The volume turns down by itself. If I try to turn up again it just goes back down by itself again. I tried unplugging tv but it just does the same thing over again.
Take the batteries out of the remote or cover the IR emitter to determine if the remote volume button is the problem. If not then check the button on TV utself to make sure it's not stuck
SOURCE: TV has green sceen and turns off by itself
dont do nothing with that tv go and buy a new one and thats all...good luck
SOURCE: TV Turns Itself Off
That set is a CTC197 chassis with a common problem - flyback or more commonly referred to as the FBT...
The FBT is a high voltage transformer which delivers a great deal of voltage to the crt to light the tube. The FBT is RCA p/n# 237502 and a ring test can confirm its failure. Another shortcut technicians use is to unsolder the collector of the HOT and power the set. If it powers with up and has audio you're in business, just replace the FBT and it's recommended to replace R14704 its an 82k ohm- 1/2w resistor and C14710 a .01/1kv cap as well. I believe if you order these as a kit, (ie: original RCA FBT), the two other parts are included - but ask to make sure.
You might also check for continuity across E & B of the HOT with a multi-meter while you're in there and if you get any resistance at all the HOT is shorted also... Or for simple reliability just replace it anyway.
Hope this helps!
Bill
SOURCE: 65S500 will not turn off
Check to see if you have it set to do the Magic Focus on turn-off. It is in the menu under setup.
SOURCE: ViewSonic N2750w 27 in Volume turns down by itself
Could be a problem with the down volume button on the tv. the board
it's on ir its harness. Check them all. Make sure the volume buttons
plastic actuator moves freely and is not stuck.
If these parts are all good, you have a problem on the main board. You
may have to trace the control lines as far as you can and check any
capacitors along the way. If you have an oscilliscope you can test the
lines to see if the up volume is working correctly. If there is noise
on it, you might find a bad capacitor if you can trace it back far
enough. Schematic helps here.
Of course, make sure nothing is shining on the sensor window on the TV.
You might want to scope that line as well (IR sensor line).
If none of that helps, get hold of Viewsonic and find your closest service provider. You can order a main board from them.
Of course, you could try just using the audio out jacks to an amplifier
or a surround sound amplifer. Then you would use the remotecontrol for
the surround sound system to control your volume.
Bet you were going to buy one anyway right?
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