fuji ga645w aperture / shutting down issue

after some testing i was able to get the camera out of the error. it turned out that it passes the test if you turn on the camera upside down. but during the inspection i found out that the diaphragm works at all values ​​except fully open. this indicated a connection with the infrared hall sensor in the diaphragm.
post about this repair you can read on my lj page:
awayrepairs.li...
my instagram for repairs @awayrepairs