Question about Panasonic PT-50DL54 50" Rear Projection HDTV-Ready Television

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TV won't turn on

When I turn on my Panasonic PT-50DL54 TV, The power LED flashes green several times, then flashes red three times, pauses then flashes red three times. This sequences of three red flashes repeats over and over. The TV never does come on. I bought a shop manual that says there is a problem in the Fan SOS circuit. Any idea on how to narrow it down further.


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Re: TV won't turn on

Problem is fan stoppage this is probable caused by excessive
dust in fan take off back and locate visually the cooling fans in unit
use canned air to remove dust until fan moves freely. if all fans
are clean maybe one fan is not giving rotation detect signal
look at voltage on white or yellow wire from fan s/b 5v then 0v
when fan rotates if one stays at 5v replace it

Posted on Feb 15, 2008

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I have a Panasonic PT-50DL54 50" rear projection tv. My tv screen won't come on but the fans will. The power led light flashes green like normal but than starts to flash fast for about a minute than the...

Time to get a new TV. I have similar problem. In my case, the set turns off, LED blinking green for about a minute or 2, then the set will turn on by itself. Something the LED started to blink yellow after blinking green and then shuts off. I can turn it back on. This happens 3 or 4 times in an hour. After that, the TV stays on for as many hours as I want until I shut it off.
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I have a Panasonic PT-50DL54J DLP projection TV. It suffers from a shut down problem. Shortly after powering up, the TV shuts off, and the front LED flashes red 6 times. At this point, the TV will not...

I have similar problems. I removed the back panel and use compressed air to blow out all the dust from all the components. Just remember not to blow into the main fan on the right as that is the one cooling the lamp. I don't know for sure if this is the only problem.
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remove back panel. blow out all the dust from all the components except the fan on the right.
Vacuum out all the dust.
Have you replaced the lamp? that would help too.
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I got various numbers of flashes also.
They all point to some components.
I simply open the back panel and vacuum.
I also use compressed air to blow at all the components and vacuum again.
Do not blow into the fan on the right as it will get the dust inside the lamp module.

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