Sony LED 65X9005A shuts down after few seconds - looking for help

[Diah]

red probe on the wire self ... not in the sockets.... don't ground any thiungs

[tec3000]

red probe on the wire self ... not in the sockets.... don't ground any thiungs

sorry, I didn't see your post before. So, I got really low values. I changed the MM to 2V and still only got 0.14-0.19 max. Then it turned off.

[Diah]

sorry, I didn't see your post before. So, I got really low values. I changed the MM to 2V and still only got 0.14-0.19 max. Then it turned off.

then the error not LD..
put back the wire to socket and pull BL_err wire from socket CN6602, this time the red probe on the socket pin not the wire...

[tec3000]

Like so? I got zero Volt.

[Diah]

repair the LED BL and give it another 11 years to life...its nice solid TV with 3D which you will never find these days one like it.

[tec3000]

so I did the measurement correctly? 0V?

Is it easy to repair the LED BL? How? Do I replace it or repair it?

[EazyBone]

It's not difficult if you go slow enough. If you get impatient the screen will go crack. Try and find a video for this TV. Make sure you replace grounding tape, and make sure you have a plan on how you plan to remove the screen, suction cups or lifting straight up etc. I use double suction cups, one for each hand from harbor freight for $8 a piece and makes it quite easy. I use masking tape to hold the buffer boards to screen.

[Donny2derby]

I have a better idea. Send it to me, I'll repair it and sell it back to you for a huge profit😁

I jest. If this is the first time attempting anything like this it would be much much easier if you can get a friend round to help. It’s so much easier. An extra set of eyes/hands. You can exchange ideas with each other about how to unclip and remove things, move the screen, be extra careful with the delicate bits. You also have the reassurance that you’re both happy this bit went there or here.

Good luck! 🤞🏻

[Diah]

Is it easy to repair the LED BL? How? Do I replace it or repair it?

Nothings Impossible, but you need to make plan first and as other said patient.

Plan first where you can hold the LCD Panel after you take it out for long time until you finish the repair..
second right now you can disconnect the 4 ribbon cable from T-CON to panel from T-CON side.( be careful the ribbon old the contact pins easily damaged ) then turn on.... you will see the LED BL come on. this mean after you took the panel out you can always switch the TV ON and check if yours work on BL are correct and all lit on.
third after you take out the panel.... try to take all light filters sheets at once and keep them tight in same order and remark the top one corner to let you easy put them back at same place and order after you finishing the work.
fourth , the solid reflector plate ( which are the bottom ) in some Sony Model they use 2 pieces clued with transparent Type. be cardull when you handle it and mark its position as it could had different surface as top and down.

that's all..

later 2016 Sony used double LED for edge, also after you have access to LEDs here allot of people will help you to know the kind / Type of the LEDs you have... on Aliexpress you can buy 100 pieces just for 5-6 $, so you can change all at once or if you find strips ready mounted will be better..

[tec3000]

Ok guys, you convinced me. I will do it. I will ask a few questions and I am counting on your assistance. But before I order suction cups and LED strip etc. I wanna show you what my TV looked like before the latest issue started. Because it wasn't perfect... Please take a look at the pics. I found these on my phone. They are pretty recent. As you can see there are two lines present:

1) a mostly green horizonal line that covers the entire screen from left to right smack in the middle. (sometimes reddish, sometimes black/grey thin line).
2) a blue vertical line at the left side of the screen that starts from the middle and goes up.

Also I think I made a mistake yesterday. I disconnected a cable from the T-CON board. I think Diah that's exactly the cable you were talking about in your latest post. I put it back in but I have a lot more vertical lines now on my TV. I took a new photo of the i-Manual because there it's obvious how my TV now looks That's the last pic.

After seeing these pics would you still advise me to go ahead and change the backlights?

[EazyBone]

Definitely do not change them now. Those lines aren't generally reversible.

Tv is now toast. Appears you have shorted the panel somehow. If you plug tv in with one of ribbon cables disconnected and the contacts touch ground, could of messed something up

[tec3000]

you mean the ones from the i-manual? They were even worse. Colours were all messed up. I smoothed out the cable and plugged it back in. Since then it's like that. I thought a new cable would solve it. But I guess not?

[Davi.p]

Reading all the thread is quite hard but, i would warn you that these types of led drivers are not so easy to understand, these are called local dimming, in an e-manual maybe local dimming is disabled and all led sectors acts uniformely, there is even an embedded software for driving leds on the basis of different images, a bad software can drive some leds over voltage and the voltage protection cuts off all.. my advice is to first search a decently cheap led board, and try, if it dont work you can get the risk of handling so an heavy beast, plus, since leds are not faced directly to the led booster, them are protected respect convetional lcd tv. Bye..

[tec3000]

Thank you. That's what I'm trying to figure out. Did you take a look at my latest post and the 3 pictures?

[Davi.p]

Ok now i seen them all, the second one tells clearly there is a "dot crack" and can't be done a thing, sorry, the cracks usually runs, them can easily worsen, i would not spend an euro on it..

[Diah]

at my post #49 i warmed you when disconnect the 4 ribbon (( ( be careful the ribbon old the contact pins easily damaged ))

now they are bot damage but some how lost connection.. take them out and clean them as well the sockets at both side Panel and T-CON then put them back carefully.. hope you have clean picture.

[Davi.p]

Don't dream... 100euro my bet there's a little, very little hole in the screen.. (where the 2 lines joins) inspect there..

[tec3000]

Don't dream... 100euro my bet there's a little, very little hole in the screen.. (where the 2 lines joins) inspect there..

We are talking about 2 different issues... time-wise. I took the first two pics while my TV was still fully functional. I had these lines for about a year. They were distracting at times. But most of the time they were barely visible. Since it's an older TV I was OK with it.

The last picture of the i-Manual however is the new issue. I took off the flat ribbon cable (I think) and plugged it back in and all of a sudden I have this mess. The lines only appear at the top half of the tv btw. Everything below is OK. (pic 3)

I really don't know how I could have been more careful while disconnecting it Diah
The cable is not very hard and easy to bend. So I'm SHOCKED if this lead to a permanent damage. Would exchanging the cable not fix the issue? I attached a pic of the flat ribbon cable in question.

I just disconnected it and tried to clean it but it looks all good to be. And there is not really space to clean it. Is that even the cable you were talking about? I smoothed it out a bit with my hand plugged it back in. It didn't get any better. Permanent damage then?

[Davi.p]

I don't know how can the two crossed lines appear and disappear, the fact is that in the point them meets there is a short, more likely a crack or pressure damage and that is not fixable, each pixel has 1/2 mosfet, normally the gate is insulated from the DS channel, if the gate signal (-6/27v) shorts to Source value (0-15v) or the vcom (7v), it can result in unbalance that can disturb the normal gate drivers scan and job, so i mean that you by moving, touching, pressing that faulty dot, you worsen the situation.. what you can do is to try massaging that dot with a sphere pen tip, hoping the short frees, or there are short killing electrical techniques, don't ask me how.. its long to tell..

[tec3000]

the green horizontal line appeared long before the blue vertical line. About 8 months later. The lines may not completely disappear, but they were very thin and almost invisible most of the time. Then they came back - depending on the colour output of the TV. That all happened while the TV was on the wall. I never touched it for more than a decade!