On the Amplifone HV board, I am missing what I believe is called a thyristor in position Q4.
Its part number MCR100-3 8226
This part seems to be out of stock and obsolete. Can they be found locally anywhere, and if not, what is the equivalent to buy?
I am also missing the part at position R74 on the deflection board. Is there a source for this part?
I also have another HV Amplifone board that is missing a bunch of things. What is missing, and where can I buy the missing parts? Pic below:
Its part number MCR100-3 8226
This part seems to be out of stock and obsolete. Can they be found locally anywhere, and if not, what is the equivalent to buy?
I am also missing the part at position R74 on the deflection board. Is there a source for this part?
I also have another HV Amplifone board that is missing a bunch of things. What is missing, and where can I buy the missing parts? Pic below:

