Went to turn on JVC LT-42X579 and got a blinking blue light after a moment, but tv never turned on . we have unplugged it for 12+ hrs and got the same results.
Good thinking on your part
Wow thanks you thanks you God bless you who figured it out worked fabulously thanks again
SOURCE: Blue light
Okay, I found a fix! Called JVC, spoke to somebody there, here it is:
1)unplug the TV completely, no wall no power strips, completely
2)wait 10 sec
3)plug TV back in and Turn it on, the light will still be doing the same thing
4)wait 30 sec
5)ON THE TV, not the remote, locate the menu, volume (-) and power button.
6)while simultaneously holding down the menu and volume (-) button, pressed the power button ONCE and continue to hold the other 2 for 10 sec.
7)on the remote control, go to menu>settings>system info
*** now this I know as a FACT will work on systems that display: JVC - ver.5.32FO001, but I don't know of any other versions***
8)press the mute button on the remote twice
9)unplugg TV again and wait 10 sec.
10) plug TV in and turn on
It SHOULD be working normally now... Thanx to the guys a JVC support for this one, I know it seems like an obvious first place to look, but sometimes it isn't. I for one checked online forums first.
SOURCE: JVC LT-42E488. No picture. JVC logo comes up for a few seconds.
A firmware update might fix it. Call an authorized servicer, explain the symptom.
SOURCE: My JVC LT-42X579 42 in. LCD TV is only 13 MONTHS
I would take it in to be serviced. It may need a control board. Just to bad there is only 1 year warranty. You should get 3 to 5 years out of any LCD TV. Some are made cheaper than others. Good Luck.
Testimonial: "I purchased a 3-yr extended warranty on it so it's covered. Someone came, spent 2 min just looking then said they ordered a part (power board?)for it"
SOURCE: what would cause my jvc lt-42x579 42 in. lcd tv to
Failing power supply can be one of the causes.
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
SOURCE: I have sound but no video on my JVC Lt-42x579
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Please post back what you find.
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The lcd tv was in need of a software update. Working great again!!
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