Question: Troubleshoot Magnavox DTV digital to analog converter with garbled video output

#1
I retired this box because the video output failed but I'd like to see if
there's component that I could replace to fix it. I inspected the capacitors and
they all look normal.
IMG_0803[1].jpg

In the URL below you can see the output from the unit.

[video=youtube_share;yxOgupU8byQ]https://youtu.be/yxOgupU8byQ[/video]

Thanks
 
#3
I am guessing that the problem was the input signal. I fiddled with the box this evening and couldn't duplicate the image I sent in, but even better, I was able to
get several channels with sound and it all seems to be working just fine. I reassembled the case and chalk the success up to blind luck.

Thanks everyone for your support and help.
 
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