Quote Originally Posted by lxdude View Post
Not too bad, but I have my doubts that the shutters, electronically controlled except 1/500th, are easily serviceable; especially for something like flash sync. I suspect that the Seiko shutter mechanisms, with flat flexible cable and all, are probably made all of a piece, and are designed to be simply replaced. I don't know that conclusively, though.

Hoffy, the standard procedure of cleaning the contacts on the back of the lens is worth trying. They are gold plated, so use alcohol or similar on a swab or fine cloth, nothing abrasive. I doubt it's worth repair if repair is what it needs, but maybe. Contact Koh's Camera and see what they think.

EDIT: here's a nice tutorial on disassembly of a 150/3.5 S lens. A PS will be similar.


It shows which is the flash contact on the back of the lens. You could try to trace and look for a bad solder joint inside the lens; if the fault is in the shutter module itself that would be a delicate job if you were motivated to tackle it, but you might succeed. I would only do it for fun. If it came to that it makes more sense to buy another lens and sell for cheap the one you have, to someone who doesn't care about flash sync.
Yeah, I attacked the pins on the back of the lens with a polishing pad and a dremel - it made no difference.

Actually selling the lens for a bargain basement price is probably not a bad idea. I had thought of keeping it and getting another focal length for flash work (keep uming and erring between a 110 macro or the 180).