iMac g3 Bondi Blue Power Supply Help

OneMoreMacUser

macrumors member
Original poster
Dec 23, 2013
30
0
Central Ohio
I have just picked up an 1998 iMac rev. A and i have been looking to replace the power supply because:
1. It doesn't turn on (it used to)
2. the power supply makes a hissing noise when plugged in

I havent been able to find one under $85 and i was wondering if that was too much to pay for one. Would it be worth replacing it for that much? Does that model iMac have any value at all?

if someone could help me find a cheaper board that would also be appreciated!
P/N: 6870T139D11
 

OneMoreMacUser

macrumors member
Original poster
Dec 23, 2013
30
0
Central Ohio
I am afraid that wont work, i need the one with the
P/N: 6870T139D11 not 6870T139D10 :eek:
so close, but i don't think it will work
How much do these Rev. A bondi blue imacs go for (working)?
 

DeltaMac

macrumors G4
Jul 30, 2003
10,129
2,639
Delaware
The bondi blue iMac (the original) would take a version 1 power supply, so you are correct that the eBay is wrong. You can also look for Apple's part number 661-2081 - might help you find a replacement more easily.

PROBLEM is that I recall replacing both the power supply and the Analog/video modules quite a few times, as the power supply would often take the Analog/Video board with it. I would replace the power supply, but the failed analog board would cause the good power supply to fail immediately.
So, look forward to the possibility that a good power supply MIGHT not fix the problem, and you could end up blowing out a good power supply, when both boards may need replacing at the same time. IIRC, better reliability was one of the reasons for the v.2 boards.
Do verify by looking at the pictures that the v.2 is NOT your board. The connector plugs will be completely different positions, and the v2 has several connectors that the v1 does not have. If the plugs are in the same locations, then the v.2 is the correct one (despite some difference in the model number)
 

OneMoreMacUser

macrumors member
Original poster
Dec 23, 2013
30
0
Central Ohio
Thanks, that was extremely helpful, I was just wondering if I could get your comments on this regarding the power supply and the analog board.
The reasons I have sought to replace the power supply was because whenever the mac was plugged in the power supply (specifically) made a hissing noise. Not any other part, and when I would try to power the machine on, absolutely nothing would happen. So do you think it is a problem with both boards?
 

EllisComputerDude

macrumors newbie
May 14, 2017
1
0
I have just picked up an 1998 iMac rev. A and i have been looking to replace the power supply because:
1. It doesn't turn on (it used to)
2. the power supply makes a hissing noise when plugged in

I havent been able to find one under $85 and i was wondering if that was too much to pay for one. Would it be worth replacing it for that much? Does that model iMac have any value at all?

if someone could help me find a cheaper board that would also be appreciated!
P/N: 6870T139D11
[doublepost=1494783846][/doublepost]I have one!
 

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