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Old 02-25-2021, 03:42 AM   #15
WLA80
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WLA80 began at the beginning.
 
Posts: 19
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Join Date: Feb 2021
Device: Kindle Gen. 8
Quote:
Originally Posted by eddie.t.h View Post
Well, unfortunately this is probably the worst Kindle in terms of any repairs (apart from the newer Oasis, of course, which cannot even be opened).

The chip is BD71815AGW. The measuring resistor should be 30mOhm (0.03Ohm). Have you checked your device's serial port for any signs of life?
Hi again.
I believe the resistor being mentioned on Russian forum is the one with 030 designation, which should be 3 ohm I guess? While it's on the board it reads more or less short. I can try desoldering it and putting a 3 ohm in place of it.

At first I understood from Russian post that the 3ohm R must be soldered on empty patches, but that cannot be the case as those are direct linked to battery terminals.

I guess I can try to replace the 030 with a 3ohm if that's what the post meant.

As for the serial port, do you have a particular application / procedure on your mind? With no reaction to USB, I'd not expect much life on raw serial comm.
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