Cap on BDM-040 boards

PS5 Questions DualSense Controller
1

Hi ,

Thanks for looking at my post , I have a question for anyone who can help

The component in the blue box pictured is it required to be on the board ? mine is missing and looking at another post I have identified it and can replaced , the reason I’m asking is because I have severe bottom right diagonal stick drift on this controller (when powered on the right stuck is permanently stuck in the bottom right diagonal position)and I’m wondering if this could be the cause ? If anyone has any ideas they would be very welcome

Thank you

Dreds

3

not sure how to post the photo

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Upload your images at f. ex. at imgur.com and post the edited link _imgur.com/…

5

Thanks for the reply , for some reason I had imgur years ago but now it’s says unavailable in your region

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https://flic.kr/p/2rQ2EwM
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bdm-030
bdm-030816×653 54.6 KB

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9

Hi @jkyoho and thanks for the reply ,

Would this not being in place affect the stick movement ? The one I’m working on is stuck at 5 o’clock

Thank you

Dress

10

missing resistor, capacitor or through hole pad for joysticks could lead to malfunction

11

Hi @jkyoho thank you for your help you seen knowledgeable on this subject so if you don’t mind answering another question ,

Does each hold correspond to a particular movement ?

flic.kr/p/2rQ2EwM

12

joystick movement related to the voltage output from the X and Y axis potentiometer, ranging from -1.8v to 1.8v I believe. If you have a static, non moveable direction, you better check if you have torn broken pads on the joystick when you remove the old one or broken traces around. I don’t think that resistor is related to joystick but missing any component on the board would/might lead to malfunction of the controller for sure.

If you want specific answer on your project, try to upload the clear, detailed picture on the actual not working controller pcb you working on, instead of a picture online in general.

13

Thanks again for the reply @jkyoho

I received this board damaged already i noticed a trace damaged by this resistor/cap , I scraped of the via next to it and replaced the trace , the cap is not on ad I was hoping to get away with it not being there , I get continuity from the via to the pin , I believe the cap is not needed and there might be another issue ,

I will try and upload a photo when I’m back home later but this isn’t the easiest to do here as I have to use flickr as I can’t use imgur any more

I really appreciate your help with this matter and have taken some voltages that I’ll add here too I’m not sure they are right so you might be able to tell me if they are incorrect

Thanks again

flic.kr/p/2rQdu7G

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You should not have any voltage on J and N since they are same as D and E should be ground. However, M and C should be same 1.8v

image
image914×485 44.5 KB

16

Thanks again @jkyoho

I misplaced some of the voltage readings , I was rushing the other night. 0.6v seems low could that cause the stick not to be centred ? On the other one I get 0.9 which is higher should they not be the same ? Does the voltage regulate the centre of the stick , being too low is it pulling it away from the centre ?

Here are the updated ones

Thank you

Dreds

flic.kr/p/2rQhCTD

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IMG_8555
IMG_85551206×690 160 KB

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Voltage looks fine. Need actual picture on the board to determine if any trace broken