Getting rid of red button logo from tv screen

SOURCE: red blue green lines down my lcd tv screen

HP-R4252 NOT LCD TV
IF LCD TV has vertical lines try cleaning T-con board to lcd panel cable or replaced t-con board

SOURCE: SAMSUNG LE32R73BDX/XEU TV

just spoke to Samsung support and it turns out that the freeview tuner had froze and needed resetting. To do this put TV on standby and then push in series these buttons on the remote: 'info, menu, mute, power' the TV will then turn itself on and display a menu. Press the 'down arrow' untill you've highlighted option 12 - 'reset' and then press the 'right arrow' to enter the option. TV will turn off and when you turn back on it will start in 'plug & play' mode as if new. Set the time and country options and then it will perform a complete scan. I've just retuned mine and all back to normal. Hoorah!!!! :-)

SOURCE: Panasonic Viera retune problem

Make sure that you do a new install retune not an update the channels have moved around a lot

SOURCE: hi my samsung lcd tv model le40s8, it won't switch on

if you can do soldering work, replace two 1000uF10v bulging capacitor with 1000uF 16v or 25v in powersupply board. you will save $200.

SOURCE: Samsung LTP227W

Usually the power supply is bad. Just 3 capacitors 1000uF 35volt rating. The 3 electrolytic caps will be puffed out, simply replace tham and you will be back in business.