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DLPDLCR2010EVM: DLP lightcrafter 2010 does not power up, possibly due to incorrect power supply

Roshan Satapathy
Prodigy 20 points

Part Number: DLPDLCR2010EVM

Hi,

I am using a DLP Lightcrafter 2010 Evaluation Module for my experiments. The recommended power supply is 5V. However, in my experience, the device usually works without problem if the input is a little higher (7.5V or 9V) although I always use a 5V power source.
Recently, I tried to power the device with a 9V power supply, by mistake. The device turned on for a fraction of a second and immediately turned off. I realised this might be due to incorrect power supply and changed it to 5V. However, the device does not power up after that.

The power supply I am using is rated 1A.
The voltage across the J12(power input) is ~2.4V no matter what power supply I use.
The D15(SYSPWR) LED turns on but the D16(PWRON) LED does not.
I fear some part of the circuit is damaged, although there is no heating or burning smell which makes me think most of the important components are fine.

Did I blow up a fuse in the device and can I replace it? Is the device damaged permanently? Are there parts that I can salvage?
Any help would be appreciated.

  • 0
    TI__Mastermind 28005 points

    Roshan,

    Welcome to the E2E forums, and thanks for your interest in our DLP technology.

    It's very likely that you've damaged something on the device. There are several voltage regulators which may or may not be working anymore, as well as a power management IC which also performs voltage management.

    If you blew something important such as the power management IC, it is unlikely you will be able to bring the board back to life. Here are some suggestions from me on how to proceed:

    > Grab the Bill of Materials and board schematic from the associated TI Reference Design page: https://www.ti.com/tool/TIDA-00325

    > Access the DLPC3430 datasheet, and navigate to the "System Power Up Sequence" Timing Diagram: https://www.ti.com/lit/ds/symlink/dlpc3430.pdf

    > Using these two together, probe your system to determine which power-up voltages (if any) are coming up properly. If you are lucky, maybe you will find a specific regulator that is easily replacable is damaged. If not, you may be unable to repair the system.

    I hope this helps.

    Regards,

    Philippe Dollo

  • 0 in reply to Philippe Dollo
    Prodigy 20 points

    Hi Philippe,

    It seems that the problem only occurs when I connect the driver board. In fact, it seems that the DLPA2005 gets very hot and there is a mild burning smell.

    Does that give a clue? I apologize for being if that's too vague.

    In any case, if its unrepairable, what's the minimum number of components do I need to change to salvage the projector?

    Best,
    Roshan

  • 0 in reply to Roshan Satapathy
    TI__Genius 9971 points

    Roshan,

    It seems that the DLPA might have been damaged. If this is the case, reviving the EVM will be difficult.

    I would suggest you to use a multimeter to figure out what all components might have been damaged by doing continuity checks and see whether they can be replaced or not.

    Regards,

    Mayank