Does anyone know of a ptc heater that does not burn the LED strip when replacing single LEDs? I'm trying to refurb LED strips and I want my strips to stay as white as possible. On the youtube videos their ptc heaters don't burn the strip at all hardly. Any help or methods would be greatly appreciated.
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Re: Replacing LEDs on LED strip
i replaced leds, by heating the strip till the solder melted and then after few more seconds while keep heating, i placed the led and stay for just the time to get it in perfect position without damaging anything. cheap and simple.
with that method i replaced about 10 leds without any adamage.
ofcourse a preheater would be better, but if u dont get the strip till the melting point (183 with new leaded solder) u still need the hot air. -
Re: Replacing LEDs on LED strip
Go to Aliexpress and search for "LED Lamp Remover" to locate < $5 USD heating tables for this purpose.
DIDIHOU Tools Store has one for $3 USD + shipping.
These tools are very common to fix back / side lighting strips in TV, etc. as they are aluminum PCBs.Comment
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Hi There!
I'm trying to help my friend who owns a restaurant be just bought.
He has a very long LED strip running along all the walls and columns. The strip is attached facing down 2in above the floor, using a wall panel that ends in a metal rail that finishes the panel underneath
It's stuck using, I guess, the 2 sided tape that comes with the strip
The issue is that like 1/2 of the full length, including 1/2 one wall, another entire wall, and one column, flickers after 4 or 5 minutes ON. Particularly it flashes staying OFF most of the time and flashing ON for 1 tenth... -
Hi all,
I have what should be a simple job but is causing me issues. There are three LEDs (yellow, green and red) on the indicator panel of a solar PWM controller and these have broken off. I need to replace them but I am unsure of the voltage drop across these. I don't want to replace with random LEDs in case they blow.
I took one of the LEDs out of circuit, put 19V across it with a 500 ohm resistor in series and there is a drop of about 13V across the LED, and this seems to increase as I increase the input voltage.
I thought I could just put a resistor... -
Hi There!
Having fixed 5-6 TV sets by replacing full LED strips, and having watched other people fix that by replacing just one LED in the strip, my question now is what should I consider before doing so.
At this time I have some old strips removed from TV's with all but one LED working. Are there different voltage/current LED on different strips? Are 99% of them just the same and interchangeable?
How do you find which specific model is needed for each strip? When I check if a LED is OK by attaching the multimeter leads to the individual led pads on the strips I... -
I got the TV from a friend. He claims that no image but sound from the TV.
I confirmed that when shine a flashlight on to the screen, I can see the image. And this should be backlight problem.
I open up the TV and found a few leds failed. And now I am ordering a new set of backlight strips for it.
But there is something that I do not understand when checking the leds. I do not have an led tester. I only use a bench power supply. I first set the voltage to 3V and current to 10mA. I could not light up the led until I increase the voltage to 12V. I understand most... -
Hi There!
I bought a broken 32" TV today. It has sound but no image. I checked with a flashlight and it was missing backlight
Disassembled down to the led strips and found this TV has been serviced before. Not sure if it was fixed, worked again for some time, and broke again, or maybe last repair wasn't successful
Looks like on previous repair, the center LED strip was replaced with a different model, 7 leds in it instead of 8, but when checking LEDS one by one, leds on the center strip were brighter with same test voltage (multimeter in DIODE mode) so maybe the...
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