DCA1000EVM: Hardware failure confirmation

user6344589

Part Number: DCA1000EVM
Other Parts Discussed in Thread: AWR1843

Hi expert,

We recentely bought two sets of AWR1843 + DCA1000EVM development kits. And One of the kits works well but the other seems like had harware failure.

To be specific, after installation of the development kits and 5v 2.5a power supplied , there was no led signal shown on AWR 1843 and in the mean time DCA1000 only had one 5v led light on. We tried to switch the DCA1000 for two kits seperately and confirmed the problem was from one of the DCA1000.

With the help of our tech assistant, we did some voltage and resistance tests as following. We think that one of our DCA1000 has hardware failure and hope we can get it exchanged. Please help us confirmed whether we had a hard ware failure on our DCA1000.

Thanks as always!

Test Signal	Test	Resistance to ground(Ω)	Voltage to ground（V)	Comments
VCC_1V1(Or VCC_CORE)	FL2	0.5	0.02	1.1V FOR FPGA_CORE_SUPPLY
DDR_1V35(Or 1V35)	FL3	267.3	1.292	1.35V FOR DDR3
3V3_A(3V3)	FL4	25.6	1.5	3.3V FOR IO_SUPPLY
2V5	FL1	2	1.2	2.5V FOR ETHERNET & 1.1V LDO_IN
1V1	FL6	4.9	0.013	1.1V Ethernet PHY
VCCHTX	FL5	4.6	0.014	1.1V FPGA_SERDES
5V	FL8	450	2.45	POWER
	FL9	1.6	1.2

over 4 years ago

0 Ishita Kochar over 4 years ago

TI__Mastermind 31680 points

Hello User,

Thank you for the information. Our concerned expert will review this and get back before the end of this week.

Regards,

Ishita

0 aozer over 4 years ago

TI__Mastermind 29925 points

Hello,

The resistance to GND is very low so it definitely seems like there is something wrong. Can you please confirm two things:

1. Has the board been modified in any way?

2. How much current is the 5V supply pulling when you power on the DCA1000?

Regards,

Adrian

0 user6344589 over 4 years ago in reply to aozer

Prodigy 60 points

Hey Adrian,

We did not modify the board. Both two boards were installed and implemented by the same way but one board works well the others fialed. The current is 2.3 A when 5V supply power on the DCA 1000.

Regards,
Jinbo

0 aozer over 4 years ago in reply to user6344589

TI__Mastermind 29925 points

Hello,

I believe there is some failure with the power supply on the DCA1000 board. Can you please follow the process for returns on this page depending on where you purchased?

https://www.ti.com/support-quality/additional-information/customer-returns.html

Regards,

Adrian

0 user6344589 over 4 years ago in reply to aozer

Prodigy 60 points

Hey Adrian,

I have already submitted a return request since the board was purchased directly from TI Store. But the status of my request is still "submitted" without changing for 7 days. I am not sure whether this is a normal situation?

Thanks as always!

Regards,

Jinbo

0 aozer over 4 years ago in reply to user6344589

TI__Mastermind 29925 points

Hello Jinbo,

Sorry about that. That does not seem normal to me, I think you should have received a response by now. Maybe you can try to contact the customer support center about your request.

https://ticsc.service-now.com/csm/?_ticdt=MTYxNjE2ODE5NHwwMTZmYWZlM2U5YjAwMDM5YmIwZjg0YjBkYmUyMDMwNzMwMDFmMDZiMDA5Nzh8R0ExLjIuMTY5Mjg1MTg5Mi4xNTc5MjAzOTQ3fDA

Regards,

Adrian

0 user6344589 over 4 years ago in reply to aozer

Prodigy 60 points

Hey Adrian,

Thanks to your timely reply as always. I received the decline email as following from Ti Support this morning.

Status: Thank you for contacting Texas Instruments. We value your business. TI has carefully reviewed your return request. The return request is declined. Information about declined status is archined in the history link in your myTI account.

Reason for decline: Unacceptable: Other: please see details in comments section below

Comments from TI: For EVM bought from TI.com, please go to www.ti.com/csc submit ticket request for replacement or refund, TI customer support center team will verify the e2e post and follow up with it.

I am little confused. I was following the link https://www.ti.com/support-quality/additional-information/customer-returns.html and submitted return request from the section below

TI products purchased directly from TI or the TI store, and suspected to be nonconforming to datasheet electrical, mechanical or image quality specifications, and failure analysis is requested.

To request analysis of a suspected nonconforming product, please complete the return request submission form. Follow TI's guidelines for handling customer returns. Upon acceptance of the request, return instructions will be provided. Please do not ship products until instructed.

And in the return request., I chose product replacement

* Customer Requesting:

Refund for credit

Product replacement

Failure analysis

Note: Failure analysis is not guaranteed. Failure analysis will be done on an as needed basis, at TI discretion based on careful consideration of failure mode, frequency of failure & customer needs.

Could you please help me to check was there anything wrong with my return request.

Thanks.

Regards,

Jinbo

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DCA1000EVM: Hardware failure confirmation