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hp fp09 no charge/discharge, BQ30695A

exwilliam
(@exwilliam)
Reputable Member Customer
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I reworked the fuse.

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Topic starter Posted : 26/09/2023 11:49 am
exwilliam
(@exwilliam)
Reputable Member Customer
image

manufacturer access 000

it locks just seconds after clearing the errors.

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Topic starter Posted : 26/09/2023 12:01 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @exwilliam

I reworked the fuse

 Paste a picture 

 

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Posted : 26/09/2023 12:33 pm
exwilliam
(@exwilliam)
Reputable Member Customer
IMG 20230926 154052 1
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Topic starter Posted : 26/09/2023 2:41 pm
torture
(@torture)
Member Moderator

Fuse is not properly restrored.

Check the fuse restoration tutorial.

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Posted : 26/09/2023 4:02 pm
exwilliam
(@exwilliam)
Reputable Member Customer
image

This time I even replaced the 3legs fuse with jump wire but, no changes. It locks again after seconds.

Manufacturer access 0000

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Topic starter Posted : 27/09/2023 10:47 am
torture
(@torture)
Member Moderator

Post updated photo of the fuse after restoration.

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Posted : 27/09/2023 11:35 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

There is misunderstanding of the issue.  Chip could not be unlocked untill fuse and its control circuitry are properly restored. It checks it each time after reset, if there is any issues chip locks repeatedly. 

On the picture above you put a jumper on all three legs of the fuse including control pin. It is violation of recovery method which could damage small fuse control mosfet. There is special attention in tutorial to take care of control pin what is ignored by many customers. 

 

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Posted : 27/09/2023 11:41 am
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