JVC LT42P789 42 in. LCD TV Logo

Question about JVC LT42P789 42 in. LCD TV

2 Answers

I turn on the T.V. and the blue light is blinking and the T.V. doesn't turn on

Posted by lsandoval on

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2 Answers


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1. simultaneoulsy press and hold [menu] and [vol-] on TV side panel
2. press and release [power] on TV side panel
3. count to 5 and release[menu] and [vol-]
4. TV should have turned on
5. if not, unplug TV and press[power]
6. repeat from step 1 if the TV does not power on the 2nd time

Posted on Jul 10, 2009

  • 8 more comments 
  • imafixitguy Oct 23, 2010

    I took a chance buying this tv for $100.00 at a thrift store and funny enough the sticker said bad bulb on it. I thought I would have to solder or repair a part but I was shocked and his advice worked perfectly. Thanks for your tip!!! You have earned your Guru status!!! Thank you !!! Thank you !!! Thank you !!! Thank you !!!

  • nmd301 Dec 21, 2010

    We tried this and it worked! Thank you so much!!

  • ttsquare7 Mar 09, 2011

    Thank you so much. This blinking light reall upset my morning. This tv is in the family room and I was thinking that I would have to get rid of it. You saved me big time.

  • scooby_ch360 Mar 13, 2011

    Thank you so much! This is such a relief! Its been a bad day and to top it off, the tv wouldnt work. This totally made my day start looking up! It worked on the FIRST try!!!!!!!! Thanks a million!

  • judith_cass Sep 17, 2011

    It worked! You're a genius! Thanks for saving us a lot of research!

  • Anonymous Dec 24, 2011

    Thank you so much your a life saver tried this the first time and my JVC LT- 42X579 started working!!!

  • Anonymous Dec 24, 2011

    Thank you so much your a life saver this happened to my JVC LT 42X579 and the first time i tried this it worked !!!

  • Kandyy_redd Feb 14, 2012

    Yess!!It Worked You All Aree A Life Saver

  • Kandyy_redd Feb 14, 2012

    Yess It Worked You Guys Took Alot Off My Shoulders Thought I Was Going To Have Buy Another One

  • Anonymous Aug 27, 2012

    I picked up this tv on the side of the road for free and we had this problem so i did this and it works! Thanks so Much!



William McNeel

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Restore the TV's normal function by changing the operating mode. Please follow the procedure below.

1. Unplug the TV or remove AC power from the TV
2. Count to ten, then plug in the TV
3. Locate the [Menu], [Vol-] and [Power] button on the TV's side panel
4. Using the buttons on the TV's Side Panel, press and hold both the [Menu] and [Vol-] buttons.
5. While holding those buttons, press and release the [Power] button one time and count to 3 before releasing the [Menu] and [Vol-] buttons.
6. The TV's lower left Blue Power LED will come ON.
7. Wait 30 seconds. Confirm that the blue LED on the Lower Left of the TV (not the iPod dock for iPod models) has remained ON during this time.
a. The TV may have turned ON. If so,continue at step 12 b. If the Blue LED on the TV's Lower Left corner remained ON, continue to step 8.
8. After confirming that the Blue LED is ON, unplug the TV or remove the AC power from the TV.
a. If the Blue LED on the TV's Lower Left corner is flashing, restart the procedure from step 3
9. Count to 10, then plug in the TV
10. The TV power should automatically come ON but no picture will appear. Only the blue power LED will be ON
11. Wait 40 seconds and the TV picture should appear
12. When the TV picture appears, you may begin normal use of the TV. (procedure is complete)

Posted on Oct 08, 2012


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