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Michael, Technician
Category: TV
Satisfied Customers: 727
Experience:  6 Years component level TV repair. Ex-Military RADAR and radio repair.
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I have a phillips tv 42 inch flat screen, sometimes the bottom

Resolved Question:

I have a phillips tv 42 inch flat screen, sometimes the bottom half goes black, any ideas?
Submitted: 8 years ago.
Category: TV
Expert:  Michael replied 8 years ago.

Thanks for choosing JustAnswer for your TV question!



missing parts of the picture, especially half the screen or in blocks as you describe , Is usualy a flaky buffer. The buffers seperate the picture into "zones" each of which is controlled by a buffer (or drive board). It can only be diagnosed in person by a technician, anything else is basically guesswork.


From the sound of your problem you should probably call for service. There are too many variables involved to diagnose a problem such as yours over the internet. Modern TV's have thousands of parts, it can take a seasoned veteran up to an entire day to track down troublesome problems IN PERSON.



Please understand that by opening a TV you are exposing youself to many dangers, including electrocution. Be sure that the set is un-plugged and keep one hand behind your back whenever possible to avoid a shock through the heart as this CAN KILL YOU. If you have zero electronic experience I would not attemp this repair. OK, public service announcement over.


Basic electrical knowledge is a must to get inside your TV and fix it.


Your TV will need some parts and it is best to either leave it to a technician to diagnose.


If you call for service prepare to part with $200-$450 depending on the damage in the TV.



You can call Your manufacturers customer support at the phone number in your manual to find a local repair center. They do this for free so you can get your set repaired.

Wish I could be of some more help to you.


Hope that helps!



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