September 20, 2014, 06:35:53 PM

Author Topic: 600 ex -rt sticky wheel syndrome  (Read 989 times)

thelonelyphotographer

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600 ex -rt sticky wheel syndrome
« on: January 04, 2013, 05:10:44 PM »
I have 3 of the 600 ex rt  speedlites.  last night as I was gearing up one of the units the adjustment wheel became really stuck  almost impossible to move I had to jam my fingernails into the grooves to rotate it.
the other 2 units units seemed stiffer than usual. I took them to Canon service in Irvine 53 miles away,
the intake receptionist took the bad one back to repair  and came back  said it was normal.   Well  that  made my day,  I told the girl to try the  other unit.  duh...
A speedlite you can't adjust is useless.  I think the lube used is  gumming up the wheel  as it was really cold here   and  maybe the heat from the flashing   degraded the  lube.   either way   its a problem  especially for a $550 speedlite.  My other two units are exhibiting bad behavior as well..  I really think the cold weather is affecting  them..

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600 ex -rt sticky wheel syndrome
« on: January 04, 2013, 05:10:44 PM »

Marsu42

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Re: 600 ex -rt sticky wheel syndrome
« Reply #1 on: January 05, 2013, 04:27:35 AM »
I really think the cold weather is affecting  them..

I've had the same experience, the wheel on my 600rt some time became nearly impossible to move and I was near taking it to Canon (and waiting a couple of weeks since I don't have cps). But it loosened itsself again, and right now indoors it's 100% ok.

It really might be cold weather and thus the problem probably is non-serviceable. Maybe Canon will change the lubrication on the next bunch of flashes if they get too many reports, the usual effect of being an early adopter...

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Re: 600 ex -rt sticky wheel syndrome
« Reply #1 on: January 05, 2013, 04:27:35 AM »