iBook G4 transformer overheating -- solution

Joined
Jun 9, 2008
Messages
8
Reaction score
0
Points
1
Greetings,

Just posting this in case it's of use to someone else. Recently the transformer for my iBook G4 (1.42GHz, running 10.4.11 -- yes, thank you, I know it's old :) ) cut out, because it had overheated. (Thank god for the cutout switch!!) It had not been charging the battery, simply feeding the machine from the mains. From memory I was using my email client -- hardly processor intensive.

I unplugged the transformer, and half an hour later it had cooled down sufficiently to test whether it still worked -- it did, whew. After searching here and elsewhere I decided to try resetting the PMU, just in case that helped. I suspected it might well, because the machine took a l-o-n-g time to recharge the battery after the half-hour cool-down period, and it had been asleep for that half hour! Also, the battery menuling couldn't seem to calculate how long it would take to recharge it.

So, later that day, with a nice cold transformer, I reset the PMU, and spent a nervous couple of hours checking the temperature -- it got hot, but nowhere near the temperature it had been when it cut out.

Several days later and it hasn't cut out again. Seems that the machine was simply drawing waaay too much current through the poor old transformer. :(

As I say, just in case this is of help to someone else.
 

pigoo3

Well-known member
Staff member
Admin
Joined
May 20, 2008
Messages
44,223
Reaction score
1,432
Points
113
Location
U.S.
Your Mac's Specs
2017 15" MBP, 16gig ram, 1TB SSD, OS 10.15
I'm assuming that what you're calling a "transformer"...is what Apple calls the "Power Adapter" (the thing that plugs into the wall).

Thanks for the tip...it's great when a DIY solution is successful without spending any money!:)

- Nick
 

Shop Amazon


Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
Top