What type of fuse is F7005 on the PP20V_DCIN rail? Fast-acting?
This fuse needs replacing; from the 820-3787-A schematic I see it should be "6AMP-32V-0.0095OHM" but I'm not sure which type/speed it should be.
I measured 20V on the input, about 8.7V on the output of the fuse, using a Magsafe cable directly connected to a bench power supply; no current draw. The computer was still turning on using the remaining battery voltage, only showing the 'please connect charger' image.
Disassembled from the board, it's difficult to measure any resistance of the fuse itself - I think I had a reading in the tens of kiloOhms at one point, usually just "OL". It certainly seems this fuse is blown.
This MBP has been used for years with a non-standard charger; the seller indicated this was the only way to power it. I recently replaced the battery; a few days later it wasn't charging anymore.
My plan now is to first replace this fuse and then see if I can get the onewire circuit working again; I have an OEM Apple 80W charger.
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