iMac G5 capacitor repairs - via Macintouch

I recently reworked our home network, and our almost- 5 yo G5 iMac is doing quite a nice job as the (yech) Parental Controlled homework/learning workstation. The transition has been educational for me as well, my kids taught me that educational videos will play quite well if one is careful to close CPU-sucking pages running (ugh) Flash animations.

During the transition I had to reset the SMU to deal with one of many causes of the G5 non-stop fan problem (CPU sure was cool though - 60 C). I also popped the case to blow massive amount of dust off the fan and vent. I love the user-serviceable plastic case design; it was a high point of Apple customer-friendliness.

When I popped the case I checked the capacitors. In one of the many sordid bits of Apple hardware history they shipped a bazillion iMacs with flawed capacitors. Many of those failed under warranty, but Macintouch tells us they continue to die over time. A lot of iMac buyers lost some loot there. (I wonder if the iMac's original fan/heat problems contributed to this.)

I just checked mine and I didn't see any bulging, but it's worth noting that there's now a small G5 iMac capacitor repair/replacement industry ...

Macintouch - iMac G5

... Late last year one of the other guys at work started repairing iMacs on the side, replacing the swollen caps. He gave me a full set (since I had given him the idea in the first place when mine failed, I think) and said "give it a try" with a few pointers. I replaced all the caps over a weekend and now I have a fully functional iMac G5 in my workshop to replace the 8500 and 7300 that were there... Check around locally for smaller tech shops. In South East Wisconsin, MacCetera does the repair for a flat rate of $200 + tax, including parts.

... My iMac G5 suffered a swollen-capacitor death two years ago. Once they were replaced it has been running smoothly 24/7 as a database/Web server and Skype phone.

... The owner of www.badcaps.net performs motherboard capacitor replacements on G5s. It'll run you less than $75 for a premium capacitor rework.It's worth checking out the site if you're considering getting a 3rd party to perform this repair. They also have a knowledgeable tech forum that has discussed many G5 hardware issues.

See also*:

• iMac G5 fan noise: another cause (before Apple's software fix worked)
• iMac G5: fans running more often
• Bad fan design is the bane of the iMac G5 and Silencing the G5 whine: I think this was fixed by my version - iMac G5 rev 2: a lot cooler?
• Fix for 10.4.3 fan problems: unplug and restart and resetting the SMU (PMU?)
• iMac heating problems and the curse of the Canon printer driver and (one of my most popular posts) My MacBook fan was roaring. Why? - evil OS X drivers.

* When I do these reviews of old posts, it strikes me that before the wonders of Google Custom Search I tended to discover and forget things -- and I was younger then!

Update 12/18/2011: "Cordwainer" (Karen Cotton) has written an extensive comment on the story of the capacitor failure. Worth a read. I still use that G5, and the capacitors still work.

Parental Controls - Remote Access and other tips

I've just had another go at configuring OS X "Parental Controls". I'm doing this in 10.5, but I don't think 10.6 is much better.

I sometimes wonder why OS X "Parental Controls" are so buggy, awkward, limited, and altogether miserable. They weren't so bad in MacOS 10.9 -- before Jobs returned.

I think that's the clue. I didn't used to think so, but I've come to believe that Apple is Jobs. Evidently Jobs, a notoriously rebellious teenager, believes Parental Controls are a bad idea. So he's sabotaged them.

From the latest ordeal I've three new tips:

1. On editing content - site lists

• In Safari with 10.5 it seems as though, when logged it as a managed user, you can open bookmarks (requires admin pw) and drag and drop links to the Safari Bookmark list to your hearts content. A very efficient way, one might think, to add approved sites. Except it's misleading. When you quit Safari and resume you're back to the set you approved in the Parental Controls Preference Pane. So ...
• There are only two ways to add web sites to the approved list. You can add then in the Parental Controls Preference Pane, or in the managed account, you can add them one at a time, each requiring an Admin password, to the Bookmarks Bar.
• You can drag and drop links and Location bar URLs to the Parental Controls Preference Pane and you can drag and drop to reorganize there. This is a big time saver. I guess someone slipped that one by Jobs.

