Question about JVC LT-40X667 40 in. LCD Television

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My JVC TV wont turn on, the blue LD at the front of the TV comes on, when i press the power button the blue LED goes off and i hear a click on the TV but it wont turn on.

The Blue led comes on when the TV is plugged in, when i press the power button the blue LED goes and and i hear a click like it wants to turn on but it wont come on, eventually the blue LED comes back on.

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Look at the power supply board, look for capacitors ( look like black or brown cans) that have their silver tops bulging. There is a cross on the top designed to open in a failure so the capacitor doesn't pop. Even if the top is still closed, the slightest bulge indicates a failure. Unsolder all bulging capacitors and replace with same spec. For instance, in a bad Samsung there are 4 1000mf 25v 105C rated caps that always go bad, same symptoms. The caps are about $3-4/pc in USA.

Posted on Dec 04, 2014

Testimonial: "THank you for your help,i will try looking for the bulging caps, i looked at the power supply and didnt see any bulded caps, could this be an indication that the Main analog board is the problem?"

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You can be pretty sure something's wrong with the power board. Defective capacitors may "look" OK but aren't. It could be helpful to lay your hands on a schematic.

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Tv will not turn on i push power on button and blue lights click on an tv acts like it will come on but then tv shuts off and no picture appears


The blue light merely indicates power is getting to the TV. When you press the power on button, the defective power supply shuts the TV down immediately

Jan 06, 2013 | JVC LT42P789 42 in. LCD TV

1 Answer

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When I turn on the TV the blue indicator light comes on but there is no display, then the blue light starts blinking.


The following steps should be able to correct the problem:
1) Unplug the TV or remove AC power from the TV
2) Count to ten and 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.
8) Press the [Mute] button on the TV remote twice
9) Unplug the TV or remove AC power
10) Count to ten and plug the TV in
11) The TV power should automatically come ON and the blue power LED with be ON
12) Wait 40 seconds and the TV picture should appear
13) You can now continue using your TV.
14) If the picture does not appear, power on the TV manually:
· If the LED begins flashing, unplug and power ON a second time.
· If the LED begins flashing again, power ON the TV without unplugging
If the LED begins flashing again, contact us directly by phone to obtain a local authorized service center for you.
If the TV does power on, please reply back with the software version number for us to research this issue. Please follow these steps to obtain the software version number:

1) Press the [Menu] button on the remote control.
2) Using the arrow keys in the center of the remote, scroll over to the "settings" menu and select the [OK] button on the remote
3) Scroll down to "system info" and select [OK] button on the remote

Dec 19, 2009 | JVC Televison & Video

1 Answer

Is there a way to shut off blue light


Hi my name is Eric,
I hope I can help you with your issue ,
Yes you can turn off the annoying blue power light, go into the menu and look for the item called blue eye effect on/off

 
Press the MENU button.
Press the ▲ or ▼ button to select “Setup”, then press
the ENTER button.
2 Press the ▲ or ▼ button to select “Blue Eye”, then press
the ENTER button.
3 Press the ▲ or ▼ button to select “Off” or “On”, then
press the ENTER button.
• Off : LED(Blue) will not come on when you turn the TV
on and off.
• On : LED(Blue) will come on when you turn the TV
on and off.
4 Press the EXIT button to exit.
 
 
If you feel good about my solution please click accept.
If you have more questions you can still respond,
I will reply asap
Thanks
Eric

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2 Answers

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


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

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