I have a RCA 50B45RQ with a bad LED on one of the strips kicking me out on over current protection. They used several different strips in this model depending on when it was built. Mine uses ic-a-kjab50d354 which at this time not easy to find from a harvester. I was wanting to know if anyone has successfully changed the SMD on one of these strips?
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Re: LED Strip repair for RCA 50B45RQ
youtube: norcal715
there is a video from him doing just that. -
Re: LED Strip repair for RCA 50B45RQ
Capleaker. Which video is it. I didn't see it when I searched Youtube. Thanks, JohnComment
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Re: LED Strip repair for RCA 50B45RQ
Look for his Lg 47" Led repair.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LED Strip repair for RCA 50B45RQ
The fault is probably not a over current but a faulty LED string
find the faulty LED and just short it out (if they are all in series)
done this plenty of times , be careful of the LCD screen they are extremely fragileComment
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Re: LED Strip repair for RCA 50B45RQ
No dont short it out very bad idea ! Doing that means the others have to drop more voltage across them due to one being skipped over, meaning the others get hotter and more likely another one will fail shortly after due to this.
Leds in Tv's are in series, and when one fails it normally fails O/C meaning the chain is broken so non of them will light. Shorting it out is not a good idea trust me.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LED Strip repair for RCA 50B45RQ
yes you are right ,but there are many more LEDs in series in these sets and the difference for each one of them will be very small . The best idea is to add 5x 4004 diodes in series (approx 3.5 volts) and place them across the faulty LED ,then there will be no increase on the other LED's
I have done this on 2 sets and works well ,with no noticeable image issuesComment
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Re: LED Strip repair for RCA 50B45RQ
Fair enough, yes best way is to either replace the Led with a 1w Smd type or sub it with a resistors or diode. Then to save the others turn down the backlight brightness
Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LED Strip repair for RCA 50B45RQ
I was able to track down the bad LED when I posted. The strip I had was an odd part number that wasn't easy to find but one of our fellow members hooked me up. Up and running. He also gave me a bad strip so I could practice SMD replacement.Attached FilesComment
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Re: LED Strip repair for RCA 50B45RQ
Awesome let us know how it goes when all back together
Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LED Strip repair for RCA 50B45RQ
It's up and running nicely.Comment
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Re: LED Strip repair for RCA 50B45RQ
PicAttached FilesComment
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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, I am installing a long led strip and I noticed that it frequently flickers slightly, it is not a strong nor regular thing, but it is noticeable and annoying. I have measured the voltage of the mains and it shows some fluctuations, it normally stays at around 226v, but often (every few seconds) drops down to 218/219v), and the flickering happens exactly at the same time. I have measured this at the counter and with every appliance off, so it's not related to the house electrical system, but that's how it comes from the supplier.
I know that the best solution would be to get a voltage... -
I wonder if i shorted the whole strip...where to put pos and neg to just light up a single diode...or the entire strip. The strip lit for a second...so maybe i fried it? What say you?
I have an adjustable dc power supply and was trying around 9 volts.
I have a pic of a single diode...where to put pos and neg terminals to light it up?
Pic of middle of strip..is this where i light the entire strip?
And pic of end...or does this light the entire strip?
Where to put pos and neg for single diode..multiple diodes and the entire... -
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... -
Hi,
Got this working ips led monitor by the brand of
Iiyama Prolite XUB2390HS presumably a 23 inch type given to me with suspected bad led backlight. To test it, i unplugged the bad flat ribbon type connector and plugged it a good flat ribbon led connector scrapped from a HP Pavillion 27cw (led strip with 60 led). Good news is the HP led strip lights up but not fully, in between there are about 15 unlit leds.(as picture attached shows).
Fyi, i had not opened and removed the old bad led strip. My question is whether is it possible to cut some of the extra leds(say...
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