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?
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.
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.
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.
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.
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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.
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.
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TV wont turn on..blue light comes on a fan hums and t hen it turns off?
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How old is this TV?
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.
my tv is a 2007,c97 not 786,but i imagine its the same problem.
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