How to convert closed captions to useful subtitles?

I have a LVW-5005 with the latest firmware. It can record and display closed captions fine. I want to convert these captions to subtitles to watch them on my computer, but it’s impossible!

I followed this guide:
Then, I converted the resulting the file to SRT format with CCParser from here.
The file works, but it has thousands of spelling mistakes:

00:54:50,299 --> 00:54:50,933
#@@@@HIA(gS TRUE NATURE, CANA(g HE, LEX?ve{}tA(g 

I tried to fix it with Subtitle Workshop , but that would take too much time.

Has anyone been able to do this in an easier way?

Thanks in advance.