the top fan cools the CCD and the one you probably hear the most out the front of the camera. View attachment 142044
Replaced all fans. The F35 is practically dead silent now, even at idle!
C
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the top fan cools the CCD and the one you probably hear the most out the front of the camera. View attachment 142044

















Side:
Remove the "Fat" side of the camera by unscrewing the Lemo Power ring and then unscrewing the 4 screws in the corners. This side comes straight off but the rubber from the SDI connectors usually get's caught at the back.
You need to pop the SDI cables off the back of the ports. Disconnect the remote cable at bottom also. Then there are 2 screws at the top and bottom of the fan module which hold it in place. The bottom one is a bit buried to find. Once the 2 screws are off the whole fan module will slide straight up. Disconnect the fan board before you pull it too far away.
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Then the fans come out by squeezing the little tabs on the backside of the fan module. Once you squeeze them with pliers, the fans should fall out.
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What's crazy is I have seen both fans setup in either way. It seems like camera houses and maybe Panavision (the ones I found reversed) took it upon themselves to decide how the air should flow.
Thanks for showing photo, that is the way Sony designed it. I prefer both sets of fans to be blowing cool air in from the outside and not being used to exhaust air from the camera.
Yeah that is very interesting.
The way you have mounted the top fan though is shooting air out of the camera, the label side is where it sucks it's air in. Just FYI
C

So in a stock camera body would you guys say pull air in with the side fans or use it as an exhaust? top fan I assume would work better pushing air down?
I read the pins layout of Noctua off their literature and the Sony fans had the + - lines labeled. You are going to want to swap the + and - lines if your fans are sucking air in the label side. The fan blades are designed to work best one way.
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And then the third, probably really hard to replace fan on the bottom of the camera exhausts the air too?

The Sony Diagrams confirm:
Top sucks air down into the CCD.
Back exhaust out of the back.