Turn on TV hear a buzzing and then the TV cycles off and on again

Owner's manual? No manual? you may want it anyway in the future. Try: manualslib.com.
Do you have water? Is the water supply valve turned on, both hot and cold? My guess is the last spin cycle never completed to the machines "satisfaction". There may be a problem with the discharge hose, or the pump that moves the water from the outer tank to the discharge drain is not working right. There may be a belt problem or a motor drive problem.

Try another input and another source such as a DVD player. If you still get the buzzing sound, you could have a faulty power supply output or a fault in the audio circuit of the main board.

never buy gateway again i have the same problem, so tell all people you know dont buy gateway and they will fail.

The buzzing is the ballast arc gap,normal sound. When the tv starts does the lamp start to come on. Can you see any light from the back? Sounds like bad ballast. Unfortunatly this part is no longer available. the light engine will have to be removed and sent to Toshiba to be rebuilt.

The same thing happens with my dishwasher. I have made it work by doing the following. When you start up the cycle, turn the dial to just a tick before "start." If you hear the buzzing, but no water is running, unlock and then lock the dishwasher door again. This usually gets it running. If it's still not running water, unlock, advance the dial a little bit, and lock again. This should work. You need to be around for the early parts of the dishwashing cycle because this machine tends to stop up and buzz without running water until it gets past "short wash." Every time this happens, do the same thing, unlock and lock, and advance the dial a little when necessary. Once you get past "short wash," it should complete the wash without intervention.

You are hearing the spark gap mounted on the lamp ballast board. If you can hear that sound, that means everything in the lamp driver circuit is working except the lamp!

Get a new lamp.

michtech

Hi.
Sounds like the valve that lets the water in on the dispensing cycle is sticking, if you can hear the valve buzzing i would certainly suspect it to be faulty

I wrote a guide on how to fix this problem. It's really easy to do and only costs £1 (about $1!). You can view, download and print the guide here - http://www.scribd.com/doc/13515584/Polaroid-TLU03711C-Replace-Capacitors-Guide

I have the same problem I can hear buzzing over the volume of the tv into the 30 range. I've had a tech out 3 times and he's coming out for a fourth. He's changed to power supplies and is bringing the 3rd next visit. From what I've read it has either to do with power supplies or grounding strips.