20 Most Recent JVC HD-56G886 56" Rear Projection HDTV Questions & Answers

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

It could be dust and or lint in the tv. The bulb has a fan to cool it and if it is plugged with lint can cause the bulb to overheat and fail. Lint or dust that gets on the bulb can also cause premature failure. Remove bulb and lean fan and intake screen thoroughly and check to make sure fan is operating. Then install new bulb. Hope this helps.

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)

Yes and in several brands it is not uncommon= the main board and others communicate and control this function= means it could be anywhere--not easy except by subbing boards to find---Shops will either do that or use a scope and expensive signal generator to trace the problem.

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

The green screen is caused by light hitting the back of the tv. Either move the tv to a location where direct sunlight will not hit it or put up strong curtains. As for fixing the problem, do a search for JVC green screen reset on AVS Forum, its easy to do just dont have the info with me now. Keep in mind if direct sunlight hits the back of the tv it will do it again. I have put up some good curtians and ensure not to open them when watching the tv. Hope this helps. I am Hayward, have a nice day.

Hi Edwin Robinson,First of all thank you for contacting Fixya.com regarding your TV problem.You didn't mentioned if the symptoms remain the same in all inputs, this is to isolate the AV board from fault. If you are using HDMI connection, I would advice you to try the other inputs like input 1-3 at the rear panel and the Audio/Video input at the side panel using the RCA cables. If there's no sound after trying other inputs, then this is an indication that the fault is in the audio circuitry inside the TV.The DIY steps that I would advice you is to check the resistance of the internal speakers using the multimeter set in resistance measurement. Good speakers will read between 6-8 ohms (for 8 ohms impedance) and you can hear a crackling sound upon testing.How to test speakersRCA Cable ConnectorIf the speakers are in good condition then the fault either the supply voltage line of the audio circuitry from the power supply board, the audio processor on the main board or the sound output circuitry. This require technical skills because series of test are going to perform to isolate where the fault came from.Immediate solution.You can still watch your favorite channel and movies to your TV while the sound is playing through your home theater system or amplifier. Just hooked up the video to your TV terminal jack and the sound/audio to your home theater system or amplifier to bypass the sound from your TV.Please let me know if you need further assistance.Have a nice day and take care!Kind Regards,Jdvillanueva

The fault can be confirmed only after a proper audio test is done. The unit must be opened first so that the speakers can be checked for continuity. If this is okay then feed a audio into the audio in and select the video for the auxiliary input. If there is output then the output is good and working and the fault can be with the SIF- sound intermediate frequency section. You will need to inject audio frequency so as confirm the failed section.

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.