I have a 32 inch lcd magnavox tv. when i try to turn on the tv it goes right back off within 2 to 3 seconds. its fairly new tv like 3 yrs old. any idea?

Sounds like a loose contact at its main power regulator board. Contact any service technician. Gopakumar Gopalan Google

bad capacitor

Magnavox has issues with puffed caps on the power supply. This sounds like its a 32 inch lcd tv. I tried searching for a service manual for this and can't find one. If it is an lcd you need to look at the capacitors on the power supply. If they are puffed up, you will need to replace them with equal or slightly larger valued capacitors. The capacitor values are mfd and voltage printed on the capacitors themselves. You will need a soldering iron to replace them. Lay the tv, if it is an lcd, on a flat surface cushioned by a blanket. Make sure the surface is large enough to support the tv frame, as you don't want to cause damage to the panel. remove the back of the tv. There are numerous screws, and once the back is off, check the power supply pcb for puffed caps. This is the board with the power cord attached. I know in magnavox tv there is a cage covering the power supply, so remove any connectors because you will have to flip the cage housing the power supply to get to the caps. If you feel confident, give it a try. Let me know how it goes

chang the electrolitics on the power supply top right most are 1000mfd 16 volt

Magnavox = Philips,for some sets there are software update's available.U can update te TV via USB.

when i turn my 32 inch VIVIO plasma tv on it turns pff by itself. i want to know why this is happening

if you have back ground of tv repair, remove back cover but you need tools and tester, check heater line from crt ckt board going to horizontal section.

Hey! That's kinda neat. Sounds like multiple problems, starting with convergence.

$300 + fix. Perhaps time for a new TV?

You have the picture in picture on and the second picture is black because there is no input source plugged into the second input.

In your manual, look up the picture in picture functions and how to control them. you should also be able to change that second picture to see the main feed and swap between them.

Good Luck,
Charles