sourcing led backlight strips...

[lookimback]

Re: sourcing led backlight strips...

I think I'm going to see if I can use one of these for a bulb in my mini Mag lite. These things are super bright.

[lookimback]

Re: sourcing led backlight strips...

It's nothing. I'll get them in the mail on Monday. Just be certain to let us know how it goes. And pay it forward.

[hicksvilleshick]

Re: sourcing led backlight strips...

Putting them on is going to be tricky. You have to be quick, or they melt. Once you get them in place, you have to somehow heat the bottom to reflow the solder on that ground plain, or they won't last long.

Duuuude. Thank you so much, I'm just happy to have a direction to go...

sucks to have that nice tv and 1 stupid little part keeps it from working...


:chug:

[lookimback]

Re: sourcing led backlight strips...

Putting them on is going to be tricky. You have to be quick, or they melt. Once you get them in place, you have to somehow heat the bottom to reflow the solder on that ground plain, or they won't last long.

[lookimback]

Re: sourcing led backlight strips...

I would test the rest of them. Use 2 AA batteries in series. 2 new ones will be about 3.2v. The end with the little dot is positive. Wear sunglasses.

[lookimback]

Re: sourcing led backlight strips...

Oh, OK. I just did the same with a razor and flooding it with solder. Melting didn't work so good.

[hicksvilleshick]

Re: sourcing led backlight strips...

I mean, removing the bad ones from your board. I'm saying, trying to remove them in one piece will probably result in damaging the rest of your strip, which you need to save. If you just get them hot enough, they will break apart. Then you can desolder the individual pieces from the strip. I already got 10 off and they are in good shape.

oh. We've already removed what we believed was the bad one... with a pocket knife... :yikes:


:chug:

[lookimback]

Re: sourcing led backlight strips...

I mean, removing the bad ones from your board. I'm saying, trying to remove them in one piece will probably result in damaging the rest of your strip, which you need to save. If you just get them hot enough, they will break apart. Then you can desolder the individual pieces from the strip. I already got 10 off and they are in good shape.

[hicksvilleshick]

Re: sourcing led backlight strips...

These ones have a ground plain on the back. Real pain to get off in one piece. I got about 10 off, but at the expense of ruining the strip. I sliced them off with a sharp razor and then removes the remains of the traces from them. I think you are going to have to just get them hot and break them in half, if you don't want to damage your strip. And these work at 3.2v, I'm blind now BTW.

LOL! I'm sorry your blind now. I guess I'm not following how your talking about putting them back on... Would getting them hot and breaking them in half, um, break them?

[lookimback]

Re: sourcing led backlight strips...

These ones have a ground plain on the back. Real pain to get off in one piece. I got about 10 off, but at the expense of ruining the strip. I sliced them off with a sharp razor and then removes the remains of the traces from them. I think you are going to have to just get them hot and break them in half, if you don't want to damage your strip. And these work at 3.2v, I'm blind now BTW.

[hicksvilleshick]

Re: sourcing led backlight strips...

I found on some LED strips like you showed usually 4 chnnels each channel had 25 leds.
They are a pain to remove becsause the back of the LED where its bonded to heatsink with a heatsink epoxy. without it they get too hot and fail prematurely.

Where did you find these??? Sounds right cause these are like super stupid sticky glued to the metal...


:chug:

[Ltank]

Re: sourcing led backlight strips...

I found on some LED strips like you showed usually 4 chnnels each channel had 25 leds.
They are a pain to remove becsause the back of the LED where its bonded to heatsink with a heatsink epoxy. without it they get too hot and fail prematurely.

[lookimback]

Re: sourcing led backlight strips...

Possibly. Just hard to tell from a pic.

[hicksvilleshick]

Re: sourcing led backlight strips...

They're approximately 3mm by 5mm, not counting contacts.

I'm lost there, I couldn't tell you how long/wide they are, but they appear to be the same type as that bottom set you posted. Are there different sizes of that type?

I will pull it apart either tonight or tomorrow morning and see if I can get a measurement on them...

[lookimback]

Re: sourcing led backlight strips...

They're approximately 3mm by 5mm, not counting contacts.

[hicksvilleshick]

Re: sourcing led backlight strips...

I found one more type in the basement. Here's a pic of the 3 types I have. 2 strips say 94v so I suppose I can divide that by the number of LEDs to get individual voltage ratings. Third strip doesn't say.

They are identical to the ones on the bottom...

Here's a close up...



iirc, I was told they are 3.2v but I'm pretty clueless when you get that far into it.

Here's a link to my first thread hunting this down... if it's helpful.
https://www.badcaps.net/forum/showthread.php?t=40892

[lookimback]

Re: sourcing led backlight strips...

I found one more type in the basement. Here's a pic of the 3 types I have. 2 strips say 94v so I suppose I can divide that by the number of LEDs to get individual voltage ratings. Third strip doesn't say.

[lookimback]

Re: sourcing led backlight strips...

Those are edge lit then. I have to look in my basement and see if I have any I haven't pulled yet. When you open it up, get some closeups of the individual LEDs. I've got a couple different types, but probably not that same strip. If they're the same, I can pull a few and send them to you.

[hicksvilleshick]

Re: sourcing led backlight strips...

OK, because I know I have some strips. I just don't remember what they go to. Are they the edge lit type or the ones which are on the back?

Edge... it's kinda odd, only on left side of panel, and under a metal plate... it seems they are just glued to the metal cover.

here's a not so great pic.



I don't think that shows quite the full length, but close. (I just found this pic, I'm sure it would've been helpful earlier.)

[lookimback]

Re: sourcing led backlight strips...

OK, because I know I have some strips. I just don't remember what they go to. Are they the edge lit type or the ones which are on the back?