I have received a Jornada 720 a few weeks ago, and it worked fine. The screen, keyboard, touch feature, etc. was working. Even if I don't have any charger, I've used a lab power supply in order to recharge it.
Unfortunately, after a week or two, the display started glitching out. Lots of lines and colors everywhere. Nothing readable. So I said to myself that it was a cable issue, so I cracked open the PDA, and cleaned everything. Tying cables that were ought to be the issue. I've broken a few bits opening and putting back together, but it did not break the entire thing. Jornada's conception are a bit weird...
It did not fix the issue, the lines were still there, but when I left the PDA with the screen lit up, after a few minutes, the glitches went off and it worked back again.
However, I dropped the PDA yesterday on the ground, and when I tried to switch it on, it did not light up at all, I thought it was a CMS component that was unsoldered because of the fall, so I cracked it open once more, and it was just the screen cable that got disconnected. I put it back, and I also noticed that I screwed a screw on the cable that's linked to the weird white button on the center, I don't know what it's for... But it's working anyway.
Except that the glitching screen is back, and the "let it go" trick doesn't work anymore. As if the Jornada knew about this trick and prohibited itself to work again. Murphy's law, ya know...
Maybe it's a capacitor problem, but I don't know. Others say that Jornada's screens often have cable issues.
Thanks in advance for your answers.
LordEmilio
Extra keywords: screen tearing screen glitching out screen flickering HP Jornada 720 PDA PocketPC