought the kameleon 6 for 1 and its very easy to programme. just put in one of the codes supplied in the book for the brand of tv you have, once youve put in right code there should be no problem setting up the tv. The best place ive seen for the kameleon remotes is ebay, very cheap compared to what i payed. hope this helps

Try to replace the Logic Board, about 50% chance to fix the problem.

my brother get your tv checked by a tech the tv is having problem in the IF circuit.good luck.