Same problem on my JVC DR-DX5SU. Says "loading..." and will not respond. Factory solution is to quickly unplug and plug / or unplug for several hours and plug-in. I suspect that is to cold start and clear error flags. Did not work for me. I looked at the power supply board (immediately behind the DVD drive, on top of the hard disk). I noticed one capacitor was "bulging" on the top. See photo. Electrolytic caps should never be bulging - if anything, the top should be slightly concave.Cap was SAMXON 1500uF,10V,1400mA ripple - I suspect either voltage or current ripple spikes were exceeding its capability. Replaced it with a Panasonic EEUFR1C182 (Mouser.com), 1800uF, 16v, 2470 ripple current, to give it extra margin. Runs correctly now.