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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 12 Mar 2010 (Friday) 06:41
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580ex always full power dump in manual mode...

 
ans3288
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Mar 12, 2010 06:41 |  #1

hi guys!

need some help, i have a 580ex flash mounted on top of camera. camera in manual mode, i set 580ex to M mode and adjust power setting from 1/1 to 1/128, the exposure stays the same, it seems that the flash is always firing a full power

when i switch the 580ex to ETTL, the flash works flawlessly.

when i take off the flash from the camera and press the pilot button, the flash also fires FULL power, i checked custom function and its set to fire at 1/32 when the test button is pressed.

any idea what the problem? the unit is already out of warranty...


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PacAce
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Mar 12, 2010 10:00 |  #2

It seems like you might have a defective flash. In manual mode, the flash should output exactly what you have set for the power output and not fire at full power when it's not set to 1/1. Send it off to Canon for servicing.

Regarding the custom function to fire at 1/32, that only applies when pressing the test button with the flash in E-TTL mode.


...Leo

  
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ans3288
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Mar 12, 2010 19:15 |  #3

thanks PacAce, i tried switching to ETTL mode and test firing the flash using the pilot button, still doing full power dump. will send it to canon...


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gtrag94
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Aug 22, 2011 00:47 |  #4

sorry to bring this back from the dead, but what did you hear? Mine's doing the same thing (but it additionally doesn't work as a master.... slave in E-TTL works perfectly, but not in Manual in any mode). Thanks!


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ans3288
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Aug 22, 2011 01:58 |  #5

i asked canon service center to check, they were suggesting to change the entire HEAD, they said thats were the problem is! and the price is almost a NEW FLASH!!!!


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gtrag94
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Aug 23, 2011 02:54 |  #6

hmmm... that's interesting. I wonder what was wrong with the head? I've read more into it and it sounds like the logic board might be bad. Apparently $80 part and $140 labor. I've also read a lot about people mentioning fixed price for flash repair ($120). Anyone heard of this? I've read it in very recent posts. Either way, I'm sending mine in tomorrow.

Did yours work as a master, just not ever in manual? Mine fires only at full power in manual, doesn't work in Multi, and doesn't work as a master. E-TTL works perfectly as a single flash or as a slave, including ratios. Weird. I'll let you know what I find out.

Why is Canon so sketchy on prices? I hear of some people getting killer deals on repair and I hear of other things like this. They can't even tell you how much a standard job like shutter replacement is? Come on. Even within $100?


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ans3288
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Aug 23, 2011 03:47 |  #7

we have exactly same problem!

gtrag94 wrote in post #12983145 (external link)
hmmm... that's interesting. I wonder what was wrong with the head? I've read more into it and it sounds like the logic board might be bad. Apparently $80 part and $140 labor. I've also read a lot about people mentioning fixed price for flash repair ($120). Anyone heard of this? I've read it in very recent posts. Either way, I'm sending mine in tomorrow.

Did yours work as a master, just not ever in manual? Mine fires only at full power in manual, doesn't work in Multi, and doesn't work as a master. E-TTL works perfectly as a single flash or as a slave, including ratios. Weird. I'll let you know what I find out.

Why is Canon so sketchy on prices? I hear of some people getting killer deals on repair and I hear of other things like this. They can't even tell you how much a standard job like shutter replacement is? Come on. Even within $100?


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gtrag94
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Aug 23, 2011 14:32 |  #8

did you actually have them fix yours? I sent mine off about an hour ago. I'll let you know what they say.... anyone want to buy a 580EX that works perfectly in E-TTL mode and as an E-TTL slave (but not manual or Master)? ;)


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ans3288
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Aug 23, 2011 15:45 |  #9

nope i didnt have it fixed :)

gtrag94 wrote in post #12985986 (external link)
did you actually have them fix yours? I sent mine off about an hour ago. I'll let you know what they say.... anyone want to buy a 580EX that works perfectly in E-TTL mode and as an E-TTL slave (but not manual or Master)? ;)


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dbld49
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Aug 23, 2011 21:27 as a reply to  @ ans3288's post |  #10

I've had 2 580II's repaired that were doing the full power dump. $120 for each repair.




  
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ans3288
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Aug 23, 2011 21:34 |  #11

anyone have any idea what could have happened to our flashes in order for it to act this way?


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dbld49
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Aug 23, 2011 22:03 as a reply to  @ ans3288's post |  #12

Mine were attached to PW tt5's when the problems occured. One repair said the flash assembly battery box did not operate properly and was replaced. The other one said the flash assembly did not properly operate the flash exposure, and replaced the flash head(lamp) assembly. Both were acting the exact same way, but had different repairs. I had the first fixed this April, the other was in June. Both have been fine since the repairs, either on camera, or paired with a tt5.




  
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gtrag94
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Aug 23, 2011 22:24 as a reply to  @ dbld49's post |  #13

that IS weird... anyway, I wonder how the earthquake will affect Canon Factory Service Center. Newport News, VA is only about 50 miles SE of the epicenter (Richmond, VA). Kinda creepy... tsunami/earthquakes at Canon Japan, and now earthquake in Canon Repair. The trifecta would be one in the earthquake prone California Service center. THAT would be bad luck!


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ROGERWILCO357
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Aug 24, 2011 00:10 |  #14

glad you did bring it up almost walked out of best buy with one doing the same thing exchanged it on the spot another thing it was doing was a strobe effect for no apparent reason on test. but read up here on these units and knew to test it before walking out of the store ..lucky catch..hope you get yours fixed.


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gtrag94
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Aug 24, 2011 02:51 as a reply to  @ ROGERWILCO357's post |  #15

also, why do some people get their flashes repaired for $120/$125 "flat fee" and some others are quoted more than the price of the flash??? When I talked to Canon, I asked them about a flat fee and they said "No way!"

What's up with that? Maybe the flat rate people sent them into Canon Repair California?


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580ex always full power dump in manual mode...
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