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Original question:

MSP-EXPCC430RFX: The temperature is measured 64c by internal temperature sensor of cc430f5137!

MSP-EXPCC430RFX: How to fix a shorted transmitter board?

lee Peng
Intellectual 720 points

Part Number: MSP-EXPCC430RFX

Dear TI engineer

I am using msp-expcc430RF development kit. However, it suddenly broke.  When connecting to the power source 2V, the current is higher than 1 A. When using the meter to measure the Vin and GND pin, it shows that they are shorted. I guess it is because I accidently connect it to a charged capacitor (around 6v) while at the same time the Vin and GND is accidently connected by a naked wire( I use wire to extend the Vin and GND). As a result, some part of it is broken.

How to find and fix the broken part? Could you please provide the instruction in steps? Or, do you sell this satellite board alone?  

It is urgent. Could you please also send this post to the e2e in China? Cause I am in hong kong, it's under Beijing time. Or should I post a same post in e2e china?

Here is the picture. The plastic port at the left is melted by hot air gun as I want to remove the capacitor at the Vin to check if it is broken. However, it is fine.

  • 0
    TI__Mastermind 22580 points

    Hello Li,

    I will ask one of our experts to comment on this post. It might take us couple of days to get back as it's a holiday on Monday.

    Thanks,

    Sai

  • 0
    Guru 117855 points

    Li Peng said:
    How to find and fix the broken part? Could you please provide the instruction in steps?

    The photo pretty clearly reveals:

    • likely absence of the proper board-repair/component removal tools & methods
    • and/or a 'rushed' or (pardon) 'inexpert' repair attempt

    Adequate 'tools, methods, focus & time' are required to 'find & fix' (if one is lucky) such boards.    Previous experience is (usually) required.

    When such a board contains, 'Expensive and/or Hard to Replace Components' - it should (always & only) be 'handled' by those w/substantial tools & experience!

  • 0 in reply to cb1_mobile
    TI__Mastermind 21270 points

    Hi,

    Any number of things could have gone wrong with the board. I am afraid the HW might be beyond repair. I suggest you buy a new board.

    Thanks.

  • 0 in reply to FI
    Guru 117855 points

    As a Tech Biz Owner - it would be preferred to, 'Attempt to Salvage' the most expensive components' - and then attempt (some form) of board rebuild.

    Again - proper equipment, board-repair skills, and patience ARE required.

    Careful extraction of the more expensive components - then properly 'testing' them - seems far beyond condemning them (unexamined) - due to 'fear.'