I have repaired simple pin, connector loose kind of repairing for LCD TVs by opening it from backside. Placed Panel face down on flat table.
Though I haven't tried TV Panel repairing, I have done replacement of motherboard fuse, coil from IPad. It was successful but lot of headache. And prone to dig another pit while closing initial. Keep in mind it needs high skills and patience. Despite all care while opening, I ripped off WiFi Antenna which was working fine earlier and needed change during repair.