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TMDSEMU200-U: Dead on arrival

Part Number: TMDSEMU200-U

Tool/software:

We bought 2 pcs of TMDSEMU200-U last June. We use these in our pre-production facility. One of the units was fine, no problems. The second unit was taken in use just now. But when connected, no LEDs are lit and the device is just dead. 

TI's warranty is very short, only 90 days. Is there anything that could be done with this unit? Any advise?