Question about JVC DLA-X3 Procision Projector

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My JVC DLA-X3-BU will not power on, 2 lights are red, lamp light is flashing orange, how do i get it to work?

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I have a JVC DLA-X9-B projector which I think is the almost the same as the X7 and X3 the manual is the same.Its about 2 years old.It stopped working suddenly while I was watching a movie. Indicator lights were both on red and lamp light flashing orange. Replaced the lamp and it did not change the status,did cleaning filter bit , did lamp reset from the remote , did reboot and plugged it at a different ac outlet all that did not work . The lens cover is stuck at opened and the only thing you get when plugged in is the red light on and after 30 seconds the lamp light comes on orange .No fan came on no moving lens cover only flashing orange light.
From this conclusion was the power supply was working and software was a question mark either it was corrupt ,but the power cycle and lamp test start was normal and it checked the lamp and reported orange .So all the more it pointed to either the ballast or the power feeding the ballast.
I opened the projector up started with the screws at the bottom removed the the adjustable screw in legs. Removed the left and the right plastic cover ,then bottom cover, lamp cover, top cover plastic and then top metal plate cover, back cover until parts were all visible ,then put back the screw in legs a placed projector in an upright position. All this was in suspect that the ballast is the problem.
My JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-6.jpgThis is the top view photo.
On the right black plastic cover is the lamp fan and air duct.
At the center is the lens assembly and motors for focus lens shift etc.
on the left are stacks of electronics that are stacked board on board of about 4 or 5 layers.

this is the side view of the stacks of boards, to get to the ballast these have to be removed.NOTE LABLE ALL CABLES AFTER REMOVING THEM AS THERE ARE MANY OF THEM.Remove the side plate

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-18.jpg
Remove hdmi and land board,carefully there are connectors on bottom andMy JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-27.jpgds/images/jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-27.jpg" alt=My JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-38.jpgg" class="h_mi" /> jvc-dla-x3-bMy JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-51.jpgithen remove the next board ,remember to lable all the cables.
then the next board bellow ,carefull this one has 2 side connectors on pictures top side
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-66.jpgthis will be what it looks like.Note the bottom most is the power supply.,This feeds the ballast as well as other loMy JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-83.jpgRED CABELS IS THE BALLAST FEED(picture above) .The ballast is located in a black plastic box above the power supply.The only way to remove it is to continue dismantling further. jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-83.jpgthis is the top view and the yellow tags you are seeing is cable labelson the wires.

jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-102.jpgMy JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-146.jpgysical burn outs on components<br>
      mainly on power supply ballast feed and ballast itself.<br>
 <img src=all boards out
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-146.jpgthis is the power supply board it has both low and high voltage My JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-171.jpgower supply should put out about 380 volts dc during projector boot up and zero during orange blinking light,(you can skip this removal of My JVC DLA-X3-BU will not power on, 2 lights are r - jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-198.jpgo this before taking all the boards apart but remove the side plate to access the output and check the output at boot up ,warning do not short this while reading output.
power board made by sumida and so is the ballast
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-198.jpgfinally the ballast is out this is what it looks like,do you see the dark grey wires they lead to the optocouplers (little led light sensing switch looks like a square little box all 3 are side by side)
jvc-dla-x3-bu-will-not-power-2-lights-zogl1yh0b34d0jvl0ocjipaz-3-227.jpg this resistor came out of the ballast ,notice physical damage like a hole in the center of it,tested it out of the board and yes its dead replaced this.
.Did all the checking one by one of the components then found one of the optocouplers had gone dead.The one located in the center of the 3 replaced that ,put it all back and got it working again.
The ballast cost 300 usd I bought one too and kept it handy just incase.
But for the meanwhile the old one is back and working just fine.

Posted on Dec 12, 2014

  • 5 more comments 
  • Anonymous Aug 08, 2016

    Hello,
    I just want to thank you so much for taking the time to share your fix to the world!
    My projector has exactly the same problem and I'm wondering if you can let me know where to source the parts you purchased to repair it and also where you purchased the spare new board from?
    Please email me letting me know at ryancheno@hotmail.com
    Thanking you,
    Ryan

  • RJay
    RJay Aug 14, 2016

    Hey Ryan,

    Find the ballast below...
    https://www.encompassparts.com/item/1015...

    I am wondering how to test and repair the transistors / octopulers, though! Where does one know which transistor and octopuler to buy? Aaaaarg! Can someone tell me? :-)

    Thanks,
    RJ

  • Anonymous Oct 03, 2017

    Hi thanks you!
    I have a jvc x30 and I had the same problem as you. The hole in the resistor and an optocoupler that does not give the same results as the other 2 to the multimeter.
    Did you find an optocoupler identical to the original or did you put a similar one instead? I can not find a reference on the web to buy one ...

  • Majorseven
    Majorseven Oct 28, 2017

    Bless you for this article...I have the same problem with my JVC X7 and am just done with the gruesome part of dismantling it all now I hope I find an elctronician that'll be able and willing to fix that ballast for me. do you think it possible to fix it without the projector at hand..just by going over the components one by one as they are not so many?
    Also, I did not remove the power board..is it really necessary to do so?

  • Majorseven
    Majorseven Jan 02, 2018

    after much work and anticipation I have replaced the ballast! And here's what happens: When I turn on the unit for a second everything seems fine, the lamp light up the fan kicks in but then it all shuts down and I get the STANDBY\ON flashing red continuously and both LAMP and STANDBY leds blink continuously as well at their own rate. The manual doesn't say anything about this sort of warning...

  • Deepak Vaswani
    Deepak Vaswani Jan 02, 2018

    After replacement of the ballast it was working fine for a year,then the bulb went out I bought a replacement from China and it worked again.Now I come across issues of not booting up or refuse to power on ,but this is normally taken care of by unplugging it from the mains for 10 minutes and plugging it back in.If that does not help maybe just maybe your bulb could be done with .I got my replacement from Aliexpress the company is in Guangzhou and costed about 45 usd complete with housing

  • Majorseven
    Majorseven Jan 02, 2018

    It's not the bulb, i tried three different ones

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I have the same issue and it happened a minute after I unplugged it and turned it back on again. Went green like it was about to work, then did the red lights/ orange flashy light thing. Anyone got any better ideas?

Posted on Aug 18, 2014

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SOURCE: JVC DLA -x3 won't turn off

unplug it

Posted on Oct 07, 2012

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