My PSR500 has been having display problems about once or twice a month where the light works but the display is blank. turning if off and on brings it back. now it happens several times a day but i have to turn it off and on 3 times or unplug it and plug it back in with no batteries in it. haven't tried it with batteries in it. one time my display came on all scrambled looking but i turned it off and on and then it was fine. what could be the problem? am I screwed on getting it repair since GRE is out of business?