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

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

Does this projector have a small button on the back for menu? If so then you can access the menu using this. I believe it is under Option 2 and then will be ceiling on or off

lamp bulb broken or bad connection to source

The Panasonic projector PT-LB50NTU or E have two type of data inputs.
One is RGB or VGA cable and second is VIDEO cable. If your IMAC have video or vga output than you can connect.

Two type of cables witch are using with projector

Is the picture a perfect rectangle shape on the screen. If not then either adjust the angle of the screen, or use the keystone function on the menu to correct it.
Does it still not focus correctly after doing this

All you need is in the manual.If you dont have a manual ,
check their website and do a search on your model number.
Download is free.

Have you installed the lamp?

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.

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