I bought it on occasion and I noticed that after
the blue line begins a devier from the middle of the grid to be completely offset at the bottom.
I want to share information about the mod project that I am doing now , I'm doing a modification for use a led light source in my JVC RS46.
I'll update the progress
This looks to be a very interesting project.
With that in mind, might I suggest you start a new thread detailing your proposed mod, so others can find it more easily if they would like to have a go too?
Not so easy if it is buried in a thread about a separate issue.
c is the optical block, we can do nothing.
a concern about the blue matrix apparently
Unfortunately the service manual does not cover any of the optical block other than complete replace it's a "single" part and from memory it is at least 1500 pounds so no point in doing so vs buying new.
No internal parts to the optical block are listed separately so would be guessing what the blue panel was even if you could get it. Not sure how it is attached as I didn't get that far in strip down.