What to do with bad LED strips?

[eccerr0r]

I suspect a lot of you have done a lot of repairs and end up with a lot of bad LED strips...what do you do with them?

Wonder if I should get a pile of LED chips and try to replace the bad units for the heck of it, but I don't really need the strips at the moment because I bought the strips...

Oh... and I think I got my TV working again, though not 100% I don't think, on a white screen I can see a bit of the ghost of the LED strips, must have done something wrong or the LED strips aren't quite the same as the original...

[eccerr0r]

Re: What to do with bad LED strips?

Do people re-LED the strips? Or generally buy strips?

I wonder what LEDs I should collect for future backlight repairs... probably should get 1W 3V 3030 or 3535s at least so I can swap the LEDs out again when they burn out, but what are the prevalence of 2835's or 2W/6V or 3W units, or something else for other TVs... ?

[angelos]

Re: What to do with bad LED strips?

I suspect a lot of you have done a lot of repairs and end up with a lot of bad LED strips...what do you do with them?
I keep them in case i need to pick a lens off it. There may be a day that i will repair them and thegn have them ready when i need them but i never got round to doing it because i am lazy.

[angelos]

Re: What to do with bad LED strips?

Oh... and I think I got my TV working again, though not 100% I don't think, on a white screen I can see a bit of the ghost of the LED strips, must have done something wrong or the LED strips aren't quite the same as the original.
Send us a picture so that we can see what is going on

[alfatv]

Re: What to do with bad LED strips?

What is TV model number?
Did you put sheets in the right order?

[angelos]

Re: What to do with bad LED strips?

Do people re-LED the strips? Or generally buy strips?
Every technician has his preference. I, personally would like to replace them with new ones all the time except that the time to receive these imported LED's is in the months and my clients don't want to wait so I end up repairing them. Repaired LED's where you unsolder the 3030 LED from the board and fit a new one comes with risk and time. The risk is that you don't do it right and your tv is a comeback and the time is on average it takes me 9 hours of labor to fix 90 LED's. Is it worth it in order to save $40? Absolutely not. If I repair the LED's I make sure that I can reduce the current so that the repaired LED's do not drive at 300mA but rather at around 200mA. Then I can guarantee that the set will run without problems for a long time. Remember that the 3030 LED's you but from Ebay or Aliexpress all come from China and these suppliers are unscrupulous and will sell you reject stock or underrated parts so you will have a comeback.

[angelos]

Re: What to do with bad LED strips?

What is TV model number?
Did you put sheets in the right order?

+1

[angelos]

Re: What to do with bad LED strips?

I wonder what LEDs I should collect for future backlight repairs... probably should get 1W 3V 3030 or 3535s at least so I can swap the LEDs out again when they burn out, but what are the prevalence of 2835's or 2W/6V or 3W units, or something else for other TVs... ?
Yes, the most common LED's are the 3030 3V and 6V 1W type. The 3535 are not so common and all the other types are really uncommon in my country.

[eccerr0r]

Re: What to do with bad LED strips?

I also wonder if the strips ever come bad or have premature failure too, which also could cause a callback - so either way there's a risk.

hmm.... my TV apparently uses 3535 (samsung) according to measurements and matching photos of the units. Hence wondering if I should get some 3535s but perhaps I can squeeze 3030s on the pads...

I'm sure the sheets are in the right order because I made sure I didn't take them out when not necessary. However trying to squeeze the back panel back into place was tricky. The display doesn't look that bad, can't even notice any splotches or anything when there's a regular picture on the screen, but on a fully white screen I do see some very faint splotches, maybe I'm expecting too much, I don't know what a new TV looks like on the same screen because it's rare that a fully white screen is displayed on the sales floor...

Fortunately this is my personal TV so I can negotiate with the owner all I want I thought I paid too much for the strips, mainly because I had no space for leaving the TV opened up to do triage, next time I really want to have generic parts ready to repair these hence ideally having the LEDs ready to go instead of dealing with ordering strips. I don't foresee myself having a lot of the same TVs to repair so unfortunately preordering strip inventory is not a very sound idea for me...

[nomoresonys]

Re: What to do with bad LED strips?

yes they arrive bad sometimes, ALWAYS check them before installing.

[eccerr0r]

Re: What to do with bad LED strips?

I did a quick go/no go test, but didn't test at full current, which was unfortunate. But even so, it may still fail after the initial test...

Either way if you solder in new LEDs, they are exactly the same, could be good or bad...

BTW do they (chinese LED manufacturers) put failed components in tape? I can imagine them dumping failed units into a bag and selling them, but if they put it in a tape, there should be higher chance they actually passed testing?