Panasonic projector PT-L78 lamp reset

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.

Cindy Wells

How long ago did you replace the lamp?
If the lamp has not actually been replaced and you are attempting to bypass this safety feature then I have bad news for you. Once the projector determines current flow through the lamp has exceeded the threshold amount, it will put the projector into the mode it is in now - Critical Lamp Replacement. You can set the projector bulb to low power output and see if that allows you to reset the bulb life timer but, again, if you have not actually replaced the bulb assembly, you are in danger of the bulb bursting under pressure. This can actually damage the projector.

You can find the manual for your projector at

ftp://ftp.panasonic.com/projector/ptl785u/pt-l785u_oi.pdf

Go to menu > option > lamp hours. Then press enter on the Lamp Hours for 5 seconds. A new option will pop out asking to reset lamp

hi,
Do the following for reset the lamp hour timer of Panasonic PT-LM1U
1. Power ON the projector. (wait for the display)
2.Press the menu button to display main menu and then press the up arrow or down arrow to select OPTION2.
3. Press the Enter button t display the OPTION 2 menu.And press the up/down arrow to select LAMP RUNTIME.
4. Press and hold Enter button for approximately 3 minutes.
5. The LAMP RUNTIME will change to TIME RESET. (power off).
6. Turn off the power.
OK

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.

1.Press the MENU button to display the menu screen, and
then press the F or G button to select the OPTION menu.
2. Press the ENTER button, and then press the F or G button
to select LAMP RUNTIME.
3. Press and hold the ENTER button for approximately
3 seconds. The confirmation screen, “LAMP RUNTIME
RESET.” is displayed and select OK.
4. Turn off the power.
�� This will reset the cumulative usage time for the lamp
unit to zero.
***Here you go and best of luck!***

the lamp is good for about 2000 hours. after this, the lamp may still work, but not as well or for very much longer. after you replace the lamp, you have to reset the lamp timer (in the menu settings).

When you remove one of the lamps, you're notice that there's a micro-chip build into the housing itself. Unfortunately there's no way of manually resetting the lamp hours, due to the chip. You'll need to replace the whole lamp assembly.

lamp hours can only be displayed by connecting two test points in side the projector. in normal operation, a message will be displayed on the screen when the lamp hours = 1090. when the lamp reaches 1100 hours, the projector will shut itself off. when you do replace the lamp, be sure to reset the lamp time in the setup menu (this is covered in your manual).

With the power on and the lamp off, hold the input button down on the projector then press and hold the power button for 5 seconds