On a Sanyo DP50747 TV. The picture screen goes grey and the sound will go off for 3 or four seconds and then come back to normal as if there is nothing wrong. Green light for OFF or ON does not fluctuate during these events Doug

check your cables there are normally two audio and video , check the video input or press it properly in the TV socket

Most likely you will need to get a diagnoses performed on the set. Your problem could be with either the main board or power supply board. The million dollar question is do you repair or replace? With parts and labor to repair this set, you could come out cheaper replacing it.

try to change the contrast and colour settings on your tv. this could help you get the right colour settings on your screen

Working on same model at the moment - i'd check your power supply to make sure it is getting the right voltages and if it is i;d concentrate on the main board.

thanks,
michael

This is a Sanyo Vizon 50" plasma the model number is DP50747 .. hope this helps the website for this product is www.sanyoctv.com and the phone number is 1-800-877-5032

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Hello,

Yep. The power supply in Sanyo Plasmas are generally prone to failures. It could be a failure in the panel not priming, but I doubt it. Turn the lights off in the room, then try to turn it on. If you see the screen faintly flash, the panel is priming, but it is not coming on. If the screen is lit, but is still "black," then it is a control or digital board. If it is totally black with no light at all, then it doesn't entirely rule out the first two, but makes a power supply failure more likely.

They usually have a lot of heat damage to them. If you have tried unplugging it for 15 minutes, then plugging it back in and it still doesn't work, the it is most likely a secondary in the power supply.

I hope this helps you...

I just had mine fixed and the guy said " ITS THE POWER SUPPLY" tv nows works fine after repairs but my ps3 won't work on this tv any clue or is it just cheap engineering and I just get what I pay for!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

sanyo recommends using the reset button with cable box on, vcr off and press the reset button 2x, then try pressing channel up button if no message appears on the screen. i have not trid it yet... but good luck

SOLVED Turn it on and it turns right off Sanyo dp50747 Plasma TV