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Video Display problem on color TFT LCD

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aasif

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I have used Texas intruments THS8136 10-bit triple video DAC to generate monochrome video from GREEN channel only (by grounding BLUE and RED channels and using video DAC mode).

I have displayed the output on analog video TV monitor. But when I connect the output with color TFT LCD (of RCA/BNC input) nothing is displayed on it.

The LCD does not message "No Signal", which means that it detect valid video signal.

I have tried connecting the output to few other color LCDs but experienced the same problem. But when I connect the output to monochrome LCD it works fine.

What are the possible reasons of this problem?
 

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