The TV is on for less than an hour then goes to stand by mode and we can't get it to turn back on. The light goes from red to blue temporarily without picture or sound then reverts to the red stand by light again.
I see so many here with no sound/nopicture issues:
ISSUES:
1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.
Answers to issues:
1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.
2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.
Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.
What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.
3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.
4. Safety first--no TV set is worth getting injured or even killed over.
SOURCE: NEC PXT-42SV1B Plasma has picture 10 seconds
Sounds like the high voltage power supply is in the process of dying.
This would leave the sound unaffected.
I don't know if you have a separate supply for this or if a part of the main supply.
If you remove the back (after unplugging and allowing a couple of hours to pass), check inside to see if there are two boards with larger components on them.
If so, look to see if one of them has more to do with the plasma display than the other; this would be the high voltage source.
This is probably repairable but you might want to check on repair vs. replacement cost before shipping it to anyone.
SOURCE: NEC widescreen tv sound but No picture model no.
if its always 1min. work b4 the picture offf ,check ur power filter capacitors & if only sound comes when power on change ur inverter
SOURCE: Is there display drivers available
I'm sorry for the difficulties you're experiencing in viewing the Desktop correctly when connecting a computer to the TV. Unfortunately, there are no such drivers available for TV to make it compatible with a computer.
Please understand that the image from a connected computer will not display in full screen because of the difference between the display resolution of the television and the available resolutions on the computer. Setting the WIDE MODE (Zoom) option on the television to Full 1 or Full 2 will stretch the image to fill more of the television screen but will not fill the entire screen. This is normal operation.
I have searched online and found that 1024 X 768 will provide better experiencing than other resolution. It is required to set the resolution in the computer before connecting it to the TV. Please install if graphic card updates available from the computer manufacturer so that it will give option to select resolution in some cases.
Thanks for understanding. Please let me know if you require any clarifications.
SOURCE: Is there display drivers available for my NEC
There are no display drivers for the NEC Plasma TV model PXT-42SX1B. It is up to your Display Adapter or Video Card to assign the monitor a resolution. Your monitor also has a menu setting for the resolution which must be set to the same as your computer's resolution. Hope this helps.
I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514
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