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当前版本: rdklinc ,

文本:

It's odd that the screen would be completely dark with no faint image.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (screen, inverter, inverter cable, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be stuck in an "external monitor mode" of some type. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Lastly, I would try disconnecting the topcase/keyboard entirely, and jumping the machine's power via the power-on pads on the board. I've seen electronics in faulty topcases (usually in A1181s) cause a machine to "stick" in odd video and sleep related modes, so it would be useful to rule that out.
 
Also, try disconnecting the PRAM battery, and powering on with it disconnected, and then powering on again with it re-connected.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely darkdark with no faint image.
It's odd that the screen would be completely darkdark with no faint image.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (screen, inverter, inverter cable, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be stuck in an "external monitor mode" of some type. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Lastly, I would try disconnecting the topcase/keyboard entirely, and jumping the machine's power via the power-on pads on the board. I've seen electronics in faulty topcases (usually in A1181s) cause a machine to "stick" in odd video and sleep related modes, so it would be useful to rule that out.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (screen, inverter, inverter cable, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be stuck in an "external monitor mode" of some type. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Lastly, I would try disconnecting the topcase/keyboard entirely, and jumping the machine's power via the power-on pads on the board. I've seen electronics in faulty topcases (usually in A1181s) cause a machine to "stick" in odd video and sleep related modes, so it would be useful to rule that out.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (screen, inverter, inverter cable, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be stuck in an "external monitor mode", etcmode" of some type. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be stuck in an "external monitor mode", etcmode" of some type. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverterscreen, inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverterscreen, inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark, yet working on an external displaydark.
It's odd that the screen would be completely dark, yet working on an external displaydark.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark, yet working on an external display.
It's odd that the screen would be completely dark, yet working on an external display.
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen. I don't think it's a bad cable, because effectively neither cable is seeming to work, and it would be unusual that both were bad, so that points to it probably being another issue.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark, yet working on an external display. If you shine a flashlight through the Apple symbol, are you sure you don't see a faint image?
It's odd that the screen would be completely dark, yet working on an external display. If you shine a flashlight through the Apple symbol, are you sure you don't see a faint image?
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).
 
Beyond that, it might be a completely dead screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen.
 
Good luck, and let us know if you make progress!

状态:

open

编辑: rdklinc ,

文本:

It's odd that the screen would be completely dark, yet working on an external display. If you shine a flashlight through the Apple symbol, are you sure you don't see a faint image?
 
There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image. If the inverter system (inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system. If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.
 
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).

Beyond that, it might be a completely dead
screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen.
The fact that you see neither is a little odd, and suggests this isn't a typical problem. External video works, so you know you don't have a bad video chip. It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc. I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen. If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen (I know you didn't see if there before, but I'm wondering if the PRAM reset might "jolt" it back into existence).

Beyond that, it might be a completely dead
screen. It's rare a screen would be so dead that it would neither display light nor an image, but it could happen.
 
Good luck, and let us know if you make progress!

状态:

open

原帖由: rdklinc ,

文本:

It's odd that the screen would be completely dark, yet working on an external display.  If you shine a flashlight through the Apple symbol, are you sure you don't see a faint image?

There are two components to the display -- the inverter system, which provides the light, and the video system, which provides the image.  If the inverter system (inverter, inverter cable, screen, board) is flawed, you should still see a faint image courtesy of the video system.  If the video system (screen, video cable, board) is out, you would generally see an odd bluish/greyish light with no image, courtesy of the inverter system.

The fact that you see neither is a little odd, and suggests this isn't a typical problem.  External video works, so you know you don't have a bad video chip.  It's a longshot, but I'm wondering if your machine might be in "external monitor mode", etc.  I would reset the PRAM, because if this is the case, it should set it back to the default mode, which should be to display video on the internal screen.  If that doesn't work, you might want to go to System Preferences/Displays and see if it shows a means of switching back to the internal screen.

Good luck, and let us know if you make progress!

状态:

open