TV repair specialists diagnose and repair faults affecting televisions and related equipment. They commonly work on LED, LCD and OLED sets, as well as older plasma or CRT models, depending on their experience and available parts. Typical problems include a television that will not switch on, picture or sound faults, damaged sockets, overheating, software issues and difficulties connecting to aerials, satellite receivers, streaming devices or home networks. A repair service may include inspecting the set, testing its power supply and internal components, replacing faulty parts, updating software and checking the picture and sound after work is completed. Some specialists also repair or replace screens, although this can be costly or impractical for certain models. Customers may be offered workshop repairs, collection and return, or an on-site visit where the fault can be assessed safely.