Proscan 42LA45H 42 in. LCD TV won't turn on, no red led when plugged

Is there power to the outlet? Check your circuit breakers!

If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

That is not the problem, a circuit board is shorted out and it shuts off as a safety function. The cost to repair can be as high as $500.00 New TV's are very cheap I would just replace it. Proscan is not the best brand for reliability, Vizio is better and cost only slightly more at walmart

Most likely it's the power supply board that went out. (part of it still works is why you get the blue LED when you plug it in.)

If you decide to try to fix it yourself, BE CAREFUL! The power supply board has capacitors that can hold high voltages for many hours after the TV's been unplugged.The equivalent of sticking your finger in a light socket.

You'll need the part number off the power supply to get a replacement.

U check the power source like the power a/c outlet?Yes?Tries tv unplug,replug it back like about an hour later.The tv should resetting itself back to the tv factory setting,tv now should have power again.Not.The tv have a power supply board problems and the causes.That the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

we had a tech out. replaced main board at suggestion on phone diagnosis. NOPE. tech tested and the entire TV needs to be replaced. still waiting

you can replace the plug and resistor but make sure you remove any carbon that may of happened,you should be able to scrape it off.if you dont have any luck repost with part number.

I am sorry Sir, the display panel is bad. If you purchased it new, it should under factory's warranty. Please call Proscan for a warranty repair.

Proscan Customer Service:
1-800-968-9853 (US and Canada)

Try shopjimmy.com ,Good Luck

Here's the link to all Proscan TV Manuals =>

http://oncorpus.com/down/down.htm

Here's the link to your Proscan model#42LA45H 42" lcd tv =>

http://www.oncorpus.com/down/ENG/42LA45H%20English%20UM.pdf