JVC Projection TV shuts down by itself.

UNPLUG THE TV. then remove the back & you should be able to see up to the speakers.

My (unfortunate) guess would be the Tuner received a static discharge when you were changing the antennas... this time of the year is bad for static - if you're in a "Winter" climate.

Receivers have a very sensitive FET or MMIC amplifier right inside from the antenna connection to make it better for picking up distant stations.

However, this same "sensitive" amplifier is also prone to being destroyed by even a small static discharge... especially if the tuner had its power turned ON.

Sad to say, it's likely toasted... :-(
(I hope I'm wrong... but you have already tried all other possible solutions)

might be adjusted in the tech menu but I recall this set having early on a few odd issues--wrong color, lettering backwards or upside down etc---there was a software upgrade for those---you might want call JVC

Howdy;
Yes there is a way. The easiest for you would be to remove the back top of the TV. That will give acess to opt lense and mirror. But first check the Lamp and inspect the lense that the Lamp into. It does not take a lot to cause your concern. Use super soft cloth and wipe surfaces.

Good Luck,Big Irish.

we found that it is an auto shut off system on the TV due to over heating. The lamp, if not cooled correctly shuts down. We added a mini fan in the back and it seems to work fine now.

Either the channel up or down buttons on the tv are most likely stuck.

replace the lamp

Call your cable company, the lamp has nothing to do with the inputs, Maybe one of the connections is barely connected from moving the TV to replace the lamp.

Your TVneeds to be serviced by a JVC authorized service center.

thrse television are ila? which i a projection lamp type tv. burn in is internal to optics and will rigure replacment of light engine