Seikosha-S Shutter Flash Sync Issue

[Ster.thing]

Hello all,
I'm currently trying to repair the flash sync on this Seikosha-S shutter off a Mamiyaflex. I tried resoldering the connections to no avail. If the PC sync cable touches the metal shutter housing it does fire. But I'm a bit lost on where to go from here. If anyone has any tips it would be greatly appreciated

 

[MattKing]

Welcome to Photrio.
I've moved your thread to the Repair sub-forum, because it seems to fit best there.
I hope you get the answers you need.

 

[koraks]

Verify that during the release cycle the contacts actually touch. This may be the problem. Also clean the contact surfaces as they may have burned a bit due to sparking.

 

[OAPOli]

I'm not sure that I understand the problem. For one, there shouldn't be a blob of solder on the outer contact. And the contact between the housing and inner tabs should occur *only* when the blades are fully open (in "X" mode). This is best tested with the main spring removed.

Also, the blades are very dirty (was this flushed-cleaned perhaps?) and the cocking gear is improperly timed with the cocking ring.