Question about Hitachi 50V500 50 in. HD-Ready LCD Television

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Very large red spot when I have no picture on the screen

I see a very large red spot on my screen now. I just replaced the lamp and it seem OK. Now I get a large red spot with no indicator lights. Is there a pending problem?

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Yes, you probably have a bad crt, or color wheel that also would need to be replaced. You can try resetting the lamp hours, Actually, I BET YOU HAVE A BAD BALLAST

Posted on Jan 28, 2009

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Posted on Jan 02, 2017

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I just recently changed my lamp in my hitachi 50 VF 820 and the screen has a large blue spot on it. I have done it before once or twice and all went well. Did I possibly put the bulb in incorrectly or is...


No. If the set turns on and you have a picture, the lamp is installed properly. Most of the time the optical block is the issue. The lamp shines directly into it. If the picture was good before the lamp was replaced, it is possible that that replacing the lamp might have dislodged some micro dust build up internal to the optical block and it landed in a concentrated area causing the red and green lcd panels not to pass light through as bright as the blue giving you a blue spot. Unfortunately the optical blocks are not designed to be taken apart to clean. Replacing the optical blocks are expensive. Most costing in the area of $700.00 to $1200.00 for the part. It also is a major tear down to get to the optical block to replace it. Once upon a time Hitachi had a couple of recalls on their optical blocks for various models. I do not know however if this qualified.
I hope this helps,
Skyassoc

Jan 06, 2011 | Hitachi 50VF820 Projection TV

1 Answer

InFocus X1A - while watching, the picture went out and then the unit had a flashing red light where before its always been constant green indicating the unit was on. I dont have a manual. Any ideas?


check the lamp. if it has bulges, black spot, fogging, or flaking, or dust is clogging the side vent screen, replace the lamp. if the lamop is ok, check the colorwheel. if you hear a high-pitched whir, the wheel is ok. if you hear grinding or chirping or nothing at all, replace the colorwheel. if both are ok, replace the power supply. you can get parts from an infocus service center or send it to one for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com

Jan 23, 2010 | InFocus X1A Multimedia Projector

3 Answers

My panasonic has a softball size red spot on it, and the lamp light indicator is blinking. how can I fix this myself


It is software, ans is replaced for free even if it is out of warrantee.
Don't rush to replace the lamp, it is probably OK.
Got the same problem with same TV (PT-61-LCX65) that was bought 4 years go in 2006 - first red spot appeared, then few weeks ago got green one nearby. Fixed it for free.
I called Panasonic using the phone number in the manual (1-888-843-9788), selected Service, told that I got the problem which is most probably "a manufacturer's defect" that should be fixed for free - they redirected me to next step, then to next one and in about 20 minutes they arranged me a home-visit by support person (the guy had to drive 2 hours to get here!). Every thing went _very_ smoothly, I am very satisfied with Panasonic's support, it was just one call with few redirections.
The service guy came in two days, unscrewed back panel, connected some kind of box to one of the boards (eeprom programmer?), turned TV onto some channel and let the box do its job for about 5 minutes - then all of a sudden spots disappeared and picture is OK now. The service guy told me that the overall picture quality should have also improved all across the screen, I guess TV sends some kind of feedback to that box for optimization.
It was free service, the service guy mentioned something about law action and that Panasonic is required to fix that for free.

Jan 09, 2010 | Panasonic PT-61LCX65 61" Rear Projection...

1 Answer

Hitatchi 52" rear projection TV has blue spot in middle of screen


Hello :
I suggest u retrace you the steps u took to replace your lamp make sure no foriegn objects got on the prism where the light shines throung the optics engine, if you remove the lamp compartment througly. If you had a perfect picture prior to replacing the lamp, then retracing your steps you might find something that does not belone. One final note: Did you purchase the right lamp 120watts anything higher than this wattage could damage your optics engine. I suggest never vacuuming the compartment because particals fly around from the suction and could get on the glass of the color wheel asembly.

Sep 25, 2009 | Zenith D52WLCD 52" Rear Projection...

1 Answer

Laptop screen flickers and goes off .


You could have a faulty inverter but
You most likely have a defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Apr 13, 2009 | Sony VAIO VGN-C140G/B Notebook

1 Answer

No picture/ no sound


Guest= Yours seems to be your lamp needs replacing, the buzzing is the lamp inverter trying to start the lamp and the lamp says NO.

Mar 15, 2009 | Hitachi 50VS69 50" Projection HDTV

1 Answer

Display has gone bad with fine vertical pink lines


Connect an external monitor to your laptop, if you get a clear image on this monitor the the video card in the laptop is OK.

The fault could be a defective inverter that supplies high voltage to the CCFL lamp or a faulty CCFL lamp. Most likely a faulty CCFL lamp.

Defective CCFL backlight may has the following symptom:
  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) as reached the end of the life and all you need to do is replacing the CCFL lamp

The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Mar 06, 2009 | Toshiba Satellite 5205-S703 Notebook

1 Answer

Help


I see a very large red spot on my screen now. I just replaced the lamp and it seem OK. Now I get a large red spot with no indicator lights. Is there a pending problem?

Sep 08, 2008 | Hitachi 50V500 50 in. HD-Ready LCD...

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