My Zenith 27inch B28A11Z keeps powering itself off. When I first turn it on it makes a popping sound sometimes for 5 minutes before it will act like it is trying to turn on. Then eventually it will come on, but may turn off every few minutes at times. Then other days it stays on for hours(not lately), but it is getting worse.
Any solutions, could it be something simple like a fuse?
Re: Zenith 27inch B28A11Z keeps powering itself off
From the way you describe the problem, it seems you have a high voltage
leak. To check this, make the room dark and look into the back of the
TV while turning it on. If you see something like lighting jumping
around you have this high voltage problem. The TV will eventually
destroy itself under this condition. I would suggest not using it until
you get it repaired. The repair cost will be much lower if the TV is
still working when you take it in. The high voltage leak will destroy
more parts and cause the TV to stop working. Then it will blow a fuse.
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Sounds like a CRT is arching internally. to confirm remove the covers to have a view of the picture tube necks- in adimly lit room you should see bue arching in one of the tubes. (there are three piture tube with glass necks)
Sound either like a Overheating or a Power Supply Unit issue. You may need to clean the thermal gel off the CPU and heatsink with a small amount of rubbing alcohol and apply new gel. Make sure your fans are working correctly and make sure there isn't any dust under the fan on the heat sink it self, as this will cause overheating issues... Also, if you suspect the PSU you can usually get a nicer one than you have now for $50, so it is better to go ahead and replace it if it is old. The pop sound makes me lean more towards the side of power / PSU but this sound could simply be from the hard drive lossing power suddenly.
Hi, I had the "Ghost In The Machine". I tried out what I descibed in my original posting.
#1. I unplugged The Set.
#2. I pushed in and held in the power button in for about 5 minutes before bedtime. ( The PC trick I learned) I gave it 5 minutes because a tv set has much more power inside it.
#3. I again pushed in and held the power button in again for 3 minutes the next morning.
#4. I plugged the tv in again. The red standby light was lit. The set did not immeadiatly come on when I tried to power it up.
#5. 5 Minutes later I returned and hit the power button on the remote and it came on like nothing ever was wrong.
#6. It has been fine now for 3 days!!! Powers up when commanded and shuts down like normal. It has yet to come back on or act up as it was doing.
I will keep a watch on it and if it starts up acting again I will repost. I hope this information will be of use to anyone who experienced the same problem. It didn't cost a dime, just some patience. Thanks for a forum that people can exchange information and save trouble and money unless all options are exhausted. Bill