A vertical white strip appears after few minutes.

IF it happens right away, it could be serious. If it happens when it is on for a while, you might need to clean out the dust buildup so the bulb can breathe.

the mother board is broken,
any questions, feel free to ask me
have a nice day!
Jerry Lampdeng Limited

If you look at the projector with the lens pointing towards you, the cable colors is, starting from the right, orange-red-brown-black-blue.

Sent the unit to the agents here to replace the lamp did not relish having to do it myself Thanks anyway

Hi there

There is basically two ways to reset the lamp timer :
1. ) On the Projector's physical buttons
Arrow Keys - Up , Down , Left , Right then Menu and Enter - this should be done quickly whilst the Projector is in standby mode.

2.) Switch Projector on - Hold in the Up Arrow Key on the physical buttons on the Projector untill a PIP screen appears - then just follow the on screen steps.

Hi Mike

Press the following buttons quickly - Up , Down , Left , Right , Menu & then Enter - this should reset the timer.

Hi Altus , yes that is correct.

Which country are you in ? I will try and direct you to a repairer ?

Hi Altus

This a common Mainboard failure on the LG JT91 if all the LED's flickers.

The good news is that it can be repaired. Much cheaper than replacement.

This will however have to be done by a Service Provider.

Hi there

On the left hand side where all the inputs are located you will see a very small screw , that is most probably what's keeping you from opening it.

Also remember to take off the cover to the front and do this slowly because the translation board's lint is attached to the top cover. Once open you can just unhook it and then you'll be looking for the board with the AC inlet on it.

1-check the counter reading of lamp to see if it is in the right age of lamp or not.if it is in right age the problem still in power unit or in ballast.