We don't fix TVs. No market for fixing tv's in this time and age especially in the USA. It may be feasible in other countries but not here. Worst case, replace the faulty board (Power, main, or Tconn) and done. 

Tha main issue with TV repair is the limited options available.  I have repaired many in the recent past, for reasonable costs. Many require minor power supply repairs, some require LED replacement.  The main problem is the space required in order to work on these things.  A large flat space is needed and dis-assembly takes a while.  It is easy to damage the panel is access is required for LED replacement.  The parts needed (if available) are cheap.  The time needed for access can be excessive and the risk great.  I have since limited repairs to board repair or replacement only.  I won't replace individual LEDs or LED strips anymore, the rick is too high.

As a successful repair example:  I have "fixed" many 55" and larger dead sets with capacitor replacement or PWN IC replacements where the parts cost was less than $5.  Stocking the common replacement parts and bulk purchasing minimizes both cost and time in the shop too.

Dan

@Anonymous/Guest    Sometimes if you take apart the TV you can visually discover the defect in the TV.  I took one apart and saw that a capacitor had swollen.  I replaced the capacitor and the TV worked great.  Sometimes it takes some research and time.  Another TV I repaired happened to have a T-conn board issue.  That involved some microsoldering and replacement parts on the board.  I ended up sending the T-conn board into repair shop I found on eBay ("REPAIR SERVICE FOR SAMSUNG 60" T-Con BN95-00628A BN95-00628B BN95-00628C").  They repaired it for $32 (at that time).  However, TV repairs, like Northridgefix and Dan stated above, can take time, lots of space, and may not be very business friendly.

David