TV Repair Questions? Ask a TV Technician for Answers ASAP
Hi , my name is JackPerhaps i can help you with this
Send me a hello when you see this so i know you are available ?
When you say backlight board you mean the LED driver board ?
If you turn the tv off and back on again do you get a brief flash of light or perhaps the company logo on the screen before it goes dark ?Is the screen just blank with some background light or completely dark like when the tv is off ?
When this first happened , did you still have sound ?
O>K by replacing all the boards you confirmed what I could`ve told you to start with (and save money +time) , you have defective led strips at the back of the panel and this is getting to be quite common fr all LED backit TV's
Those LED`s are supposed to last a zillion hours but they do not , they are failing all over the place
More to come
Now I did a search on this model for those strips and all I could find was for the model TX-L42E5B , see the link below ;
It could still fit your tv though , look at the bottom of that page and you will see the lcd panel sticker number , see if it matches yours
Otherwise perhaps your part supplier could have that
If you can return your boards then all the better
If that answers your questions for now then PLEASE DO TAKE THE TIME TO RATE (stars above and submit), it does not cost you anything more and does not close this post ,Also you can come back at any time without additional charges if you have further questions or need help and it gets this independent tech. paid for his time helping you .
OK then , I thought you had no backlight since you replaced the LED driver board , hence that being my first question
Was that the original problem ?
A blank lit screen ?
Ne menu either ?
Only thing i could see here would be that your new t-con is defective
Pull the LVDS cable out at the bottom connector or at the main board and re-inserted it loosely then wiggle it
See if the screen has any flash or blinks
If not then you could have a dead t-con
Did you see my last post ?
That is a way to test it , we do that in repair shops and also , there should be some 12 volts coming into it
I don`t know what you tried beside replacing those boards
Good luck with that now
If all of the boards are good then the display panel itself is suspect.