Protron pltv 4250 keeps shuting off

SOURCE: My PROTRON LCD PLTV 32 IS BLACK & DEAD

I had a pwer supply for my Protron 32 inch TV that was not working. I bought the one on ebay and it stopped working after only three weeks. Ultimately I found a guy who could fix my original power supply for a reasonable price. It been working for a year now with no problems. I wish I would have tried him first!!!! If anyone is interested his email is [email protected].

SOURCE: I have broken Protron PLTV-4250 42 in. LCD TV.

I have one but it will not stay on let me know [email protected]

SOURCE: protron lcd tv getting no power

I have the same problem. I am told that I need a new power supply (adaptor) but from what I am reading on the Net, they are very rare and TV repairman told me he cannot find the part. I heard that Protron is out of business.

SOURCE: No power to my Protron PLTV 3250. What can I do

My Protron PLTV - 3250 just went out yesterday. By this I mean it turned on and went out in a few minutes. I left it off and today it completely died. I opened it up because I always think I can repair things. So what I found is a burn mark on the curcuit board of the power supply which is located inside the tv. On the other side of the burn mark is a (zener diode), this diode is burned out and therefore the power supply is not working. I am going to Radio Shack tomorrow Monday Aug. 31, 2009. The diode is very tiny but should be easy to replace with a sauder gun because this diode has place holders to hold the tiny diode in. If this does not work at the top of this page is a link that says power supplies for your tv for sale. I am going to check it out. Anyway just so you all who know about computers= the tv power supply is similar to the power supply on a computer. Just like a computer power supply comes in a case that you install into your computer and then you just connect the connectors to your motherboard and drives. Well in the tv the power supply is stand alone also, you can disconnect the wire connections in the tv and replace the power supply. If you notice the power cable to your tv is the same as a computer power cable, so the power supply in the tv is much the same as a computer power supply. I hope this helps you.

SOURCE: PROTRON PLTV 3750 POWER SUPPLY BOARD REPAIR

if you look at the power supply board you will see an aluminum plate remove the four screws and 9 out of 10 times it is a diode on the board that has gone out. go to radio shack and for 83 cents you can buy one the same size. I personally have tried all the diodes that they sell and all of them that are the same size physically will work. I have three of these tv's and all of them were the same problem. I replaced the diode in each with one of each of the same physical size sold at radioshack and they have been working like new since.