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Rick williams
Rick williams, Technician
Category: TV
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Hi, My Philips 42inch flat screen tv (3yrs old) wont switch

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My Philips 42inch flat screen tv (3yrs old) won't switch on. Instead, the blue LED light is flashing and is unaffected by disconnecting the TV from the mains. Can you give me an idea of what the problem might be? Thanks.

Hello [Sir/Ms], My name is XXXXX XXXXX Thank you for posting your question on Just Answer! I will be happy to help you with this problem,


Can I have your make and model? on the rear of the TV

Customer: replied 6 years ago.
The make is Philips and the model no. is 42PFL7662D/05

First let me say sorry I don't have a quick fix for this problem.

The problem you are describing is a very common one in LCD sets like yours. The power supply circuit has failed and will require component replacement in order to get the set working again. This repair should be done by a qualified technician, these sets can be dangerous to someone who does not know where not to touch, also it is very easy to cause more bad than good if you don't know what you are doing. Also the use of a solder Iron very well will be required. I cannot stress enough, you must be able to solder very well or can cause many problems.

If you have solder equipment and would like to complete this repair yourself please let me know and I will give you instructions on how to complete this repair. Parts can cost you anywhere from 5-20 bucks depending on where you buy them at. But remember I have seen quite a few people destroy perfectly good sets by not knowing what they are doing so just take that as a caution.

A good repair shop will run you somewhere between $100-$200 to repair this for you.

If you would like any additional information or have more questions please don't hesitate to ask!

Please never accept an answer until you are 100% satisfied and feel you can leave positive feedback. If I have answered your questions and met your needs then please press the green "accept" button. Otherwise please feel free to ask anything else to get your problem resolved. Positive feedback is always appreciated!

Customer: replied 6 years ago.
Thanks very much Rick. As this is quite a common problem, two issues arise: First, I'm wondering if repair shops have a good deal of success in fixing the problem as it is familiar to them, and, second, are these problems likely to re-occur? Thanks.
Yes,, honestly speaking todays technology is built with very little quality, mainly quantity,, the shop will upgrade bad capacitors to ones that have a higher voltage rating for example,, And your tv i will say you shouldn't have any more issues with it once repaired,, This is a good tv
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