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I use mine in a small space and it stinks the place up when the contents are warmed up, even with the lid closed. Worth mentioning that I use ES132 instead of Branson. There's a window right by my cleaner, but the weather isn't always accomodating. Given that the smell is bad and its most likely...

Solder iron temp: between 320 Celcius to max, depending on how much heat-absorbing stuff is nearby, how large the component is and what type of tip I'm using. I'm afraid this is something you can't set and forget. You have to be careful with both hot air and the iron as overshooting your desired...

I tried a steamy hot ~85 degrees UC bath for 30 sec like you suggested in another post here somewhere, now it won't spin the fan anymore. I'm giving up on this one, looks like its a problem under the CPU and I cant fix that.

I'm curious what steps you guys take to test a repaired machine and how you guys do it. Myself, when a repair was an obvious fix like a missing component, damaged lvds connector or blown filter someplace, I'll check whatever wasn't working and if its fine, then I assume the rest of the machine...

Damn, this is just too much for me Paul. I was already planning to get a license sometime soon, but this is the final straw. Just last friday I was seaching random boardviews to find a part I didn't have on hand for an ipad repair. Ended up wasting a bunch of time looking for it, giving up and...

I've UC'd it again and put the original BIOS chip with original BIOS on it back on the board. Getting consistent full fan spin now. I'm guessing there must've been some corrosion under the CPU after all. CPU Vcore is now 1.7V, all other rails I was missing before (ALL_SYS_PWRGD) are back up. No...

Cancel that.. I just ran it through the UC, after that it got fan spin. Left it on for a while, switched it off and on again.. Now its just repeating short fan spins. Should I try heating it a little (to pre-reflow temp) first or UC it again?

Feel free to close this one. Cause found (CPU), no fix.

Thanks for the assistance in this thread guys. All in all I've tried three different bios files; two I found online and one from a donor board. Unless someone has one thats definitely worth a try I guess this is the end of the line. Learned something new, but not the most profitable of repairs...

but.. a few posts ago you said: Did my scope pics show something to make this board go from flashing a different BIOS to troubleshooting Vcore? Feeling bad that I dont know where to go from here again... I looked at where Vcore comes from.. U7310 and U7320. U7320 VCC and CPU_VR_FCCM both...

Found a working 820-2936B I had lying around. It had some issues (had moisture damage and runs very slowly), but it will boot up. The pins look different on this one: SPI_MLB_MISO I take it that in my 00165 board there is some type of handshake thing going on that isn't being replied to?

pin 2 SPI_MLB_IO1_MISO Are these normal measurements? I don't have an easily accessible functioning board here

All pins but GND are sitting at a steady 3.3V

After each swap I have done a few quick measurements to see if the situation looked the same as before. ALL_SYS_PWRG is still pulsing like before. I can go back and measure other rails, if thats important.

Now I've tried the following: original bios chip with two different clean ME bin's. A different bios chip off of a donor board with whatever bios was on there. All result in the same symptoms. Machine wont turn on and no pulse on CPU Vcore. Anything else I can do?

I flashed it with a clean ME bin I got off of badcaps, put it back on the board and am seeing no difference. All pins are properly connected, all except GND sitting at ~3.3V like before.

I've taken the U6100 off the board and read its contents. File can be downloaded here. I compared it to a clean ME 820-00165 bin I found online, it looks about the same, but there are differences. I dont know if I can tell whether something is messed up by looking at this. Not sure how to...

Alright, I guess this will be my first apple BIOS job. Time for some experimenting on donor boards.. will report back later..

Hi Speedy, I just requested access to your this file. Could you give me access? I might need the file.

8.5 Ohms on both L7310 and L7320