2. remote monitoring and control from another computer

It's barely noted anywhere, but you can do remote monitoring and control from another computer. This is from the 10.5 Help file:

From OS X Help for 10.5:

If you have a computer on your local network that is managed by parental controls, you can change the settings in the Parental Controls preferences and monitor the user activity remotely.

The trick is to enable remote management in the gear drop down. Look hard, it's below the list of users.

Then, from your remote machine:

In the Finder, choose Go > Connect To Server, and then click Browse.

Select the other computer in from the list of computers on your network and enter the administrator name and password for the remote computer.

In the Finder, choose Apple menu > System Preferences, and click Parental Controls...

... In the Accounts list, in the Other Computers section, select the remote user account you want to change.

Enter the administrator name and password of the remote computer.

3. Adding sites - only the domain matters

I thought I could get finer grained control by adding links to subsites (ex. www.google.com/mail), but that doesn't work. Only the domain seems to matter (though I'm not totally sure about this).

See also:

• Gordon's Tech: Parental Controls - The wikipedia problem solved
• Gordon's Notes: Parental controls - not an Apple thing (2007 - 10.4)
• OS X parental controls logs still broken in 10.5.7
• Can't select Jabber or Google Talk for iChat? Parental Controls conflict
• Gordon's Notes: The software Apple can't do (2009)
• LEGO Digital Designer conflicts with Parental Controls

Update 5/15/10: If this is true, I can't blame Apple's parental control failures on Steve Jobs disinterest.

YouTube: The HTML5 Flash-Free announcement

The official announcement: YouTube Blog: Introducing YouTube HTML5 Supported Videos.

Flash is miserable on OS X, especially on G5 machines. It's not much better on Windows and, of course, it doesn't work on the iPhone. Adobe's incompetence has earned them a lot of geek loathing.

To use this beta you must be logged in to YouTube and opt in to the trial (this page also lets you opt out). If you're using a supported browser (Chrome, Safari) you get H.264 HTML 5 video rather than Flash. You can't do full screen and videos with ads, etc will still be served via Flash.

I'll report back on my own experiences.

Fixing the Time Machine / Time Capsule 10.5 "Backup volume could not be mounted" bug

After some network revisions and machine migrations It was time to clear out some Time Capsule backups. Alas, there's no documentation on how one can do this. Even the excellent Take Control of OS X Backups eBook has no advice on removal of an entire machine backup. [Update: Joe Kissell, the author, responded almost instantly to an email. I've updated my post on freeing up TC storage with his response (that post also summarizes TC documentation).]

The best advice I could find is to erase the Time Capsule disk. I have other backups, so I went ahead. That part went well.

My 10.6 machine resumed its Time Machine backups with no problems. My 10.5 machines, however, complained that the "Backup volume could not be mounted".

Turns out this is a known 10.5 bug -- an unfixed10.5.3 bug.

• Mac OS X 10.5.3 or later: Time Machine - "Backup volume could not be mounted" after changing network volume's password
• Time Capsule: Time Machine backups do not mount
• Mac OS X 10.5: Time Machine - "The backup volume could not be found" alert

I had success with

• Open Time Machine preferences
• Click "Select Disk"
• Reselect the Time Capsule disk.

I was then asked to enter a user name and password -- but dialog showed only a password (bug). I think user name in this context is really the machine name. I'd enabled guest access so I clicked "guest" and the backup resumed.

Note that since Apple fixed this in 10.6 but not 10.5, it's an example of a bug that can drive new machine purchases (older machines can't run 10.6). Bundling backup with the OS wipes out the alternatives, and since backup is essential unfixed bugs can be very profitable for Apple. This one, at least, is relatively easy to work around.

