Pioneer pdp-4271 plasma will not turn on, tried unplugging it and letting it set and plugged back in not turning on, i have checked the outlet for power and it is good also checked end of plug that connects to tv while plugged in and have power but will not turn on.

Does the set have sound with a DVD etc. directly connected to one of the audio/video inputs this set has?

Try restting it by unplugging the tv for a few mins and it should rest to original factory default settings but leave it unplugged 10-15 mins to be sure.

Check that the outlets "GFCI" fuse or reset button hasn't been triggered. If this isn't a GFCI outlet, then verify the breaker is on. If still no luck, verify the device input power i.e. 110/240V

If you need further help, reach me via phone at https://www.6ya.com/expert/william_ecd28f5eabcb9eb6

First check batteries in the remote are charged.Try pushing one of the channel selection numbers on the remote as it may be the off/on on your remote is stuck or has died completely. if this does not fix the problem try unplugging the set from the wall wait 5 mins (approx) and re plug into wall socket and try turning on .

Here is the link for the manual - c ould be a remote set up issue or this could be puffed caps in the power supply - have a qualified tech check that out

http://tv.manualsonline.com/search.html?q=PDP-42A3HD&submit.x=49&submit.y=15

Try this! There should be a power button on the bottom of the panel that has to be depressed for the television to power on. It is the main power supply button and without it there is no power going into the TV.

Check page 9 of this document:

http://www.pioneerelectronics.com/StaticFiles/Manuals/Home/PDP-5020FD_OperatingInstructions0610.pdf

You will see that there is a power button on the bottom right corner of the back of the unit (item 25). Turn the unit on using that first.

Very possible,but yet,this might be the manufacturer defect power supply which they will fix it for you free;but before we jump to this conclusion,you need to test it first:
-Unplug the power cords.
-Unplug the media video cable from the box to the tv.
-Check all the pins on the video cable are in place as well as the connectors both behind the TV and the media box.
-Reconnect the media box and TV with the video cable(DVI+VGA in one) and have at least a video component hook up to it(ex. dvd player/VCR or comcast box) be sure this video player is turn on and running,at the same time,be sure it is under the right video input.
If you have tried the above steps but still doesn't work,call 1-800-pioneer Tuesday-Thursday at7amPST and address your issue to them.
Let me know if you have any additional questions!
solutiondoct

I HAD THE SAME PROBLEM AND I CALLED PIONEER AND IT TURNED OUT TO BE A POWER SUPPLY, PIONEER IS FIXING SOME MODELS WITH THE DEFECTIVE POWER SUPPLIES FOR FREE LOOK ON THEIR WEBSITE

Try turning the power switch to off and unplugging the television, then plug it in and turn it back on. I have had this same problem and this seemed to work for me.