If connected via component jacks from a box unplug the box and set and wait---then plug both back and let them reboot--likely in this situation it is coming from the box
Hi :There are two possible reasons why this is happening, one is the T-Con board has failed. And the other is the main board digital circuits is faulty. when changing resolutions the scaleing IC is probably bad, I suggest you go with the cheaper of the two parts and start with the T-Con board first, if this does'nt repair the problem then it you main board that is faulty.
Now,the tv turn on screen panel have flashes pictures a few sec. than died and have sound left only?Yes.This problems ur tv is having,most likely the tv long LCD inverter board is dead.This long LCD inverter board job is to help the LCD screen panel to have a backlight to produced a picture.Can u do some basic machanical skills,like take things aparts and putting it back again?Yes,Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Long LCD inverter board for the replacement.
I probably had the same problem. The cause is a bad
main board ($276+-), digital board ($225+-) or analog ($102+-) board.
Labor should be about $130. The actual lcd should be fine.
JVC will only issue a recall if 1500+ complaints on a model.
Capacitors don't show resistance unless you use an ESR meter. If you could give me more voltages coming out of the power supply then I can help. If you want to change a board then try "Encompassparts.com"
LCD sets sometimes will not power up until the backlight boards power up. the backlight boards have SMT fuses that open. and driver FETs (commonly also SMT) that short.
check the backlight circuits first.
it needs service, that means using tools and meters and spare parts to find cause.
dead screen black screened at all times.?
even in HD TV antenna mode for HD TV?
or just the remote CLICKER batteries dead.
tell things that work and no not work , even LED actions.
the maker has no books on this old TV
https://jvcproducts.com/us/contact/support.html
here they are ask them>?
what rare TV. good luck fixing any RARE TV.
moved you to TELEVISION.
Return it to your place of purchase and get something else anything else you wouldn't believe how many people are having Issues with the LT series get rid of it.
Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge)
As a first step , if it is controlled via the remote, check that the remote batteries are good and that it is functioning ok. Does the tv show anything att all? If it does come on but shows nothing then it might be that the source selection is on the wrong kind of source, you can find on the remote whether this is so by going to the source menu which should probably be on digital. (I am assuming that you only have digital broadcasts where you are.
If there is no picture whatsoever ubplug the set and check whether the internal fuse(s) are ok.)
