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FORUMS General Gear Talk Flash and Studio Lighting
Thread started 10 Nov 2017 (Friday) 15:33
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Broken YN560 III (only full power flashes) - any fixes?

 
pulsar123
Goldmember
Joined Apr 2010
Canada
Nov 10, 2017 15:33 |  #1

I've used 5 of these for a couple of years in my home studio, all worked great, but now one of them would only flash at full power (regardless of the power setting). Anyone else had this issue? I wonder what got broken to cause these symptoms, and if it is fixable? (I already ordered a replacement, but still curious.)


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

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MalVeauX
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Florida
Nov 10, 2017 15:40 |  #2

Probably not worth the trouble.

https://www.youtube.co​m/watch?v=ycPYUknwNfY (external link)

But none of my YN flashes have had this problem. I have 3 x 560 III's. So I have not had to do anything to fix them. They're $50 used commonly, and that's how I bought all mine. Probably not worth fixing unless you just have stuff laying around that is needed.

Very best,


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pulsar123
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Joined Apr 2010
Canada
Nov 11, 2017 15:48 |  #3

Thanks, the video is crazy, but it pushed me in the right direction, and eventually I found this thread:

https://www.dpreview.c​om/forums/post/5630447​8 (external link)

I opened my flash, and the transistor is TIG056. I have the right tools (hot air soldering station), and as I have 6 YN560 and this seems to be a fairly common issue, I should order a bunch of these transistors from eBay.


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

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pulsar123
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Post has been edited 22 days ago by pulsar123.
Dec 29, 2017 12:46 |  #4

An update: I finally got cheap TIG056's from ebay (3.70$ for 5 pcs), and replacing the part in my YN560 III flash fixed the problem - it now properly adjusts the output power.

Given that this seems to be a fairly common issue with YN560 flashes, anyone who has a few of them (and some basic soldering skills) should stock the cheap IGBTs from China in advance, before something gets broken.

https://www.aliexpress​.com ...=a2g0s.9042311.0.0.​bzdlBV (external link)


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

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jay125
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Dec 29, 2017 18:42 |  #5

3.70 for 5 pieces vs replacement cost of the speedlight. Nice job!



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TooManyShots
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NYC
Dec 29, 2017 21:58 |  #6

That's was easy..I was told that you should even touch the PCB if the capacitor hasn't been fully discharged. Things can explode....:)


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pulsar123
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Joined Apr 2010
Canada
Dec 31, 2017 06:27 as a reply to TooManyShots's post |  #7

Indeed, one should be very careful when repairing flashes - there is a high voltage (350V) stored inside. In my case, it took more than a month from removing batteries to fixing the flash, so I wasn't worried. If less, I'd take some extra precautions first (like slowly discharging the capacitor).


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

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Broken YN560 III (only full power flashes) - any fixes?
FORUMS General Gear Talk Flash and Studio Lighting


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