*** If you are replying to this post, I need the MODEL NUMBER of the TV and a DESCRIPTION OF THE PROBLEM ***
I am a hobbyist offering TV repair and soldering services.
No picture but sound - LED TV's tend to have burnt out LED backlights (pic 1 & 2). This is the number one problem encountered with LED TV's. To test for this, search youtube for "TV flashlight test". On, LG TV's, the logo may flash briefly on power up or the backlights will flash repeatedly. There is a risk of cracking the screen and I will only attempt repair on LED TV's 60" or smaller. I recommend full replacement with new strips (if available) to minimize future problems. Repair cost for new strips will be approx $20 (32") to $60 (40"-55") shipped from China (2-3 weeks for delivery, deposit required) plus $50-$80 labour to install dependent on size of TV. UN58H5202 no power - has bad LEDs that damage the power supply (see pic 1). $180 for new strips and to repair the power supply. I have new strips in stock for Samsung UN40F & UN50H, LG 50LN/LA and LG 50LB/LF series.
Video of LG logo flash http://techhometravel.com/wp/wp-content/uploads/2019/09/lglogoflash.gif
LG LF or UJ series with blue/purple tint - will need full led backlight replacement. Approx $120 for 43 and 49 inch models (2-3 weeks for parts, deposit required).
Cracked or broken screen, vertical lines, screen hit, liquid damage - these are panel problems and can not be repaired. However, depending on the model and your location, I will pick it up, salvage it for parts and take it to be recycled. If you have a cracked screen LED Samsung or LG TV 55" or larger with the original remote, I may be able to offer you $20 for it depending on model.
Plasma TVs - Plasmas are obsolete, heavy and power hungry. I don't have a lot of experience with plasmas nor have had good success repairing them so I don't repair them.
TV maintenance tips
Do not spray windex directly onto your screen. The liquid can seep onto circuit boards at the bottom of the TV which will result in vertical lines showing up that can't be repaired.
If you have an LED TV, turn down the backlight level to 50 to 60% of max and check each input including apps on smart tvs. This will make your backlights last longer.
Vacuum dust from your TV. Dust can accumulate and catch fire inside the TV.
*** IMPORTANT- PLEASE READ BELOW BEFORE REPLYING ***
Please contact me with your MODEL NUMBER, and DESCRIPTION of the problem. The model number can be found on a label on the back of the TV. I can not help you without this information. If your tv is unrepairable (cracked screen, lines) and you are offering your tv for pickup, I will need your location as well. Thanks for looking.
Email contact preferred. Please do not ask me to phone or text you. Check your spam folder for CL-relay email.
do NOT contact me with unsolicited services or offers