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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 14 Jul 2009 (Tuesday) 08:49
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Is my 580ex II defective? Based on....

2,279 posts
Joined Jul 2007
Location: New Jersey, USA
Jul 14, 2009 08:49 |  #1

Before I go through the trouble of sending this in to Canon repair, I wanted to ask everyone here of possibilities that may or may not be the case.

Essentially, I have a brand new 580ex II. Brand new in the sense that I don't put it through a rigorous use like a "real photographer" would put it through and essentially, my flash just stopped working after normal use.

When attached to the camera, the LCD screen is lit up and I can change settings, however, the pilot light and the little light below it isn't lit up. Obviously, when trying to use it, no flash comes out.

I have fresh batteries, used it on different cameras and still the same result. I don't use any external powerpack or for that matter did anything to the flash (like I didn't drop it or anything).

Anyone have any other suggestions or is this a clear enough indication that the flash is defective/broken.

If it's broken, I'm going to be disappointed for I don't even use the flash as often or as rigorous as it can handle.

Thanks in advance!

Canon EOS 40D | EOS Rebel XTI/400D | G9
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Cream of the Crop
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Joined Nov 2007
Location: Traryd, Sweden
Jul 14, 2009 14:54 |  #2

The little light below the pilot light should only come on to confirm proper flash exposure, so it's OK that you don't see that. You have to make it flash first...

But if the pilot light gets neither green nor red, then the flash isn't charging properly. If you know for sure the batteries are OK, then it must be something wrong with the charge circuitry, as the display does turn on. The flash is obviously not completely dead.

Does it respond to commands from the 40D's menu system?


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Is my 580ex II defective? Based on....
FORUMS General Gear Talk Flash and Studio Lighting 
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