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Panasonic PT L501U Projector

Ok all the fans are running... lamp is striking and then green LED blinks and then goes orange and the lamp shuts off, then goes into cool-down and after that goes into standby LED red... then does not recover unless power off then on.

If it was a power ballast issue, the lamp would not light or would arc or blow... what else do I look for or you suggest....

I appreciate your help

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  • Anonymous Aug 13, 2008

    I have the exact same problem. Does this mean i need to change the power supply?



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Right , if the indicator light goes from Green to Orange when shutting down , it will be the Powersupply that is giving problems and not the Ballast.

Posted on Apr 18, 2008

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Before spending the money on a new Ballast.

Switch on the Projector while the top cover is off and check if all your fans are running.

The red light you see glowing on the Mainboard is quite normal.

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Hi there

Have you replaced the lamp ?

If you haven't - take out the lamp and chech for any irregularity on it - i.e. - discolouration , vein like looking marks ( black or white ) and also if the shape of the shaft is off.

If there is no visible damage it might be a faulty Ballast ( lamp's powersupply ) - especially if you cannot get it out of stanby once it has shut down.

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