Must unplug/replug monitor to work

As I previously posted, Apple replaced my AC Adapter and everything works perfectly once again. I have been using it without any issue for about a week now. As most of you have wondered, the real question is how long will it be before it burns out again? Based on several posts, I have decided not to plug in either the USB or Firewire cables.

Get your adapters replaced and keep reporting the problem!

I had to send my entire display back to Apple (at their expense) to get my AC adapter replaced. It took a total of about 2 weeks including shipping. They will replace it under warranty, I too wish they would have just sent me a new adapter without all the hassle.

Here's my latest:

I had gotten used to the method of turning the display off before I shut down the computer and on again after the computer restarted. But a couple days ago when I went to install a second internal drive, I noticed that one of the capacitors on the graphics card was barely attached - the solder on one of the legs had broken. Now this is a refurbished G5 from Apple and luckily still under warranty, so I brought the system into the Genius Bar at my local store.

I also decided to take the display in just in case, although I thought maybe the card was causing the display issues. They were surprised to see the state of the card and were happy to swap it for a new one (not in stock of course). I explained to them the problems I was having with the monitor and they too thought it could be due to the card. But they hooked it up to a store computer and it still wouldn't work.

One of the guys had seen the symptoms before - he said it was a bad inverter card in the display itself. So off the display went to Kentucky for repairs (and hopefully thorough testing). I hope that is the problem, and it would certainly explain the various issues I had experienced. It also may explain what's going on with the rest of your systems.

The question I still have is whether it is related to the graphics card. I may never know, but at least I'll have a "new" system to work from.

see my message (#16) - I wonder if the power adapter is being cooked due to a bad inverter card, or vice versa??

I guess I'll find out if mine goes bad again (the inverter), since I don't think I'm getting a new AC adapter...

By keeping the adaptor unplugged while not-in-use, and connecting once the system has booted, I have managed to get a reliable(?) display. I have a new adaptor being delivered tomorrow, and while I have them both I will swap back and forth to confirm whether the problem lies with the adaptor. Next question will be whether the display is 'causing' the adaptors to fail. But . . . one step at a time. Will keep you all posted.

Followup from yesterday:

Just received new adaptor & retained old one for testing.

It IS the white brick! Swapping between the 'old' and the new confirms it. Display will now start/restart, wake up from sleep - all the things it used to do.
Will let forum know if problem returns. Good luck!

Hi again,

Just plugged a new brick. Guess what? Everythings ace again. Do ask your local supplier for a new one and enjoy again. For how I do not know but at least it works. Go for it kids...

I'll report back soon hopefully confirming aok.

Mitch

OK, here's the latest in my ongoing saga. I received my system back from repairs - a new graphics card in the G5, and a reassurance that my display power adapter was working. The inverter card checked out OK as well, so the issues of the display not properly turning on/off were attributed to the graphics card (loose capacitor).

Everything worked fine... for a day, then back to it's old tricks. After struggling with just trying to get the thing turned on, I stumbled across a couple of interesting things. First, if I boot into open firmware mode, the display turned on. If I then did a "mac-boot" from OF mode, sometimes it would work, sometimes not (OK, I only tried a couple times - once it was on, I didn't want to mess around too much - too much to do).

Then, I was having less success with that method (it's a bit tricky to make sure the right commands are being typed when you can't see the screen). I proceeded to disconnect and reconnect the various cables between the computer and display. When I swapped the USB cables around (display and keyboard), the display came back to life. So I then decided to check the system logs. Lo and behold, there appears to be something indeed going on. What I can't tell is what it all means.

