Optoma ep721 remote problem

Service Manual for Optoma series projectors.

http://easp.optomausa.com/ASP/upload/Optoma%20EP721_EP727_EP723_EP728_EW1610%20Family%20V6.0%20%28DDP2230-USB,%2036.88N03G001%29%20Service%20Manual.pdf

help me to unlock my ep721 i dont have remote unit

try ebay for a spare

WELL IF YOU HAVE CONNECT IT TO A LAPTOP THEN PRESS FN AND F2.. (F2 OR SOME OTHER F KEY WITCH IT SWITCH THE SCREEN FROM LAPTOP TO PC AND OPPOSITE.. IF IT IS ON A DESKTOP COMPUTER THEN GO TO YOUR VIDEO CARD SETTINGS AND SEE IF IT IS TUNED AS AN EXTENDED DESKTOP.. IF YES THEN CHANGE IT :)

Hi,
It sounds like you have a projector which is in need of professional repair. You should eliminate source material problems first though by checking the projector with alternative input sources, ensuring that you also check the cables, and various inputs on the projector.
If the lines are present on all the inputs then the fault is internal to the projector. This will require professional repair. The first point of contact should be Optoma at www.optoma.co.uk/support.aspx (UK) or http://www.optomausa.com/ (USA). They should be able to give you an idea of ow much it may potentially cost to have your projector repaired and (most importantly) check whether it is under warranty. Most Optoma projectors ship with 3 year warranties these days.

I need to down load the driver for a ep721 fro free

dust keeps in the heat that the projector is trying to expell. blow the dust out of it with canned air.

Source input not geting signal,check with other input

Most projectors have air filters. Yours may need to be removed and cleaned. No air flow = overheat.