My Sony FDR AX53 touch response on its LCD isn't working. There's no physical damage or scratches or anything, it all of a sudden stopped working. will this guide work for an AX53 Model ? As I'm being quoted £200 for a repair. i have fixed iPhones professionally for 6 months at an old job including full rehousing of later models. I'm thinking i just give it a go of repairing it myself as the new part will only be £90. please let me know what i should do