Apple Cinema Display 23", Acrylic - Problems
Hello everybody!
My first post here, congratulations on this exciting forum!
Sometime ago I purchased an old Apple display (the one in the title, I don't know how to find out about the exact model). I use it with my macbook pro (2.4 santa rosa model) through the Apple's ADC to DVI adaptor, with an external apple power supply.
The display works decently, but usually after three days or so of being constantly connected to the macbook pro, it goes black and won't light up again. The light at the bottom right corner is dim, and when touched it will brighten up momentarily and dim again. The display won't respond to anything ( unplug everything, restart, reset SMC, PRAM, VRAM etc). When I disconnect the screen and leave it for a week or so unused, it works again for a short while, as previously. I also noticed (once I think) that the small light flickers occasionally.
Some online fixes suggest replacing the external power adapter, which I did by trying another one definitely working and had the same problem, so I guess this is not the case.
One of the responses I got from the MacOSXHints forum is that most probably this is due to the inverter board. So I decided to do a little operation, and, according to a few posts I read here, replace any electrolytic capacitors that may look problematic. There were two electrolytic capacitors on the inverter as you can see in the images below:
I noticed there was a small abnormality on one of the two, as you can see in the following image:
So I decided to replace both these capacitors, in case this would solve the problems. Below is an image of the inverter board with the new capacitors (they were both 35V, 220uF):
I connected the screen to the computer, and it was working fine! I took an image of both the inverter and logic board (notice the green led on the logic board, indicating that the screen in on).
I closed everything up, I replugged the screen to the computer, and....
NOTHING AGAIN! The frustration... The anger... The lost time...
So, any thoughts, anyone? I really want to keep this screen, and I am really keen on repairing it myself, even if I have to dig deeper.
Thank you and sorry for the long first post
My first post here, congratulations on this exciting forum!
Sometime ago I purchased an old Apple display (the one in the title, I don't know how to find out about the exact model). I use it with my macbook pro (2.4 santa rosa model) through the Apple's ADC to DVI adaptor, with an external apple power supply.
The display works decently, but usually after three days or so of being constantly connected to the macbook pro, it goes black and won't light up again. The light at the bottom right corner is dim, and when touched it will brighten up momentarily and dim again. The display won't respond to anything ( unplug everything, restart, reset SMC, PRAM, VRAM etc). When I disconnect the screen and leave it for a week or so unused, it works again for a short while, as previously. I also noticed (once I think) that the small light flickers occasionally.
Some online fixes suggest replacing the external power adapter, which I did by trying another one definitely working and had the same problem, so I guess this is not the case.
One of the responses I got from the MacOSXHints forum is that most probably this is due to the inverter board. So I decided to do a little operation, and, according to a few posts I read here, replace any electrolytic capacitors that may look problematic. There were two electrolytic capacitors on the inverter as you can see in the images below:
I noticed there was a small abnormality on one of the two, as you can see in the following image:
So I decided to replace both these capacitors, in case this would solve the problems. Below is an image of the inverter board with the new capacitors (they were both 35V, 220uF):
I connected the screen to the computer, and it was working fine! I took an image of both the inverter and logic board (notice the green led on the logic board, indicating that the screen in on).
I closed everything up, I replugged the screen to the computer, and....
NOTHING AGAIN! The frustration... The anger... The lost time...
So, any thoughts, anyone? I really want to keep this screen, and I am really keen on repairing it myself, even if I have to dig deeper.
Thank you and sorry for the long first post
)
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