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DLPDLCR4710EVM-G2: 连接HDMI口后输出有问题

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Prodigy 80 points
Part Number: DLPDLCR4710EVM-G2
Other Parts Discussed in Thread: DLPC3439

您好，之前更改过几次flash的固件（仅更改了占空比和启动电流），发现连接HDMI口后，投影如下图所示（尝试更改电脑上的投影图片，EVM显示不变）。不连接HDMI时显示正常，其他数据读取也正常。

将固件改回TI提供的固件后，情况还是一样。

请问，这可能是什么原因导致的，应该如何处理？