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JVC LT-40X776 40 in. LCD HDTV Questions & Answers
Hi
Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go.
http://electronicshelponline.blogspot.com/ Before replacing it, try a reset to this set, and then check.
There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here.
JVC LT-32E478 32 in. LCD TV
Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Viewing it in "
Mosaic" or "
Magazine" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
My set currently has black lines and red dots when in use any one any idea of problem thanks
Check this site for more
details. It has more than 1400 posts to
different brands of electronic entertainment and other equipments. All posts referrers with the repair and
fault finding to electronic entertainment equipments. It will be best to view it either in Flipcard or Timeslide
option, can be selected by the sidebar tag at the top left of the display
screen. Timeslide view will be the best to select. If you are using Google Chrome as browser, Flipcard
option will be the best.
Where is the hdmi port
Hello
There is a socket at the rear panel of your TV to which an HDMI to DVI cable connection. It will look like a large telephone wall socket. OK.
JVC LT-40X776 will not turn on, electrical outlet
Probably an issue with the power supply. The TV circuitry is set to protect the components when something is broken. Sometimes, it can be the fuse on the power supply board, and sometimes the capacitors burn up. If the TV is under warranty, take it in for service. If it is not, you may try to fix it yourself by first checking the fuse and then checking the capacitors. If you aren't familiar with electronics, I suggest you let someone who is a professional look at it. Good luck!
Tv have white screen no picture
Tuner board is dead.That the board,where the brocasting signal cable plug into this board.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.
No picture or sound!!
Call the tv warrenty serviced repair,tv under a one old right?The tv power supply board is dead,need repairing by replacing power supply parts call like capacitors common parts dies by leaking gases in the power supply board.
Lightening storm, brief power outage. When power returned, my JVC
You have been affected by the lightning.
It is possible that your television may come back...
Un-plug the television and let is sit for an hour or more. Plug the television back in and allow it to re-boot. If it does not come back then, turn it on and off a few times to see if it gets any better.
Unfortunately, your TV may need repair or replacement. To avoid this in the future, use a good quality surge protector like Panamax .
Tv wont stay on
Hello,
The power light may be flashing or if you are runing with a series light bulb it may be cycling on and off continuously. There may be a chirping or clicking sound from inside the set. (Note: using too small a series light bulb load during testing for the size of the TV may also result in this condition.)
If there is a low voltage regulator or separate switching supply, it could be cycling on and off if the horizontal output, flyback, or one of its secondary loads were defective.
Does this TV have a separate low voltage regulator and/or switching power supply or is it all part of the flyback circuit? For the following, I assume it is all in one (most common).
Some simple things to try first:
Verify that the main filter capacitor is doing its job. Excessive ripple on the rectified line voltage bus can cause various forms of shutdown behavior. An easy test is to jumper across the capacitor with one of at least equal voltage rating and similar capacitance (make connections with power off!).
Use a Variac, if possible, to bring up the input voltage slowly and see if the TV works at any point without shutting down. If it does, this could be an indication of X-ray protection circuit kicking in, though this will usually latch and keep the set shut off if excessive HV were detected.
NOTES - This require you to open the television and having a multimeter to work with.
No antenna level
Do you mean no signal strength? Do you have an internal or external aerial antenna? Is the signal split between multiple TVs? You can look at antennaweb.org and tvfool.com for the recommended antenna type and direction and available channels in your area. Antennaweb is very conservative in its advice (and won't list some channels). You should also check that you have no damage to your wiring. Part of my house was wired with twist-on connectors. These have come loose from the wire at the amplifier/splitter that lets us share the signal for two TVs. The crimp-on connectors have been damaged by our pets running through in other locations. Lightning damaged one amplifier/splitter a few months ago.
Indoor antennas are even harder to get a good digital signal.
If you have a satellite dish, that often means the dish isn't aligned correctly.
I hope this helps.
Cindy Wells
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