I bought a Wallstreet today that had the power connector broken off. I pulled out the DC/Audio board and put on a new connector. This is not the weird Apple connector but a standard barrel connector.
I also did not get a power supply with it. I am trying to test using a 2A 20VDC power supply. The system requires 24VDC but I was hopping that 20VDC would be enough to get it to do something for a few seconds at least. But no dice.
I am starting to think that there is a problem in the board somewhere. Of the 5 solder pads near where the connector goes 4 of those goes to ground. The 5th one is the middle one on the back row. I looked up some pictures of the board and looks like that is where positive should go. I am unable to trace it to anywhere else on the board and when I hook up power I can not get a reading anywhere.
Before putting too much time into this I wanted an idea if it worked. I found out that the battery out puts 14.4V. I took a 13.5VDC wall wart that goes to about 15VDC when unloaded. I hooked the wires to the positive and negative terminals on the battery connector. I turn it on and it turns on for about 3 seconds and powers off. I figure this is for two reasons. One the voltage goes to low and the PMU is unable to communicate with the battery.
Is that a good guess or does the machine have other problems?
I am leaning toward it being a problem with DC/Audio board. When I was pulling it out I caught a slight smell of smoke and it seems to be from behind the audio connectors. Though I have horrible since of smell so who knows if that means any thing.