Here is the system log:

system.log:

Description: System events log
Size: 4.34 MB
Last Modified: 9/6/05 6:16 PM
Location: /var/log/system.log
Recent Contents: ...
Sep 6 18:13:10 Gregs-Computer kernel[0]: FireWire (OHCI) TI ID 8025 PCI: handleSelfIDInt - received quads == 0. issuing bus reset
Sep 6 18:13:10 Gregs-Computer kernel[0]: USB caused wake event (EHCI)
Sep 6 18:13:10 Gregs-Computer kernel[0]: FireWire (OHCI) Apple ID 42 built-in: handleSelfIDInt - received quads == 0. issuing bus reset
Sep 6 18:13:11 Gregs-Computer kernel[0]: USBF: 73. 61 AppleUSBHubPort: Port 1 of Hub at 0xUS4b100000 reported error 0xBF:e00002ed while doing setting port power
Sep 6 18:13:11 Gregs-Computer kernel[0]: 73. 61 AppleUSBHubPort: Port 2 of Hub at 0xUSBF: 4b100000 reported error 0x73.e00002eb while doing setting port power
Sep 6 18:13:11 Gregs-Computer kernel[0]: 62 AppleUSBHubPort: Port 3 of Hub at 0x4b100000 reported error 0xe00002eb while doing setting port power
Sep 6 18:13:11 Gregs-Computer kernel[0]: UniNEnet::monitorLinkStatus - Link is up at 100 Mbps - Full Duplex
Sep 6 18:13:11 Gregs-Computer configd[33]: posting notification com.apple.system.config.network_change
Sep 6 18:13:13 Gregs-Computer mDNSResponder: Repeated transitions for interface lo0 (127.0.0.1); delaying packets by 5 seconds
Sep 6 18:13:13 Gregs-Computer mDNSResponder: Repeated transitions for interface en0 (FE80:0000:0000:0000:020D:93FF:FE6F:F472); delaying packets by 5 seconds
Sep 6 18:13:16 Gregs-Computer mDNSResponder: Repeated transitions for interface en0 (192.168.0.2); delaying packets by 5 seconds
Sep 6 18:13:17 Gregs-Computer configd[33]: posting notification com.apple.system.config.network_change
Sep 6 18:13:17 Gregs-Computer lookupd[193]: lookupd (version 365) starting - Tue Sep 6 18:13:17 2005
Sep 6 18:13:17 Gregs-Computer /usr/sbin/AppleFileServer: TIME-CHECK: NSLXStandardDeregisterService took 5.733630 seconds!

Sep 6 18:13:21 Gregs-Computer kernel[0]: USBF: 83.824 AppleUSBHubPort: Port 3 of Hub at 0x4b100000 reported error 0xe00002ed while doing getting port status (2)
Sep 6 18:13:21 Gregs-Computer kernel[0]: USBF: 83.853 AppleUSBHubPort: Port 1 of Hub at 0x4b100000 reported error 0xe00002ed while doing getting port status (5)
Sep 6 18:13:24 Gregs-Computer kernel[0]: USBF: 86.570 AppleUSBHubPort: Port 3 of Hub at 0x4b100000 reported error 0xe00002ed while doing getting port status (3)
Sep 6 18:13:24 Gregs-Computer kernel[0]: USBF: 86.669 AppleUSBHubPort: Port 1 of Hub at 0x4b100000 reported error 0xe00002ed while doing getting port status (5)
Sep 6 18:13:33 Gregs-Computer kernel[0]: USBF: 94.861 AppleUSBHubPort: Port 1 of Hub at 0x4b100000 reported error 0xe

