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DELL JWPHF HOW TO UNLOCK

tapasloveu
(@tapasloveu)
Trusted Member Customer

DELL JWPHF HOW TO UNLOCK

DELL  JWPHF  1
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Topic starter Posted : 25/07/2021 8:15 pm
tapasloveu
(@tapasloveu)
Trusted Member Customer

BATTERY INFORMATION

DELL  JWPHF 2
DELL JWPHF

 

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Topic starter Posted : 25/07/2021 8:18 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

The date, cycles and fcc already reset.

Which chip have you selected to achieve it?

 

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Posted : 25/07/2021 8:55 pm
tapasloveu
(@tapasloveu)
Trusted Member Customer

@djibattworkshop 

it bq8050 , their is no opption to unseal

This post was modified 2 months ago by tapasloveu
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Topic starter Posted : 25/07/2021 9:19 pm
torture
(@torture)
Member Moderator

So the chip is not detected by NLBA database and your wiring is ok. This battery model comes with many different chip models SN803XX, BQ208XX, BQ8050, BQ8030

But since the manufacturer is Sanyo the chip can only be BQ8050 or BQ8030.

You have succesfully chaged the DATE, FCC, and Cycle Count using the BQ8050 menu, but did you press the CLEAR CHIP ERRORS button?

Also many SANYO firmwares are checking the fuse condition during startup so if it's blown PF will not be cleared, so check the fuse too.

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Posted : 25/07/2021 9:21 pm
tapasloveu
(@tapasloveu)
Trusted Member Customer

@torture

fuse is ok and had clean chip error 

,it's unlock for few second ,after than again lock

 

 

 

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Topic starter Posted : 25/07/2021 9:24 pm
torture
(@torture)
Member Moderator

Can you please read & save the EEPROM and post it here.

Also this battery has 5 led's at the bottom side, what do they indicate when you press the button? If the chip is locked led 1,3,5 should be blinking.

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Posted : 25/07/2021 10:07 pm
DjiBattWorkshop
(@djibattworkshop)
Member Moderator
Posted by: @tapasloveu

,it's unlock for few second ,after than again lock

Typical for blown fuse or damaged fuse control FET.

 

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Posted : 25/07/2021 10:54 pm
Hardey liked
tapasloveu
(@tapasloveu)
Trusted Member Customer

@torture

 only led 1 is blinking , when i press it only

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Topic starter Posted : 26/07/2021 5:47 am
torture
(@torture)
Member Moderator

Your dump is UNLOCKED and working fine! 

Double check the fuse first like it was proposed above. Remove the black cap and make a photo so we can see it.

Untitled

 

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Posted : 26/07/2021 6:16 am
DjiBattWorkshop
(@djibattworkshop)
Member Moderator

Also try to locate Fuse Control MOSFET and make voltage measurements on Gate, Drain and Source pins.

 

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Posted : 26/07/2021 8:05 am
tapasloveu
(@tapasloveu)
Trusted Member Customer

I will try and update 

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Topic starter Posted : 27/07/2021 11:00 pm
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