Question about JVC HD-52G786 52" Rear Projection HDTV

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Please help!!! Problem with JVC DLP TV

Hello i have a JVC model # HD56G786 DLP TV. The problem i have is that the set will not turn on. Whe i try to boot the set up it starts as normal as the blue power light stays on and the small red lamp/program led blinks slowly,but after a few seconds the blue power light goes out and the red lamp/program light begins to blink rapidly. I have checked the lamp and it is good. I have a feeling it is in the power supply board but there is no visible damage to any of the components on the board so I am not sure which component is bad if it is the power suppy board at all. all help on possible fixes for this would be great. not sure if this a common issue but if it is it hopefully will be an easy fix. 56" jvc hd56g786 tv screen is out. my power buttons are blinking. i unplugged then plugged in. turned it on and my blue power button stayed on then the red lamp/program button starts blinking and then my blue power button starts blinking and thats all i get. no screen at all. whats the problem and what should i do?

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  • Anonymous Feb 05, 2009

    I have the same problem screen isn' t bright and both the small red led, and the big blue light blink at the same time together, and when I try to turn off the tv, both lights come back on and blink together.

  • st27 Mar 02, 2009

    I have the same problem on my HD-52G786. Blue and red buttons start blinking when I try to turn it on with no screen. Apparently the lamp is good. I replaced it 5 months ago. Pls advice what may be causing this failure.

  • ltctoday Mar 03, 2009

    I just replaced the bulb in my HD55G446. Won't turn on and the power light blinks

  • Anonymous Mar 09, 2009

    went to turn on my tv this am and it made the usual startup sound (like a fan running) and as soon as the red lamp light comes on the blue and red lights blink rapidly and it wont come on?? i have tried unplugging it and it does the same thing.

  • Anonymous Mar 13, 2009

    I have the same problem. Has anyone found a solution?

  • stargazer212 Mar 30, 2009

    I have the same problem. Had a local tv repair place take the unit and they could not duplicate the problem; started every time. Worked for 2 days, now same problem.

  • Anonymous Apr 08, 2009

    TV wont turn on..blue light comes on a fan hums and t hen it turns off?

  • sayhey1954 May 04, 2009

    I have the same problems with a HD52G786. Replaced the bulb and no power - lites on and off as described. ANYONE HELP !!!!

  • Shahid Electronics
    Shahid Electronics May 11, 2010

    How old is this TV?

  • malcolm hough
    malcolm hough May 27, 2014

    how do you know the lamp is good?mine did exactly the same thing ,i thought my lamp looked fine ,but asfter replacing it for 40 bucks from Amazon,it now works fine replace your lamp then see.

  • malcolm hough
    malcolm hough May 27, 2014

    my tv is a 2007,c97 not 786,but i imagine its the same problem.

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You need to replace the power supply board. The new ones have a bigger heat sink - obviously JVC knows about the problem because they made the new ones bigger. It cost $250 from JVC and I installed it myself - took about 3 hours to do. If you are not tech savvy call a repairman. Hope this helps.

Posted on Aug 08, 2009

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Benimur
  • 6966 Answers

SOURCE: Qustion about a JVC DLP set. Please help!

Hi and welcome to FixYa,

Sorry but there could be a number of possibilities and the best diagnosis would be to perform voltage checks of critical boards and compare with known readings. Common problems could be as simple as cold solder or loose connections, thermal fuse of the cooling fan or the light engine in some models not necessarily what you have.

This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings.Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Good luck and Thank you for using FixYa.

Posted on Dec 05, 2008

SOURCE: hello i have a JVC

I would agree with you on that the power board could be at fault. The best course of action would be to get the board/TV checked out professionally. It could be the dry joints, resistors or capacitors.

Posted on Dec 04, 2008

welcomejee
  • 10594 Answers

SOURCE: Please help!!! Problem with JVC DLP TV

Hi,
How old is your TV?
Lamps in DLP TV has specific working hours and physically lamp will look good but won't give light ( actually consume more current and protection circuit stops power supply)
Thank you.


Posted on Dec 05, 2008

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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May 21, 2010 | JVC HD-52G786 52" Rear Projection HDTV

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Had a power outage while watching tv. Then 3 blinking lights.


This is an on-going problem with DLP sets. Normally you shut the set off and the cooling fan cools the lamp down and then it shuts off. In your case, of which it's not your fault, however your lamp has taken a major hit by not properly cooling down, in turn, you need to replace your lamp at this time.
I suggest in the future if you have an electrical storm and a chance of a power outage while your watching tv, I would'nt play that model or any other model of a DLP set.

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1 Answer

Please help!!! Problem with JVC DLP TV


Hi,
How old is your TV?
Lamps in DLP TV has specific working hours and physically lamp will look good but won't give light ( actually consume more current and protection circuit stops power supply)
Thank you.


Dec 04, 2008 | JVC HD-52G786 52" Rear Projection HDTV

1 Answer

Qustion about a JVC DLP set. Please help!


Hi and welcome to FixYa,

Sorry but there could be a number of possibilities and the best diagnosis would be to perform voltage checks of critical boards and compare with known readings. Common problems could be as simple as cold solder or loose connections, thermal fuse of the cooling fan or the light engine in some models not necessarily what you have.

This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings.Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Good luck and Thank you for using FixYa.

Dec 04, 2008 | JVC HD-52G786 52" Rear Projection HDTV

1 Answer

Hello i have a JVC model # HD56G786 DLP TV. The problem i have is that the set will not turn on. Whe i try to boot the set up it starts as normal as the blue power light stays on and the small red...


I would agree with you on that the power board could be at fault. The best course of action would be to get the board/TV checked out professionally. It could be the dry joints, resistors or capacitors.

Dec 04, 2008 | Televison & Video

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MY JVC HD56G786 TV


If the Mirror broke while the TV was sitting upright, the pieces of glass got down inside the light engine and the cooling fans. I don't think you took the light engine apart to clean out all of the glass so the main cooling fan is probably not running and causing the warning. There is no sensor for the mirror. Did you remove the chassis to clean the glass? You cna remove it again and try powering it up out of the cabinet. There are four fans that need to be running. If the light engine is filled with glass the fan at the bottom of the air exhaust will not turn.
I am fairly certain that since the TV was discarded there is more wrong with it than a broken mirror.

Jan 22, 2008 | JVC HD-52G786 52" Rear Projection HDTV

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