Sep 6 18:13:33 Gregs-Computer kernel[0]: USBF: 94.861 AppleUSBHubPort: Port 1 of Hub at 0x4b100000 reported error 0xe00002ed while doing getting port status (5)
Sep 6 18:14:01 Gregs-Computer kernel[0]: System Sleep
Sep 6 18:14:01 Gregs-Computer kernel[0]: System Wake
Sep 6 18:14:01 Gregs-Computer kernel[0]: Wake event 0800
Sep 6 18:14:01 Gregs-Computer kernel[0]: FireWire (OHCI) TI ID 8025 PCI: handleSelfIDInt - received quads == 0. issuing bus reset
Sep 6 18:14:01 Gregs-Computer kernel[0]: FireWire (OHCI) Apple ID 42 built-in: handleSelfIDInt - received quads == 0. issuing bus reset
Sep 6 18:14:03 Gregs-Computer kernel[0]: UniNEnet::monitorLinkStatus - Link is up at 100 Mbps - Full Duplex
Sep 6 18:14:07 Gregs-Computer mDNSResponder: Repeated transitions for interface lo0 (127.0.0.1); delaying packets by 5 seconds
Sep 6 18:14:07 Gregs-Computer mDNSResponder: Repeated transitions for interface en0 (FE80:0000:0000:0000:020D:93FF:FE6F:F472); delaying packets by 5 seconds
Sep 6 18:14:07 Gregs-Computer configd[33]: posting notification com.apple.system.config.network_change
Sep 6 18:14:10 Gregs-Computer configd[33]: posting notification com.apple.system.config.network_change
Sep 6 18:14:10 Gregs-Computer lookupd[200]: lookupd (version 365) starting - Tue Sep 6 18:14:10 2005
Sep 6 18:14:12 Gregs-Computer mDNSResponder: Repeated transitions for interface en0 (192.168.0.2); delaying packets by 5 seconds
Sep 6 18:14:46 Gregs-Computer kernel[0]: USBF: 154.809 [0x37dba00] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying.
Sep 6 18:14:46 Gregs-Computer kernel[0]: USBF: 154.809 [0x37dba00] The IOUSBFamily was not able to enumerate a device.
Sep 6 18:16:24 Gregs-Computer kernel[0]: CSRHIDTransitionDriver::probe
Sep 6 18:16:24 Gregs-Computer kernel[0]: CSRHIDTransitionDriver::start before command
Sep 6 18:16:25 Gregs-Computer kernel[0]: USBF: 254. 15 IOUSBCompositeDevice[0x3e5b100]::GetFullConfigurationDescriptor - Error (e000404f) getting first 9 bytes of config descriptor
Sep 6 18:16:25 Gregs-Computer kernel[0]: CSRHIDTransitionDriver::stop
Sep 6 18:16:25 Gregs-Computer kernel[0]: [HCIController][start]
Sep 6 18:16:26 Gregs-Computer kernel[0]: [AppleUSBHCIController][StopIsochPipeRead] - mInt1IsochInPipe = 0 - numReadsPending = 0
Sep 6 18:16:26 Gregs-Computer kernel[0]: [start] 1
Sep 6 18:16:26 Gregs-Computer kernel[0]: [HCIController][setupHardware] AFH Is Supported

Any help in deciphering what it means would be greatly appreciated. I can't afford the time to be without my system for another week for a while, so I'd love to solve this without returning to the store.

Thanks.

I too have suddenly experienced the same problems others have mentioned regarding their 23" Cinema Displays. Last week I turned on my G5 and my 23" would not turn on while my 20" was fine. The LED on the 23" flickered a bit but never turned on completely. I took it to the Apple store last Friday to set up a repair and they decided to send to whole unit, not just the power adapter, to the service center. Now a week later the cinema display was shipped back to my door with a new power adapter as others have mentioned is the problem. Perhaps Apple's quick service is an indication that they are becoming aware of a bad batch of power adapters that have gone out with the newer 23" displays. Regardless of the defects, I have to give Apple's service much credit for such a swift repair and timely return of the monitor. Thanks Apple.

I'm getting my third replacement power brick tomorrow. My first powerbrick failed 30 days after purchase (October 2004) and now this one has failed as well.

I really, really hope Apple has found a new power brick supplier cause' this is getting mighty frustrating.

I was lead to this forum after posting that my monitor would not work when turning on my G5. I will try to unplug and re-plug and see if that works. A new power brick has been ordered. Thanks for everyone's help. I will let you know if this solves the problem.

I am also in process of getting replacement, but I would love to know what sets some of these off, but apparently not others. Do you have your firewire connected via the adapter lead? Previous posts suggested that the proximity of this to the other cables may be the source of the problem.

I tried unplugging and plugging in the AC and DC cords to the power adapter without any success. Can I still assume that the reason the display does not turn on is because of a faulty adapter?

I received the new power adapter and the monitor now works. If auto manufactures can issue recalls why not Apple.