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DLPC350: Light Crafter 4500 EVM doesn't connect via USB, RED LED on back

Part Number: DLPC350

Hi.

I have the LightCrafter 4500 evaluation boar, and have been using it successfully for a while. 

but today i can't conenct with pc.having the same problem as,

e2e.ti.com/.../651321

DLPC350: Light Crafter 4500 EVM doesn't connect via USB, RED LED on back,

but in my board. The fan on the rear of the device can't work, no turning,

and the main chip dlp on top, very heat, and Projection image on the wall is red stripe.