PASSWORD CODE FOR OPTOMA EX550

Reset instructions according to this
https://factory-reset.com/wiki/Optoma_Service_Menu
Optoma Service Menu Instructions Most of our Optoma Service Menu methods require the use of an original remote, typically you can not do it with just the buttons on the front of the set. If you no longer have your remote or have damaged it, we recommend that you purchase a Optoma Remote before trying to enter the service menu.
Method 1

1. Press simultaneously {UP} & {ENTER} buttons twice.
2. Press simultaneously {LEFT} & {ENTER} buttons twice.
3. A Service Menu will be displayed
   1. Then to access the Full Service Menu: Press the {UP}, {LEFT} & {DOWN} buttons once.
4. To exit, turn the Projector Off.

Method 2

1. Press the {UP} {UP} {LEFT} {LEFT} buttons.

Method 3

1. Press the {POWER} {LEFT} {LEFT} {MENU} buttons.

Method 4

1. Press simultaneously the {RE-SYNC} {ENTER} {SOURCE} buttons on the Projector.

Method 5

1. Press the {POWER} button.
2. It will show: "Power Off" or "Picture Mute".
3. Then press the {LEFT} button 8 times slowly.

Method 6

1. Press {MENU} {6} {1} {9} {MENU} buttons.
2. To exit the Service Menu: Press {MENU} {6} {1} {9}

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs and other devices are given.

Your problem same like me,just hold on the ENTER button 7 second and than press the SOURCE button,the projector will auto reset.

The default password is 1234

Disable password in Menu >> setup >> security
set Security << OFF >>
Here is a link to the manual as well
http://www.projector-manual.com/manuals/optoma/Optoma_EP721.pdf

Pass-code default value is "Right-Left-Down-Up" (first time).
any questions, feel free to ask me
have a nice day!
Jerry Lampdeng Limited

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Have a good day! any question ,contact me,Please
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Jerry Lampdeng Limited
Mobile: 0086-13178867858
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Manufacturers normally have a backdoor, a four digit password to gain access into their operating software when the user changes the password settings.

Optoma people told me their default PASSWORD is usually 2468 or 8642. One of the two will work to unlock access to full menu options.

Remember to rate my answer as you can now enjoy your projectors 100+ inches :)

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Email me if you need hack to unlock optoma dv10
[email protected]