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Version actuelle par : Robert Nawfal ,

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Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.
 
=== Update (08/08/2020) ===
# '''Everlight ELSH-J11N(X) seems to be a pretty close to identical product to these Lumileds.'''
The best match in alibaba that I found to replace the LEDs.[br]
LED lighting ELSH-F91N1-0CPGS-C4500 SHUEN NEUTRAL WHT 4500K 2SMD
 
https://www.alibaba.com/product-detail/LED-lighting-ELSH-F91N1-0CPGS-C4500_1600084289857.html?spm=a2700.galleryofferlist.0.0.28b23d977FkGg3

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.
 
=== Update (08/08/2020) ===
# '''Everlight ELSH-J31NXELSH-J11N(X) seems to be a pretty close to identical product to these Lumileds.'''
# The closest I found in alibaba:[br]
https://www.alibaba.com/product-detail/LED-lighting-ELSH-J31M3-0CPGS-D2700_1600084363156.html?spm=a2700.galleryofferlist.0.0.4608db60PfD8Ef
#
# '''Everlight ELSH-J31NXELSH-J11N(X) seems to be a pretty close to identical product to these Lumileds.'''
# The closest I found in alibaba:[br]
https://www.alibaba.com/product-detail/LED-lighting-ELSH-J31M3-0CPGS-D2700_1600084363156.html?spm=a2700.galleryofferlist.0.0.4608db60PfD8Ef
#

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.
 
=== Update (08/08/2020) ===
# '''Everlight ELSH-J31NX seems to be a pretty close to identical product to these Lumileds.'''
# The closest I found in alibaba:[br]
https://www.alibaba.com/product-detail/LED-lighting-ELSH-J31M3-0CPGS-D2700_1600084363156.html?spm=a2700.galleryofferlist.0.0.4608db60PfD8Ef
#

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.
 
=== Update (08/08/2020) ===
# '''Everlight ELSH-J11NXELSH-J31NX seems to be a pretty close to identical product to these Lumileds.'''
# '''Everlight ELSH-J11NXELSH-J31NX seems to be a pretty close to identical product to these Lumileds.'''

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.
 
=== Update (08/08/2020) ===
# '''Everlight ELSH-J11NX seems to be a pretty close to identical product to these Lumileds.'''

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]
 
=== Update (24.07.2020) ===
[image|2164951]
 
I found the Lumileds to order, but investing like 130CHF (approx. 130USD) is a bit too much for the moment, for this project. Besides I tried unsoldering with hot air station that I ordered a few of those LEDs and it is indeed possible but quite tedious, so perphaps not worth the time and money.

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.
 
=== Update (06/14/2020) ===
[image|2135344]
 
[image|2135343]
 
[image|2135340]
 
[image|2135341]
 
[image|2135342]

Statut:

open

Modifié par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!
 
=== Update (06/14/2020) ===
I got some more equipment and returned to fix my 24” cinema display. So in the meanwhile the display was working like every second day by chance. In the meantime I found a donor cinema display with the same defect. Backlight shutdown after a flicker of light.
 
So I decided to open my display again and took out the led strip totally to test it. I only have a 30V regulated power source so I could test the whole led array (60Volts needed). But I tested the leds individually and they seemed to at least light all one by one with significant differences in luminousity. Now I wonder how to find out which ones should I replace without desoldering all of them. I desoldered 4 of them with my new hot air station, but it is quite tedious to get one out.

Statut:

open

Contribution d'origine par : Robert Nawfal ,

Texte:

Update (2018/09) My display is still up and running after changing the Capacitors, but I reckon this is only coinsidense. I would advice you to have  a look at James Stuart comment/explanation below. I think it makes the most sense and explains the cause of the problem well!

Statut:

open