Quote from: J4bberwock on September 14, 2014, 08:47:19 PM

The AFBxx and FBxx are ferrite beads. worst case, you can replace them with zero ohm resistors.
I bought 2 failed blades with the same trouble and managed to get them back to life.
The best way to solder themthose parts is with an hot air station.
I posted a few pages ago a step by step guide to check what is failed on a blade.
Follow it, and post your results.
Obviously, you will need to replace the FB before testiong the usb part of the board.
You may also have to replace AME8805 chip.
If so, they are selling either on utsource or ebay for cheap, and I also have a few ones I can send for the price I paid them from utsource + shipping from France.

Worst thing that could have happened is the STM32 chip fried since we don't have the firmware for it.
I'll try to extract it, but not sure when.

when the STM32 chip is fried, you will get low voltage at the output of the AME8805 instead of 3.3v, and the capacitors next to the crystal will read either zero or infinite when using the ohm-meter. I can't remember which value it was.
Soldering the STM32 is not easy at all, i took me some time to get all pins correctly aligned.

If you got no reply within 2 days, just PM me, I'm quite busy at the moment.

And when/if you revive the blade, just lower the resistor from 43k to 39k, the extra power draw isn't worth it anymore.

Thanks for your reply J4bberwock. Ill look at the guide when I have a moment. I unscrewed the Blade and have inspected the pcb's. Photss are below:

http://i59.tinypic.com/mwctbl.jpg

http://i57.tinypic.com/vzfo13.jpg

From looking at the pcb ls with a magnifying glass I can't see any other damaged components other than the ferrite bead at AFB26. Can anyone confirm from the pics if that appears to be the case? If so can someone provide me with the part number of the replacement or the 0ohm replacement as mentioned earlier. Also can I have part numbers for the 220f 35v cap and 39k resistor to mod other blades

Also any other recommended changes? More heatsinks, power connector mod, etc? Im using a 750w enermax psu and 18awg cables it has a cheap connector however, one of which melted so any recommendation on the plug to replace? Also is it worth changing the barrel socket to a better rather than screw terminals or directly soldering, etc?

harpss1ngh

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