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Adafruit Trinket M0 S/O#440080
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Adafruit Trinket M0 S/O#440080

by junliu on Wed Jan 09, 2019 10:36 pm

Hi Tech,
part: 3500
PO#:029-MY175
QTY: 50

Customer claims that 25 out of 50 pcs are defective.
Description: For “NG” part: power on, only green LED is always on and IC can’t be identified by PC. ( see attached pic-1 )
For “OK” part: power on, green LED is always on and red LED twinkle; IC can be identified by PC. ( see attached pic-2 )
Customer also feedback that he has been using this IC and met such issue before.
Could you help check and advise if parts defective?
Thanks.
Jun.LIU
Attachments
pic-2.jpg
pic-2.jpg (68.79 KiB) Viewed 99 times
pic-1.jpg
pic-1.jpg (72.81 KiB) Viewed 99 times

junliu
 
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Re: Adafruit Trinket M0 S/O#440080

by adafruit_support_carter on Wed Jan 09, 2019 10:53 pm

Everything else is the same in the testing? Same USB cable? Same USB port? Same computer? etc.

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Re: Adafruit Trinket M0 S/O#440080

by junliu on Thu Jan 10, 2019 10:01 pm

Yes, they are under same testing method, same USB cable, USB port, computer,...
Customer has a constant demand for this part and purchased from us for several times.
He stressed that he met such case before and doubt some batch have such issue..
Could you help check and advise if parts defective or any other reason?
Thanks.

junliu
 
Posts: 3
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Re: Adafruit Trinket M0 S/O#440080

by adafruit_support_carter on Fri Jan 11, 2019 2:19 am

OK. Thanks, just wanted to verify that to make sure. We can replace these and would also like to RMA the ones that aren't working. Are you in the US?

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Re: Adafruit Trinket M0 S/O#440080

by junliu on Sun Jan 13, 2019 9:33 pm

Hi Tech,
Yes, it's for Mouser customer. Please advise an RMA number.
Thanks.
Jun Liu

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Re: Adafruit Trinket M0 S/O#440080

by adafruit_support_carter on Mon Jan 14, 2019 1:40 pm

Send an email to support@adafruit.com with a link to this thread. They can get you replacement Trinket M0's. Also ask for an RMA FORPHIL to have the non-working Trinket M0's sent back.

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