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My Panasonic PT-LB50U LCD projector flashes red lamp indicator and will not light up. I replaced the lamp and it still will not light. The old lamp only had 20 or so hours on it and it does the same thing. I tried removing the new bulb and reseating it but no change. Thank you for any help. Paul

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  • Anonymous Mar 18, 2009

    My Panasonic PT-LB50U LCD projector flashes red lamp indicator and will not light up. I replaced the lamp and it still will not light. The old lamp only had 20 or so hours on it and it does the same thing. I tried removing the new bulb and reseating it but no change. Thank you for any help

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This worked for me what i did is: turn on projector then undo the light panel when its on the projector then will cut off, now the light panel pushes down on the hidden safety switch take a screw driver and push down on the switch, the projector will turn on then wait for about 8 sec then release the projector will turn off, repeat step several times until the light flickers, then do a couple more times and the light should come on and should stay steady turn off and let cool for 10 min, this worked for me hope it works for you!

Posted on Aug 12, 2009

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How to do lamp reset on panasonic pt-lb50u projector.


To reset the lamp hours, turn on the projector. Then press Menu and use the Up/Down arrows to highlight Options. Press Enter then highlight Lamp Runtime. Press and hold Enter for 3+ seconds until the Lamp Runtime screen is displays. Press the Power button (any other button cancels the reset). When the Power button LED turns red, unplug the power cord to the projector. You can either use the remote or the controls on the projector. Reconnect the power cord after a few minutes.

The reset instructions are on page 62 of the user manual. The manual is available from Panasonic here: https://support.panasonic.co.nz/docstore/PT-LB50U%20Operating%20Instructions.pdf .

I hope this helps.

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How do I get rid of a password on the projector so I can use the projector (PT-LB50U)


Menu
security
enter
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Feb 06, 2014 | Panasonic PT-LB50U Multimedia Projector

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I have a problem with our projector. The model is: PT-D3500E and the serial number is: SH5530059. When you switch on the projector the power light goes green after 25 seconds the power light goes...


If the LAMP INDICATOR flashing red then.
Problem: Lamp circuit failure
Sulution: your two lamps are ok you need to repair the lamp drive circuit this is repairable and if you don't want to repair you buy a new one lamp circuit and install it.

Jan 19, 2011 | Panasonic PT-D3500U Multimedia Projector

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After changing the bulb image will not come on and solid orange light appears


Other then POWER BUTTON light there are three lights more
1. lamp indicator
2. temperature indicator
3. computer input
witch one light is flashing RED or illuminated RED with POWER BUTTON orange light.
If LAMP INDICATOR light is illuminated RED than lamp runtime has reached 1800 hours. but projector still working.
If LAMP INDICATOR light flashing RED than lamp circuit failure, or abnormal function or lamp unit is damaged. In this case projector doing the same behave just like your projector.
if TEMPERATURE indicator illuminating RED the projector still projecting and if flashing RED than turned of itself

Jan 11, 2011 | Panasonic PT-LB50U Multimedia Projector

1 Answer

The projector turned itself off after couple hours of use and the Temp. red light came on. Power Light turned red instead of orange as usual. After 3hrs I turned it back on, cleaned the dust off the fan...


There are three temp sensor inside the projector and now your projector need full service but if the air filter becomes clogged with dust, the internal temperature of the projector will rise, the TEMP indicator will illuminate and the projector's power will turn off (the TEMP indicator will flash after the power is turned off) The air filter should be cleaned every 100 hours of use.
If you clean the filter with a vacuum cleaner to clean off any accumulated dust. then your projector working normally

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1 Answer

After a few seconds the lamp light began to blink red, its a panasonic pt-lb10svu, show no pic at all has a new lamp


Hi, Replacing the lamp in a Sharp LCD projector requires the lamp indicator to be reset. When the lamp needs to be replaced, the indicator becomes red. Resetting the counter for the lamp hours to zero will also reset the indicator to green.
  • Attach the power cord to the projector and plug it into an electrical outlet.
  • Step 2Locate the buttons on the top of the projector and simultaneously hold down the "Enter", "Menu" and "down arrow" buttons, then press the "Standby/On" button.
  • Step 3Continue holding all four buttons depressed until the lamp indicator light begins flashing green.The counter is now reset. Zero hours will now be displayed on the screen.
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    The projector lamp does not turn on


    I have done this on several of our PT-LB50U's with sucess every time.Remove lamp cover and lamp.Then remove top of case by removing 6 screws on bottom.Remove metal shroud that would cover lamp 2 screws and remove 2 screws that hold lamp plug and move it away.You will see a little blue lever for saftey switch move it back and forth from top and bottom put back together and should turn on.

    Jan 03, 2009 | Panasonic PT-LB50U Multimedia Projector

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    Projector won't turn on after I replaced the lamp


    re insert the lamp and check your connection. if that does not work then replace lamp or have lamp checked.

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