Have TV Questions? Ask a TV Technician
Hello there and welcome to Just Answer. My name is ***** ***** I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.
I do not have good news: this is most likely the failure of a sustain buffer board but it could be other things. A repair will require taking the set apart and swapping out one or more boards. Is that something you could do yourself? If the TV is out of warranty, it will probably be a repair in the $300 range, maybe more depending on the availability of parts.
I can help you troubleshoot or I can find you a tech in your area.
How would you like to proceed.
Ok, that's excellent. Let me grab the manual off my work server and we can start. Hold on please.
Ok, now you say that the problem is in the middle 1/3rd of the screen. If you divide the screen in half - upper and lower, are the 'lines' in the upper, lower or both?
Secondly, it sounds like these 'lines' do not completely traverse the screen from left to right. Is that the case?
Please let me know so that we can continue.
Ok, hold on please. I'm wondering if the 58" has three buffer boards. Let me check.
Ok, got that. Please hold for a second, I'm pulling some documentation from my office server.
Nope, this set has an upper (SU) and lower (SD) buffer so let's be clear about these lines. The photo you sent makes it appear that the lines are over a considerable portion of the screen, not the 'middle third'. Can we say that the lines appear in the top half and the bottom half of teh screen simultaneously?
I see the horizontal lines.
I assume this happens on all inputs and and iin the TV's own menus also. If so, then we need to look at SC, SU, SD and SS. It could under some circumstances be the D board and it could very well be your actual panel.Hold on please.
I would remove the SU SD and SC boards and then put them back again. The three are interconnected so this might fix a troublesome connection between them. Also remove and replace back the SS board.
Once you have done that, if the lines are still there, see if the lines have 'moved' location.
Yes that sounds like the correct approach. And I will be here tomorrow.