Syncmaster 720n hi my syncMaster 720n is always go to auto ajustmentsand blinking all menu options always its giving lots of trouble to me always

OK, I've figured it out! There's something wrong with the control chip, so if you don't have it under warranty, here's what you can do:
1. Turn off the monitor
2. Unscrew the face of the monitor
3. Remove the bottom part of the face from the backside, so you can see the chip
(the control chip is located on the face of the monitor, under the buttons)
4. You will see a small white connector about 5mm wide, UNPLUGG it
5. Put the small cable that you've unconnected under the front, so you can close the monitor back
6. Close the monitor and plug it back in

That's it. You won't be able to change your settings (they autoadjust anyway), but you won't have to throw the monitor away!

Peace.

Works, thank you (Samsung LD220)

Micro switches are problem chagege it wil work.

No solution
Service

Check if the button for auto adjustement is broken or sitting too tight
remove carefully and check now...