Originally posted by stevebrot It is my understanding that Mark Hama is still active.
Steve
I've sent him a couple of TL (MAT 124G and recently a MAT LM), I have 6 Yashica 35s, couple are duplicate models. I've asked if he does any repair on the Yashica 35s, no answer on that. Twin Lense, Yes; 35s Unknown. I haven't tried sending him a query for just a specific model, it always has been an added sentence on a quote for price to fix a TL, so it could be asking if he can fix what you have. I do know that what he has worked on for me, has been awesome!
I have found that there are several videos and guides online for cleaning, replacing foams (cushioning for mirror), and the light seals around the film loading door. Some shots of the electronics, however, for repair or replacing any electronics, I'd look for a model on ebay that you can swap components out.