See also:

• Time Machine: Fail first, then flaw discovered - a more obscure bug in 10.6
• Freeing up Time Capsule space – and documentation for Time Machine and Time Capsule
• Time Machine: Troubleshooting backup issues

iPhone text message chiming in silent mode

Midway through my UMN lecture on computerized physician order entry my 3G iPhone started pinging. My 12 yo was texting me.

Thing was, the phone was in silent mode (red dot on the ring/silent switch). It's not supposed to chime. It wasn't ringing when I tested however, so I knew the switch was working.

I shut down and restarted the phone and changed the text message sound. Of course power cycling makes sense, but the I had a reason to change the text message sound too. That comes from my OS X experience; sometimes changing settings will fix a corruption problem.

That worked. The phone no longer chimes when in silent mode.

VMWare Fusion 3: Migration, PowerPoint and Shrink Disk

I've used VMWare 2 with Windows 2000 and Office 2003 on my MacBook for almost a year. I hardly ever use it, but it's compact and fast.

I wasn't sure I'd bother installing VMWare on my i5 iMac, but then I discovered how lousy PowerPoint 2008 really is (an especially bitter discovery since my first impressions were very positive).

So I downloaded the 30 day trial version of VMWare 3, installed VMWare Converter on my creaky XP box, and created an XP image on my iMac including Office 2003. I'm pleased to report that PowerPoint 2003/Win in the Fusion VM is at least ten times faster than PowerPoint 2008 for OS X.

Here are some discoveries of note:

• VMWare on the iMac had trouble connecting to VMWare Converter. I had to restart the XP box to make it work. I think a pending install created a problem.
• The conversion took an hour or two.
• On VM startup it looked at first that only one account had been created -- the XP box had had 3 accounts. I restarted the VM and it showed all 3.
• I couldn't get VMWare Tools to install. I had to login and connect to the share then run setup. This took a couple of tries I think, and a restart or two. It wasn't as smooth as VMWare 2, but my previous efforts didn't involve migration.
• I had to re-authenticate the VM XP box with Microsoft. That took a few minutes. I'm still running the old box so I unplug the network cable when the VM is running. I'll be putting the old box out to pasture soon. (It's amazing how silent the office is when only the iMac is running.)
• The VM migration created about 50 2.5 GB files in an OS X Package (executable folder). This can be changed in settings. It's done to get around FAT max file sizes; I wonder if it might help with backup. (If you create a 100GB single file VM, each time you open it you'll create a 100GB file that needs backup.)
• I didn't remember than I had two drives in the XP box. The VM had both drives; one held an old redundant backup. I deleted that drive (Settings:Hard Disks) but the VM didn't shrink. I used the "Clean Up Disk" function and that shrank it to a nice 50GB.

See also:

• Experiment with VMWare -- for free
• Parallels to VMware - my experience (Win2K install)
• VMware academic discounts: Fusion and Windows Workstation
• Why I'm downloading Windows 7 RC tonight ... (It runs on my MacBook)
• VMWare Converter - turn your XP box into a VM platform
• How to fix permissions in an OS X Package and how deal with VMWare Fusion Insufficient Permission problems

Update 3/11/2010: It's been performing excruciatingly slowly. I haven't been able to find any explanation. Startup times of about 3-5 minutes, intermittent very slow operations. It behaves like it has no working memory.

Update 10/26/10: I finally get around to speeding it up.

I now have gDrive

Today my Google Docs shows the "Upload any file" link.

So I have the promised minimalist version of "gDrive". To get the good stuff though I'll have to upgrade our family domain and/or my personal Gmail account. That's not necessarily cheap at current prices.

You can't actually upload any file. Executables, including OS X apps. can't be uploaded.

Update 1/20/10: I found my first bug. I uploaded a PDF and viewed it. From the viewer I obtained the share link. The public link didn't work however. When I clicked "preview" it reported "Sorry, the page (or document) you have requested is not available."