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

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Resetting lamp hour meter

I've got that ugly "Replace Lamp" signal in red still popping up when I turn on the unit after replacing the lamp. How do I get rid of it? I've trided holding the "volume -" on the face of the unit while holding down the "OK" button on the remote for 6 seconds.....nothing!

I'd appreciate any input.

Thanks,
John in Lacombe, LA

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It is the MUTE button on the remote and the VOLUME DOWN on the TV.

Posted on Mar 10, 2010

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Mitshubishi WD-62327 TV will not turn on and no sound. TV made a interference sound and shut off. Tried to turn it in the morning still nothing. Replaced lamp/bulb still nothing. Red light is on (not...


If you have a voltage meter there are some things you can check.
Unplug the unit and remove the back cover of the set. Then Plug the unit back in.
You will need to tape down the lamp safety switch in order to do these tests.
Here are all the failures that would give you a lamp error and what to check.
Cause 1. Unit powers on and works properly for a while then shuts off with a red lamp led(lamp error). Suspect bad lamp and replace.
Cause 2. Unit does not power up correctly and you have red lamp led(lamp error). Check the lamp enable line at connector J14 on the back of the light engine. If pin 6 does not switch to 5 volts after turn on, but your 12 and 5 volt supplies are good, then suspect a defective light engine.
Cuse 3. At power on the lamp turns on and off 3 times and then the unit shuts down with a red lamp led(lamp error). You have a defective light engine.
Cause 4. Unit does not turn on correctly and you have a red lamp led(lamp error). Check for 12 volts at connector J9 pin 4 on the light engine. If voltage is missing check for an open fuse F9A09 on the power supply board. If it is open, then you need to replace the fuse and you still have a defective light engine.
Cause 5. Lamp enable line at connector J14 pin 6 on the light engine does go to 5 volts at turn on, but does not drop back to 0 volts after 5 seconds, but your 12 and 5 volts supplies are good then you have a defective light engine.
Cuase 6. Check for 5 volts at connector J9 pins 1 and 2 on the light engine. If low or missing check Capacitors C9A37 and C9A38. Values are 3300MF/10V. Replace capacitors if defective.

This is all I have and I wish you luck.

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Replace the lamp, after you replace the lamp reset the lamp hour meter good day and best regards.

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Consult Your owners Manual but this works for most Panasonics

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To reset the lamp timer, turn the TV on first. Now hold VOL DOWN on the TV and MUTE on the remote until a message appears on the screen about the lamp timer being reset. Make sure the remote is pointed toward the TV to receive the signal.

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