I was playing last night and my left side player display suddenly turned into dark grey. this issue happens to me several times and i couldn't take a picture of it coz, i was totally struggling to fix it. i switched on & off for few times but it didn't work at all.. then after 2 minute time there was massage says "communication error" .. this happens to most of the time when even i turn on my players but, this issue shows only on deck 1 . so i don't think this issue was a heat problem. my (firmware version is 4.01). please i really need to know what cause for this issue & looking forward to hearing from pioneer tech support. thanks.!!