I have seen instances with the ADV7842 where the I2C bus will stop responding. There is an active HDMI signal on one of the input ports and the video and audio outputs will stop working when this happens. Where should I look for a problem?
So basically the part just stops doing anything? Does it recover or do you have to do a hard reset?
How do you reproduce the issue?
There isn't much here for me to work with but a hard failure is normally a power and/or ground issue.
You have to do a hard reset to get the part to respond again. As far as reproducing it goes I’m not sure. This has happened very sporadically and it occurs seemingly out of the blue; in the middle of playing a Blu-ray movie, for example. I was mainly looking for any other reports of this behavior to see if there was something specific I should look into.
I haven't heard of anything like that. You'll probably have to put some probes on it and try to capture some signals, and power from right before/during the crash.
Retrieving data ...