I have a YP-G70 US version, was running CWM with SlimKat 4.4.2 and everything was going great. I went to power it on today and it seemed like it wouldn't respond to anything. I can get it into "download" mode, and Odin sees it. I've installed the kernel (both DD_01142012.tar and YP-G70-Kernel-r14.tar) about a dozen times and it always succeeds and reboots, then sits at the Samsung loading screen. Holding the power button for 8-10 seconds powers the unit off.
I can't get into recovery mode at all, just download mode. Another thing to note, when I plug it into usb power, it turns on to show the battery, as soon as the battery appears the bottom three buttons light up and it reboots. The power button will work to turn the device off, but not on. For instance, if I'm in download mode, or the battery screen is appearing, holding the power button will turn it off.
Any ideas what's going on or what I can try?