What's your problem?the on button is turning off my Leica Digital DISTO D3a

first off it is not a computer at all why post this thing to computers? let it sit for 24hours,batteries removed.l .
use fresh Type AA 1.5 V. batteries and see it work
never not try new batteries on any battery device that acts oddly.
you paid $600 for this thing , OMG too much.
worth $100 + $500 name Leica
Leica L Leica Disto D510 (E7500i) 650ft/200m Laser Distance Measurer w/ Bluetooth and Disto Sketch App for iPhone/iPad - Red/Black

Contact Leica themselves, or try your local camera repair facility.

There is no error code 270 listed for a Leica Digital DISTO D3a 100M Laser Distance Meter.
Are you sure that's the code?
Or do you have a different make or model of laser distance meter?

Low battery. Mine does that when batteries are too low to operate the laser.

I had this exactl problem and resolved it by replacing the batteries

Press and hold the circle button down, after a few seconds it will flash 'beep on/off', dont stop holding it down, it will then cycle to 'units', press +/- to change between metric and imperial, then press the = button to store. If you keep holding it down you can set the reference pont (where the measurement is taken from, the back, middle or front edge of the machine) add an offset (add take away from the displayed dimension), and you can also reset the machine.

Did you ever find a fix for this? My Leica Disto A5 is doing exactly the same thing!

You can download a manual at http://distagage.com/downloads.html

but simply, to get the distance to appear, turn on the unit with the large red ON/DIST button, aim the red laser dot at your desired target, and press the ON/DIST button again. The distance will appear on the display screen.
Greg DeTray, www.distagage.com

Mike,
Leica does not sell replacement keypads, if the unit is less than 2 years old they will cover it under warranty. Contact the dealer you bought it from and they can handle the warranty exchange. If it is over two years old, it is out of warranty, but they offer a "repair" option, which will replace your damaged A3 with a new D3 for about $215. If you bought it from a reputable dealer, you shouldn't have any problem.
Hope this helps,
Greg DeTray
www.distagage.com

can not measure distance.
each time the button is pressed dist, 279 error appears.