Fix Your Stuff Community Store

Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

433 Questions View all

Options

Bought power supply off Ebay

Hi

i bought a imac that didnt boot so i decided i would buy a new power supply, today i set to fitting it, going well but i got to the connecting power and noticed blue and brown wires in on the connector are dont connect to the same color.

Also, just to add the plug is plugged in right as per tab!!

Update (10/30/2019)

Hi dan.

its the bottom power supply, the darker colour one. I’ll try and do are better picture.

regards dave

Block Image

hope this is a larger picture.

Answered! View the answer I have this problem too

Is this a good question?

Yes No
Score 0
Add a comment

3 Answers

Filter by:
Most Helpful Newest Oldest
Chosen Solution

Options

Block Image

Block Image

Look at the connector. There is a push tab release on the connector and it should only fit one way onto the plug in. Wire colors may vary, mine are all black.

Was this answer helpful?

Yes No
Score 1

3 Comments:

@mayer - I don't remember seeing anything but black wires. This unit appears to have the two wires within a heat shrunk tubing Vs discreet like what we have seen.

by

@danj Looks to me like he is holding the wires that goes to the logic board and not the power supply wire.

by

@mayer - Look carefully and you can see the Brown wire mates up with the Blue wire from the other side and the Blue wire mates with the Brown! This is the AC connection from the power supply.

Which I think is the issue at hand. One would assume Blue to Blue and Brown to Brown which is what alerted him something looked off.

by

Add a comment

Options

@dosman something does not look right on your connector. Post a picture that is less distorted. You do want to stick with Blue/Blue Brown/Brown until proven otherwise

Block Image

Block Image

Was this answer helpful?

Yes No
Score 1
Add a comment

Options

Can you point to the wires you have a question on from one of the power supplies here:

Block Image

Block Image

Your image is to small to see.

Was this answer helpful?

Yes No
Score 0

3 Comments:

@dosman - Lets do this: Take a ohm/continuity meter measuring the lines from your original power supply from the logic board to the connector. Don't look at the colors look as the pathway. So the left pin is connected to the same place on both power supplies? Then the color of the wires is not important!

This is important as you don't want to alter the polarized connection. This gets into which side is the common and hot. If the case is ground then you could introduce a hot ground issue in this case the metal case could be hot!

So you do want to make sure this is correctly wired. You may want to speak to the seller as well.

by

Hi dan.

I’ve tried to follow your advice above but still am struggling to determine the correct wiring. Sorry but I’m very new to fault finding.

by

OK, lets first index the connector:

With the cable connected mark the left side as you are holding the connection in the picture (Blue wire on left from the top side).

Carry that mark to the other side so both connectors carry the mark.

Now disconnect the cable and plug in the other power supply. As this connector is not marked mark it so the same side carries the mark.

With both power supplies on your bench, place your meters probe into the connector hitting the left marked contact. Now take the other probe touching the logic board surfaces where the wires are soldered take a marker marking the logic board where your meter showed continuity with your other probe the other wire should show no connection. Do that with the other power supply.

Now take a picture of the logic board of each power supply showing us what this point is posting both pics here so we can see.

by

Add a comment

Add your answer

Dave Clark will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 1

All Time: 81