Author Topic: JDM-040 missing components. Please, help  (Read 1422 times)

Offline HyperMax

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JDM-040 missing components. Please, help
« on: March 30, 2021, 08:00:30 AM »
Greetings! Tell me please, what are those components. It were destroyed by corrosion


Offline RDC

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Re: JDM-040 missing components. Please, help
« Reply #1 on: March 30, 2021, 09:11:45 PM »
Left to Right

120nF, 0201
56pF, 0201
33ohm, 0402
Screwing up is one of the best learning tools, so long as the only thing you're not learning is how to screw up.

Offline HyperMax

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Re: JDM-040 missing components. Please, help
« Reply #2 on: March 31, 2021, 10:17:42 AM »
Left to Right

120nF, 0201
56pF, 0201
33ohm, 0402

Big thanks to you! Can it be a reason of not recognized device via usb?

Offline RDC

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Re: JDM-040 missing components. Please, help
« Reply #3 on: March 31, 2021, 11:00:58 AM »
Doubt it. If the thing had enough corrosion damage to eat up those 3 components then there is more of it on there somewhere causing who knows what issues.
Screwing up is one of the best learning tools, so long as the only thing you're not learning is how to screw up.

Offline HyperMax

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Re: JDM-040 missing components. Please, help
« Reply #4 on: April 01, 2021, 12:20:21 AM »
Doubt it. If the thing had enough corrosion damage to eat up those 3 components then there is more of it on there somewhere causing who knows what issues.

I watched with microscope and all the rest looks fine. I will replace those and see what happen. Thank you again

Offline RDC

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Re: JDM-040 missing components. Please, help
« Reply #5 on: April 01, 2021, 06:23:01 AM »
Microscope can't see under that BGA chip.

Some other issues for no USB detection are the USB/LED board, flex cable contacts, the TVS array shorting or some issue with the Common Mode Choke on the USB data lines.
Screwing up is one of the best learning tools, so long as the only thing you're not learning is how to screw up.

Offline Tirath

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Re: JDM-040 missing components. Please, help
« Reply #6 on: August 22, 2023, 09:28:04 PM »
Hi, can someone please identify these components for me. I accidentally swipe those with my soldering iron and now controller no charging. Model is jdm 040.

Image is here

https://postimg.cc/Fd82zmrr

Offline RDC

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Re: JDM-040 missing components. Please, help
« Reply #7 on: August 24, 2023, 04:17:16 PM »
Both of those are just Capacitors. Them missing is in no way making the controller do that. It will work perfectly fine with them gone.
 
Check and make sure that the solder pads there are not shorted to each other causing a bridge where the Cap used to be. Also go over the board a few times, as knocking just those off of there would be incredibly lucky.
Screwing up is one of the best learning tools, so long as the only thing you're not learning is how to screw up.

Offline Tirath

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Re: JDM-040 missing components. Please, help
« Reply #8 on: August 28, 2023, 10:37:28 AM »
Thanks for the reply. Now I am sure that the problem is somewhere else. Solder pads are not shorted and controller is still working but not charging and usb cable not detected by ps4 as well. I am switching the battery with another controller to charge it. Need to recheck everything more precisely. Schematic scan would be appreciated.
Thanks have a good time.

 

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