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Текущая версия: originalmachead and oldturkey03 (подробности голоса) ,

Название:

Completely black screen and no sound?

Текст:

So I have been fighting with this Mac for about 2 weeks now.  The symptoms are a completely black screen, as in no video whatsoever (fairly sure it isn't an inverter problem at this point)and also there is no chime sound to indicate the system coming up.

I thought the problem was originally bad caps (3 total replaced), same problem.  I opened the power supply and determined there were also bad caps on it, so the power supply was replaced with no help to the problem either.  I read that the heatgun reflow trick works for the black screen, tried that and it hasn't helped either!  The power button on the Mac lights up but still nothing for sound and display!

The strangest thing about this is that I can hear HDD activity and the first 3 LED's are lit once the machine is powered.

What else can I try to do to fix this problem short of replacing the board?  Just for a heads up, I do not have access to an adapter to test against another monitor.  I am totally out of ideas at this point.

Устройство:

iMac G5 17" Model A1058

Статус:

open

Принятый ответ:

+51824

Оригинальный сообщение: jluther ,

Название:

Completely black screen and no sound?

Текст:

So I have been fighting with this Mac for about 2 weeks now.  The symptoms are a completely black screen, as in no video whatsoever (fairly sure it isn't an inverter problem at this point)and also there is no chime sound to indicate the system coming up.

I thought the problem was originally bad caps (3 total replaced), same problem.  I opened the power supply and determined there were also bad caps on it, so the power supply was replaced with no help to the problem either.  I read that the heatgun reflow trick works for the black screen, tried that and it hasn't helped either!  The power button on the Mac lights up but still nothing for sound and display!

The strangest thing about this is that I can hear HDD activity and the first 3 LED's are lit once the machine is powered.

What else can I try to do to fix this problem short of replacing the board?  Just for a heads up, I do not have access to an adapter to test against another monitor.  I am totally out of ideas at this point.

Устройство:

iMac G5 17" Model A1058

Статус:

open