Sony Ericsson K770i Phone won't turn on red light apears on the top left, any suggestions?
This has happened to me twice - the first instance occurred when I'd only had the phone a few days and the second occurred today after months of trouble-free use.
On both occasions the phone wouldn't charge via the mains charger - it wouldn't switch on even when plugged in and neither the battery or the charger were warm to the touch after hours of charging, indicating that nothing was happening.
The solution for me was to connect the phone to my PC via the USB cable - nothing happened at first, the PC didn't recognise the phone and it remained lifeless. However, I left it attached to my PC and after 10-15 minutes it suddenly whirred into life.
The battery was COMPLETELY flat despite my attempts at mains charging, so I let it charge via USB for a while then transferred it to the mains charger. This time the mains charger worked.
I've no idea why, but this has worked for me twice so give it a try.