I have a samsung un60j620dafxza with a many dead leds' for the backlight. What is the proper replacement for this tv. I'm looking to put them on myself, just need the right part to buy. I do have all the equipment to put on the smd's.
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samsung un60j620dafxza backlight led smd diode
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Re: samsung un60j620dafxza backlight led smd diode
Samsungs, unlike LGs, dont have a protection mode which shut down the backlights . I typically find 50 to 90% of leds bad and will do a full strip replacement. Repairing individual LEDs is a lot of work and the remaining ones are likely to fail. Shopjimmy can give you a clue what strips are in your tv if you search the full model number.
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Re: samsung un60j620dafxza backlight led smd diode
Yeah going new is 100 and only 10 bucks for loose smd. I have the right equipment for the job again just need to know what kind to get. The old ones that still work uses 770 mA at 30 volts so 23w or 4.3dc at 100mA at .43 Watts each with 7 each on a stick. So should I get 6v at 1 watt or what is best? Maybe 2 watt since they seem to blow more and just throttle them back to last longer? Idk that’s why I’m asking!
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Re: samsung un60j620dafxza backlight led smd diode
Here's an ad with close up of the numbers on the strips, maybe someone can figure out what they are by that: https://www.ebay.com/itm/Samsung-BN9...0AAOSw8oxaw~Ql
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Re: samsung un60j620dafxza backlight led smd diode
Where are your pictures? Without pictures, all WE are doing is "dumbly guessing". How did you get the voltages? I would suspect that the LEDs are around 3V devices. If they are being driven to 4.3V, that explains why you have so many failures. Is the large pad the CATHODE or ANODE? What is the size of the device?
It is incorrect to assume that Samsung only uses one kind of diode or another. Each set has to be evaluated as to the "flavor of the day" LED wise. Mostly, they used 3V one watt devices. Unless you plan on redesigning the strip PCB, you'll have to stick with what they originally used.
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Re: samsung un60j620dafxza backlight led smd diode
Originally posted by neilc6 View PostThe other issue is that the lenses have to sit perfectly both centered and height. Slightly off will create bright spots. A couple may not be too noticeable but if all the LEDs are off it's going to look terrible.
I just need the data on the best to get.
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Re: samsung un60j620dafxza backlight led smd diode
Originally posted by nomoresonys View PostHere's an ad with close up of the numbers on the strips, maybe someone can figure out what they are by that: https://www.ebay.com/itm/Samsung-BN9...0AAOSw8oxaw~Ql
Thanks and if you can think of anything else that would be helpful please pass it along.
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Re: samsung un60j620dafxza backlight led smd diode
Originally posted by SLK001 View PostWhere are your pictures? Without pictures, all WE are doing is "dumbly guessing". How did you get the voltages? I would suspect that the LEDs are around 3V devices. If they are being driven to 4.3V, that explains why you have so many failures. Is the large pad the CATHODE or ANODE? What is the size of the device?
It is incorrect to assume that Samsung only uses one kind of diode or another. Each set has to be evaluated as to the "flavor of the day" LED wise. Mostly, they used 3V one watt devices. Unless you plan on redesigning the strip PCB, you'll have to stick with what they originally used.Last edited by ca2014mp2; 06-17-2019, 12:42 AM.
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Re: samsung un60j620dafxza backlight led smd diode
https://www.aliexpress.com/item/100P...967087145.html
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Re: samsung un60j620dafxza backlight led smd diode
Originally posted by ca2014mp2 View PostYeah going new is 100 and only 10 bucks for loose smd. I have the right equipment for the job again just need to know what kind to get. The old ones that still work uses 770 mA at 30 volts so 23w or 4.3dc at 100mA at .43 Watts each with 7 each on a stick. So should I get 6v at 1 watt or what is best? Maybe 2 watt since they seem to blow more and just throttle them back to last longer? Idk that's why I'm asking!
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Re: samsung un60j620dafxza backlight led smd diode
Just to comment on this subject i full agree replacement of all the strips is the fastest and easiest. For those who are familiar with SMD component soldering and choosing to replace the defective LEDs, hot air works great and it’s just a few seconds to remove the bad ones and another minute or so to reflow the replacement. Without familiarity of using hot air, however, there is no other solution unless one want to purchase a hot plate, cost more than the entire replacement areas of LEDs
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