Jeff,

I too have not touched an EV3, but there were similar problems with some of the earlier NXTs.† We had this malfunction and a google search pulled some youtube videos on how to fix it.† It turned out the daughter board that the buttons made contact with was also attached to the screen.† From frequent pressure on the buttons a solder joint that connected 3 diodes to the screen would crack.† Touching a soldering iron to each joint fixed the problem.† Your problem may be different, but check the web.† Many teams had this problem and if they got the unit from LEGO Education they would get a new brick sent to them.† Your unit may still be under warranty.

†Rich Tate
6 season coach.

On 10/30/2013 10:17 PM, Jeff Beima wrote:
[log in to unmask]" type="cite">

I love your question!† You're right, I really don't know.† I've reset before so I'm pretty sure I got it.† When it finishes the series of beeps, it is done with the first step and when it gives the startup tune, it is done with the second step.

Everything but the screen seems to be functioning normally.† It can still run programs from the buttons (need a good memory for this too!).† It can still download run programs via USB.† Unfortunately, my memory's not good enough to get through the Bluetooth menus to enable connection to the laptop.

I'm afraid to reload firmware.† I believe it will delete all downloaded programs and the known Bluetooth connections.† Sounds painful!

I didn't think EV3 robots were available because they were back ordered until mid-November.† But worth a try.

Thanks for the response!

Jeff

On Oct 30, 2013 9:59 PM, "Phil Smith III" <[log in to unmask]> wrote:

Disclaimer: Iíve never touched an EV3. So these are general hardware troubleshooting suggestions.

Dumb question, but: if the screen is already blank, how do you know that you pressed back-center-left long enough?

Does the EV3 do anything? I.e., are there programs on it that can be run? Or perhaps youíve convinced yourself that youíve reset it because it no longer does so? Did it function *at all* once it started misbehaving?

Can you reload firmware? Again, Iíve never touched on, so I donít know what that entails.

Just brain (mind?) stormingÖ

Amazon is still open: assuming theyíre available, you might order one overnighted. Worst case, youíre out $3.99 for overnight + return shipping, but with the tournament fast approaching, it would be a cheap investment as insuranceÖ (or maybe you can buy one locally, I donít know; I wouldnít wait to find out, though, myself).

--

Phil Smith III

Coach, The Capital Girls (retired)

Team 1900 (2002)

Team 2497 (2003)

Team 2355 (2004)

Team 1945 (2005)

From: First Lego League in Virginia and DC [mailto:[log in to unmask]] On Behalf Of Jeff Beima
Sent: Wednesday, October 30, 2013 8:44 PM
To: [log in to unmask]
Subject: [VADCFLL-L] EV3 screen not functioning

The screen on my team's EV3 is not functioning at all - completely blank.† Tried power cycling, removing battery, and resetting (per User Guide: press back-center-left until screen goes blank, release back until "Starting", release center-left).† Mindstorms customer service is closed but my kids are still awake!†

Anybody have any ideas?

Jeff Beima
Coach, Terra-Techno Tigers, FLL #9403


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