Tiva™ C Series TM4C123G LaunchPad ordered for TIIC-IDC not working. Can it be replaced ? - Please reply urgently.

SOMEN KUNDU said:

It is the main component of my project so I need it for carrying it out.  And - please reply urgently.

Perhaps of equal (or higher) "urgency" is the need for you to carefully and diligently examine all of your handling, connecting, and programming - likely to have visited this (misfortune) upon you.

Realize that vendor has sold/shipped/delivered well over 5K (likely far more) of such boards - few arrive "DOA" as you claim.  Usually - but not always - such vendors perform some test/verify upon these boards prior to their final packaging & shipment.  Thus - odds are high that some way/how - your handling/connecting/programming caused your fate.

If you reject this "what might you have done to cause" guidance - don't you (likely) enable a "repeat" mishandling performance?   And a 2nd (mystery, of course) DOA board?

Enough - what can you do now - in the near future?

Is ordering "just one" of a most critical item wise?   Are you experienced with these boards?   If not - should not you make the effort to engage those who are - who can "steer you" around/away from "usual" mistakes?   These suggestions aim to reduce the need for such, "urgent" response.  ("urgent" is not read kindly by most on any forum - urgent to whom?)

Have you contacted the nearest and/or largest sales/tech facility this vendor has - in your region?  And plead your case there? 

Are tech firms nearby - universities - again by contacting nearest vendor facility you should be able to learn, "who nearby may have such a board - and may be willing to "lend" one to you."

More urgent I'd say - is a thorough review of your past methods - which remain, "Suspect #1" in your board's misfortune.  Exploiting your vendor's regional sources seems best means to gain a quick, less-traveled replacement - although I'd exercise far more care/caution w/board #2...

And possibly ask TI stop ask us to support all these request than use this forum as real professional support.
We are not here to give free support asking for teach for free. We wish have real tech support or college level but not in a so disruptive manner.
The only one I burned was stellaris LX120 due to zero Ohm resistors!!! Broken GPIO are isolated but It is still working after 3 or 4 Yr too!!
I bought a lot of these board I never found one defective nor my classes.
I suppose a new computer or cleaning the USB receptacle, unbend pin, remove metal debris form board is the way of this strange uneven impossible failure.
When A TIVA_launchpad forum???? When generic unclassified request forum???
O my poor old eyes what have to read......

Sir,
Thank you for such quick response of yours. I have been using microcontrollers for more than 3 years now and I suppose being a pre-final year student of electronics engineering, I do have some knowledge about the usage of the computer and electronics components such as this.
"Urgency" is something that one writes after days of mailing the concerned authorities without a proper and helpful reply. And yes, it is "very urgent" to me. I am sorry if it hurt anyone's sentiments but I don't see "urgent" as a word to be felt bad about because this is a forum where thousands of people post thousands of questions everyday and some maybe "urgent" to the user.
If you are admitting that "few arrive DOA", then why can't my product be one of those "few"?
Sir, I would also like to inform you that the "nearest vendor facility" is over 500 km from my city, which is not that "near" i guess.
Thank you again for your time and kind words.

Regards

Somen

SOMEN KUNDU said:

Thank you for such quick response of yours. I have been using microcontrollers for more than 3 years now and I suppose being a pre-final year student of electronics engineering, I do have some knowledge about the usage of the computer and electronics components such as this.
"Urgency" is something that one writes after days of mailing the concerned authorities without a proper and helpful reply. And yes, it is "very urgent"

 Hi, 3 year suppose one has familiarity with regulator processor and failure analysis. Your request is OFF TOPIC here as the tons arrive here of same kind.

 Ask TIEstore not TIVA microcontroller, this is an issue related to TIVA?

 Is processor overheating?

 Is power regulator?

 Is what causing this issue?

 Some measurement to pinpoint what happen?

 Our community can do something to increasing post like yours was to be directed to commercial section is forever well supported??

 Urgent when I need to be secure of result I order at almost 2 or 3 to prevent one possible failure and have a backup to presentation too...

 So fault is primary at your side and we cannot do nothing more than say...

 Is more urgent my multimillion device project or your single device project? So (Edit I) we have to stop our jobs to answer a tons of similar requests?

 thinks and do your learn about how to pose to real world not as you think can be, please seldom see is appreciated but remember we are not payd by none and we share our time to learn new product not support Arduino like market!

 Dear young, first you have to learn before to be hired and fire against after you got fired and see if reason is your or their.

 Again you wrote in a TECHNICAL not COMMERCIAL section of forum, so we learn about how things work.

 If you insist DOESN'T WORK... URGENT....- DO ANSWER NOW.... as from VERY BAD habit of this forum you aren't welcome here. So apologizes or we close conversation forever.

 Are you planning to be hired in technical section? Then welcome here after you learn be one of community of us.. Think about  a so called commercial where all other are guilty than you? <Have a good luck> don't pretend us to serve you, we forever do inspection as we learned from our long term formation and we all fire over you, we are not pressed by our commercial section boss and forever fire against if you got hired by mistake.

 So GRASP in DEEP here we analyse what happen to understand what is failure..

 NO DETAILS  ------> NO POSSIBLE ANSWER TOO!!!!

-- (@Amit, I think a stick with some of this conversation has to be prepared and imposed BEFORE to first post in this area....) --

 again @poster

 Otherwise you can simply repack your stuff send back at your expense and wait someone can do some improbable analysis on burned silicon.. They can do to pinpoint possible failure but never you know why, time is exceeding your value to single failure over mature device.

Are you planning to collaborate with us? Provide details, we see nothing than arrogant answer and request:

 Processor is overheating, you say regulator is OK, why is ok?

 some measure of current? Voltage across some section?

 Some scope waveform of power rail?

 which processor overheat what temperature?

 We don't see none of these SO:

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 *********   PLEASE LEARN and  Proceed this way:    ***** 

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 Start remove the jumper VCC near both USB sockets and see if still green led pulse or stay on. If is pulsating too remove power suddenly. Report here and post  voltage and current of USB power rail if possible  and (MUST BE DONE) a hi resolution (at almost 3 MPixel)  picture of board too.

 If stay ON then connect an ammeter to both pin of jumper and measure the current as fast as possible, if greater than few tens mAmps then some failure are affecting host processor.

 Are all pin of launchpad connector straight?

 Have you applied something to pin? Please tell us what happened to prevent possible failure...

 ... Admit mistake to prevent next possible failure is better than mess up....  Who just mess up is kicked off and we learn on successive failure if repeat at unsustainable rate.

Hi Somen, thank for what? I don't see as solved possible issue, so you leave us aware of what happened and you got exposed to next time possible failure?
IMHO wrong move, why not collaborate and get chance to have a drop in? I know rework is not recommended nor is less expensive than buy another board but do what we requested otherwise your failure is double. Board can be revived too but is not best way failure analysis can help forever you and us.
My failure on first board where got public telling remove ZERO OHM, this damage GPIO in some configuration. Second board where fast inspected and when similar behaviour was there immediate erase of flash and schematic close view was applied. Second board survived and got working, first has 3 GPIO impaired but is still working 3 or 4 Yr after. From that event till now all boarg I receive get "Tombstone rework" ("C" CB1 for name) to both zero Ohm resistor, this help remember first innocent Stellaris board give up his poor GPIO to learning.
How voltage regulator is fine and processor overheating? Which processor host ICDI or both? Picture of board? did you removed power jumper to isolate host or board failure? If you got real unfortunate one board damaged why not expose to us?