I just got the same thing to day. I was practincing and the sceen splint in half , became jumbled and then the screen went blank. all the functions seem to still work and if I unplug it the screen appears for a few minutes and then goes blank again.
It could be a bad flash install... Try this:
Hold down the DOWN arrow on the D-Pad while powering the 500 up.
The LCD will read UPDATE FLASH.
Connect it to your computer and reflash the 500.
Also, it could be under powered. Are you using the original power supply?
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