Question about Sony KP-51HW40 51" Rear Projection Television

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Pink and purple picture

I changed my bulb on the t.v. due to the picture going darker and darker. It worked perfectly for two days. When I turned it on today I have an immediate picture that is bright but it has pink/purple over tones. I've adjusted the setting and even turned it back to original settings. It is a 50" Sony KDF-B50A10 . Any info will help as I'm not sure if I want to sink more money into it.

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  • Chuck May 11, 2010

    sounds like the optical block. is the sony on screen dislpay affected by this as well.get back with me.


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  • 24 Answers

Definitely bad optical block or "light engine".Common with Sony and EXPENSIVE.Some moodels were given an extended engine warranty because of problems ,but NOT this model.

Posted on Jan 11, 2009

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Picture has slowly gotten darker

It's time to change the projection bulb. You need to go to and search for tv bulb with model number of your TV. Now the tricky part is to try to get the bulb with the longest warranty. Don't get one with a 30 day cause the bulb may go bad by then. Get one with at least 120 days. As well read the reviews and make sure the other customers are happy.

Changing the bulb is easy and only requires a Philips screwdriver. There are YouTube videos to show you how. But these bulbs are very special and blow easily, so get one with a long warranty. And don't get a spare, cause by the time you need it, the warranty period will be up.

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