20 Most Recent JVC LT-42X688 42 in. LCD HDTV - Page 2 Questions & Answers

Power supply board is dead.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.The power supply board,that the board where the power a/c cord plug into it.

That HD mode.That good what else do u want.Unplug,replug the tv an hour later,might get HDMI ports work again.Not,ur Tuner board is dead.

Ur LCD inverter board is dead.Replaced this inverter board,u will get the picture back.Tries Websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long shape board.

Hi


Thanks for using FixYa. From what you have described it seems that you might have a backlight issue with this TV set. It could also be due to the inverter circuits for the backlights. The inverter is the power supply source for the backlights. There could also be a screen driver problem; if it is then you have to change the entire board. All this is only recommended if you have some kind of expertise for checking the internal circuitry of the TV as these units have high voltages running even when the set is switched off. Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

http://www.lcdtvbuyingguide.com/lcdtvreviews/jvc_32_lcd_review.shtml
http://reviews.cnet.com/flat-panel-tvs/jvc-lt-47x788/4505-6482_7-32486127.html

see the above review seems a worth buying product ....

you dont have it on the right setting then

For turned OFF enter in the set menu select the sleeper time(15-30...minutes).
For set the turn ON if you do not have the good signal it is imposibile.

I had the same problem on mine. It is a factory defect. It means your HD box that controls HDMI, USB, and RED GREEN BLUE component. Usually the red, green, blue, (720 HD) component is still functional, but the HDMI and USB are shot and can only be replaced not repaired. If your warranty is still valid and you have your receipt call JVC and they will give you the number to a certified warranty repairman. If you do not have the receipt they will not fix it. If you do not have the warranty and decide to repair it yourself or send it out, the fix is not difficult but it is costly. The box is about $1000.00 and the labor varies. The last option is to sell it for parts. If you decide to do this I will purchase the broken television from you. But if you have your warranty info there is nothing to worry about.

Press the "Display" Button. It is the 3rd button up from the bottom on the right.

Have you tried the "Aspect" button below the menu keys of the remote? Try "Full" Aspect and see if this improves things for you.

Hope this helps.

1. This TV has setting for the HDMI input that allows you to select the HDMI Audio or Analog(red/white wire) audio. Make sure this is correct

2. Most cable boxes are DVI not HDMI. If DVI then you actually do need to use those Red/white cables. If HDMI, refer back to #1.

3. The cable box has a setting to select the Audio output, HDMI (digital) or Analog(red/white cables). Just like #1, this has to be set.

4. Contact your cable company to help you set up the box correctly. JVC can probably help you check the TV

1. check the input that the PS3 is connected to
2. select that input on the TV
3. Press and hold the [power] button on the PS3
4. perform the video setup for the PS3

My guess is that you don't have the HDMI setting correct on the PS3.

The cable connections for your TV are not connected properly or are loose or the cables might have damage or the connection ports are broken.

http://www.jvc.net/cs/car/firmware/

no info generic answer read owners manual or search online for one

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)

Look for the manual of your Universal Remote and find the code assigned to your TV.. If no code, follor proper procedure for "no code available!"