Question about JVC Televison & Video

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I have just changed the bulb of my JVC HD Z56RX5A. But the picture is dark. Everything else I fine. Any ideas what the problem is, please!

Posted by Sofia Petrova on

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1 Answer

The Knight

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  • JVC Master
  • 76,582 Answers

After a lamp replacement, you should perform a lamp time reset. Did you done that? If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
https://elektrotricks.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Search the site by type in the brand name and model of your set, in its search bar at the right side column, and press enter.

Posted on Mar 06, 2021

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5 Related Answers

Anonymous

  • 520 Answers

SOURCE: Dark Blotch on rear projection TV screen

usually these are caused by cleaning the screen with a damp cloth or fkuid rear projection tv's usually have two plastic screens separated by about quarter inch with bulbs between,one being a magnified screen.problem is,condensation can occur causing various blotches,letting the screens naturly dry out usually solves this but failing this you have to strip down and wipe them with clean dry cloth.be careful though the inside screen is very delicate.

Posted on Feb 21, 2008

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Anonymous

  • 1 Answer

SOURCE: JVC HD-52G786 shuts off

Do you have your TV plugged directly into the wall? You cannot plug into a power strip, it needs its own direct power source. Also, I have heard that there can be electrical problems inside. I have this same model, I love it, picture and sound. I just replaced the bulb for the first time last night. It was a little premature to replace it now but I know what caused it. I bought a new bulb and it works like a gem. If you ever need to change the bulb do it yourself. It takes maybe 2 minutes. The bulb looks like the Flux Copassitor and all you do is remove the door in the back on the side. Unscrew the the 2 screws that hold the bulb in and just pull out. When you put the new one in make sure you do NOT touch the glass on the new lamp. Just slid it in and screw the 2 screws back in and make sure the door is closed and tight. My uncle had a service guy do his and he got raked for 5-$600, The bulb costs about $200. Should last about 5-6 years at a rate of 5-6 hours of TV on time. Hope this helped. If not, sorry, but at least you know how to change the bulb. Good Luck!!!

Posted on Apr 08, 2008

Repo Man

  • 20 Answers

SOURCE: Everything functions fine but the picture is very dark

I think you answered your own question. You have a rear projection television. It sounds like the lamp is not functioning correctly.
All projection lamps have a recommended life measured in hours. I checked the web and this model appears to be about 3 or 4 years old. from 2005 or so.
The lamp in my Samsung is rated at 3000 to 5000 hours, I had 12,800 when the service Tech was in changing another part.
3 or 4 years running one lamp is a good run. This is why DLP has lost favor for table top sets, Most are LCD or Plasma now.
Check you TV for it's lamp model and them shop around allot. Lamps are not cheap however some suppliers offer much better pricing that others. Care should be taken to make sure you order and purchase real replacement lamp and not a clone / compatible model. Original parts should produce the picture you are expecting

Posted on Jul 08, 2009

Jim Krause

  • 1779 Answers

SOURCE: JVC HD-61Z456 Television to dark

Most likely a bad Polarizer within the light engine of which you cannot buy. The entire light engine would have to be re-built or replaced and they usually start around $600.00....

Posted on Jul 09, 2009

Anonymous

  • 1 Answer

SOURCE: Lamp and Power lights blinking fast and no picture...

hi mach500..We just had the same problem. Did you find out if it could be the fan?
Thanks

Posted on Aug 28, 2009

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You can change the complete assembly or for less cost just change the bulb. Do not use Osram or other funny brand "rebuilt" or locally made bulb. Use a Philips replacement and all should be good.

Changing the bulb involves removing the lamp assembly and taking it apart like a puzzle and replacing the bulb. JVC are a little more difficult to do than most others because the wires on the original bulb are molded into the glass on the original bulb. Wires must be cut and stripped of insulation before connecting to the new bulb.

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The life estimate for a bulb is about 5000 hours, and if the bulb is dieing before that is very obvious you have another issue on the TV

That Could be a temperature problem, like a cooling system is failing (usually the is two fan around that) or a lot of dust in the cooling system. another one could be temp sensor also maybe failing and is not sensing high temperatures and is no turning off the TV

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