Question about Sony KDF-E55A20 55 in. LCD Television

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I am replacing the bulb on my Sony lcd tv. I am waiting for the new bulb (with housing) to arrive and decided to practice. I pulled the old bulb housing out and slid the new one in. Seemed very simple but the power light is blinking red which indicates the new buld is not installed correctly. It seems so simple that I don't understand how I could not have it in correctly. I slid it directly in and the 2 connectors on the left side seem to be aligned. I believe I have pressed it in hard enough and don't want to force it. Any suggestions?

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If you lost video and assumed the fluorescent tube was at fault, you may not have guessed correctly.
There is a power supply (normally called an inverter) which may be separate or combined with the main supply that produces the high voltage the back-light requires. The tubes, if bad, will have a well-defined dark area at one or both ends of the tube. If the inverter has failed, there will simply be no voltage to ignite the gaseous tube.
The effect is the same but the solution is different.

Posted on Jul 16, 2010

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