[Mike_73]

I just thought I share this:

I passed on my 505 to my wife and upgraded to a 600 a while ago. My wife usually keeps her 505 in her purse for reading on the go (while waiting for the little one to come out of school and such).
Then we took our readers to a nearby park while it was really hot (at least for our location) with about 37Celcius.
We came back, my wife didn't use her reader until she wanted to do so yesterday. Well, the reader didn't turn on allthough my wife was sure it should have at least 3 battery bars. So I thought it needs a charge as probably my wife didn't recall exactly. After some time the charging process stopped but the reader couldn't be turned on.
After some pressing buttons and thinking what could be wrong, I tried the little reset button and the unit came back to life. It was doing a boot up. We never really shut off our devices completely.
So, it works again, right. Right.
But I can see a black bar on the right and bottom of the screen, even if the reader is off (stand by).
Looks like the frame of the screen. When turned on, the display shows all content like before, but still, there's that fine line on the right and bottom.
I suspect that probably the display is glued or held in place by some temperature sensitive means which gave in at those high temperatures. It may be even coming from having the purse in the car while it was so hot.

Anyway, it's working and I'm glad it does. Being able to see some small black bar at the bottom and side isn't an issue, but still it seems a little confusing to me.