When the background on my laptop is dark, one can notice a tiny red spot on the screen. All I need to know is as follows:
1) Technically what's a red spot?
2) How does a red spot occure?
3) Is a red spot a manufacturing defect?
4) When there is a red spot on the LCD. Do we require the LCD to be replaced immidiately?
My friend's TV was well out of warranty and a Sears (the retailer) tech agreed that the engine needed replacement. They called Hitachi Customer Relations who will send the part to the home at no charge. Sears did not charge for the service call, but will charge $242 for labor to install the parts and adjust the TV.
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Re: Red spot on LCD
We had the same problem and the infamous "red cloud" is a light engine defect and Hitachi knows about it. After calling Hitachis Customer Relations Department (not customer service) they referred us to a local Hitachi dealer that diagnosed the problem in less than a minute as a "light engine defect". We called Hitachi back and once they confirmed this with the dealer, they shipped the part to the dealer and the tech came out and installed it...looks like brand new TV. Here's the deal though, when you first call Hitachi, they will act like they've never heard of the problem until you have theTV looked at. They will pay for the part...$1500 but they will ask you to pay the install. Our install was $400...worth it to us on a $3600 TV. Be sure and call the Hitachi customer relations department and not regular customer service...you will get no where with them. The Customer Relations Department # is 800-654-7013. Good Luck!
We followed "varian's" advice and called Hitachi customer relations and scheduled a service appointment with Sears who was the retailer. The tech diagnosed the problem and waived the $105 service fee when Hitachi agreed to send the replacement parts for free. The installation charge will be $242 when the parts arrive. The TV was well out of warranty.
Our Hitachie 50" HCTD had a blue cloud and it is just over 2 years old. We were told by the company where we went to get it looked at that this is a very common problem and it would cost us $1,280 to fix on a $2,500 TV.
Quite a crock
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If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
I see this quite a lot. Sometimes it's a loose connections between the motherboard and the lcd display. Especially if the laptop is 3 or so years old. I'm assuming you did a hard reboot and got the same thing. A lot of time the backlight will give out on olfer laptops and the only thing you can do is replace the lcd display or hook it up to seperate monitor. Two things I can recommend are;
1. Plug the laptop into a crt or lcd external monitor and see if you get the same thing or if you actually get a good image.
2. Press [Function] [F4} and see if switching between exteranl and internal monitors makes a difference.
1) That red spot means that a pixel is stuck, actually it's very common on LCDs.
2 and 3) It usually occurs for a manufacturing issue.
4) The most of the time it doesn't mean that the whole screen is going to fail, but in my case I would take advantage of the warranty if the laptop is brand new and the warranty is still there.
Check with Panasonic. I have the same issue and was originally told that the optic board needed to be replaced ($1700). I waivered on getting it fixed and spending more than the tv is worth. So I now learned that there is a new fix for the bad optic board and Panasonic is repairing it free of charge. Repair is schedueled for next Friday (Feb 1, 08). I'll report back if it was successful. This repair involes an eprom on the optic board. Hope the sheds new light........
Your light engine will need to be replaced as you have a LCD panel failure. Here is the link to the part number for the model 50V500 if you have the 50V500A it has a different part number. http://www.partstore.com/ProductDetail.aspx?ProductSKU=8286849&ProductType=PART&ModelID=374014