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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 15 Feb 2011 (Tuesday) 12:26
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Faulty Yongnuo YN468 repaired

 
danpritts
Hatchling
1 post
Joined Oct 2006
     
Jul 25, 2012 23:02 |  #61

Bumping an old thread; I've had this flash and the replacement capacitor sitting around for a few months and finally got around to the repair tonight.

I got the new cap in successfully and so far, my flash is working great.

For the record, my flash has a metal base and the discrete (i think that's the right term - not surface mount) capacitor, like in rpolistr's photos.

Thanks rpolistr so much for the instructions. Hopefully the fix will work for me; if not, into the recycle bin it goes.

Note to those who come after - metal film capacitors do not have polarity, so if that's the kind you get you will not need to worry about that.




  
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OmeGardian
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Aug 11, 2012 05:02 |  #62

OmeGardian wrote in post #14383229 (external link)
Hello, I'm new here.
I killed my flash, by shorting 2 wires. it seems that one transistor is blown away, marked as Q5 on PCB with LED cable attached to it. Could someone tell me what kind of transistor or other component was there? I still hope I can repair it, and no more things are fried
I tried yongnuo service, they won't provide datasheets of any kind..
thank you

any good soul that could look at that PCB? thanks




  
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OmeGardian
Hatchling
4 posts
Joined May 2012
     
Oct 29, 2012 05:22 |  #63

well i guess everyone is too lazy to help me. still - nobody to help me? just take a decent pic of the PCB




  
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dedsen
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Oct 29, 2012 08:56 |  #64

OmeGardian wrote in post #15181439 (external link)
well i guess everyone is too lazy to help me. still - nobody to help me? just take a decent pic of the PCB

Comments like that are guaranteed to make friends and get free help. I am sure you will get the answer you seek now. :rolleyes:



  
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OmeGardian
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Nov 22, 2012 13:52 |  #65

i asked nicely twice. in the meantime the flash is rorring on my shelf.
you are right, no need to be rude, and i think i wasn't.. but see - it's just one or two photos of that pcbit doesnt matter anymore probably, chances to fix it are slim at best




  
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TeleFragger
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Mar 23, 2013 07:48 |  #66

TeleFragger wrote in post #11868284 (external link)
ordered a yn-468 few days ago shipping from within US... yes i know.. china sent to new mexico.. then he ships out.. so should be here soon... hopefully i wont need to get to this level.. well i wont at least for 6 months.. that is how long the warranty is.. but

this kind of stuff is definitely bw!

thank you guys for your time!!!!

well my flash died last night at a fashion show my son was in.
it was flashing.. then i shout it and camera off..
then later turned it all back on and flash wouldnt go... even with pilot light..
oh well.. maybe ill have to look into fixing it so hope these instructions help me!

side note...
im wondering if there is another flash out there so time to search for a new one until i fix this one...


GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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TeleFragger
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Mar 26, 2013 08:03 |  #67

going to read back through on parts needed and try to do this.. a bit busy for now so i ended up buying a YN-468 II from ebay last night.. they are local so should be here in a day or 2... shame they wouldnt let me pick it up.. grrr. but I figured if I cant get mine fixed I want TTL and for the price it is good for me..


GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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TeleFragger
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Mar 27, 2013 12:47 |  #68

i may have found some caps and will post a link once i hear back from rpolitsr so if they work i will post a link...

side note for you that want to solder, or solder and have a junky solder pen and want an upgrade but at a cheap price...

There is a Hakko 936 soldering station knock off.. it is a great unit and I bought one and so have many on an RC forum I am a member of.. so read others thoughts.. if you need one great price. i bought options too and got $50 into it with solder spool holder and all...

Thread - http://www.rccrawler.c​om …k-off-solder-station.html (external link)

Purchase - http://www.hobbyking.c​om …Range_USA_Wareh​ouse_.html (external link)

my setup...

IMAGE: http://farm9.staticflickr.com/8036/7952991580_0fd59fea3d_b.jpg
IMAGE LINK: http://www.flickr.com …/56197228@N05/7​952991580/  (external link)
Soldering station (external link) by TeleFragger / RootBreaker (external link), on Flickr

GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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Sens0r
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Mar 27, 2013 13:52 as a reply to  @ TeleFragger's post |  #69

^^ You really don't need a soldering station to solder a capacitor onto a circuit board..

Just use a generic pen and a clean head with some solder iron.. be swift and gentle, and all should go well.

I have the YN-560II which I haven't used yet (planning to give it a few tests tonight after work).. If it ever fries, I know what to do :)


My profile on 500px.com (external link) | Follow me on Instagram (external link)
Canon 600D | Canon EF-S 18-55mm F/3.5-5.6 IS II | Canon EF 50mm 1.8 | Tamron AF 70-300mm f/4.0-5.6 SP Di VC USD XLD | YN-560II

  
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TeleFragger
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Mar 27, 2013 14:05 |  #70

^^ I know you dont need a station.. they are nice.. i have always used a pen... i threw all 4 of them away once i got this.. it was a if your in the market deal...

anyway.. as said. he replied... here is what I bought and even if 1 goes bad a year I will have this flash for a long time if that is all that dies on it!

http://www.ebay.com …_trksid=p3984.m​1439.l2649 (external link)


GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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TeleFragger
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Apr 03, 2013 21:10 |  #71

so in my thread it was brought up as possibly a bad flash bulb too...
and since a PM lead you wanting me to add to this thread.. I will easily do so...

so when your flash wasnt firing and your CAP was bad... was your LED red and pressing the button did nothing?

so if you think of it that if you had batteries low on power, you would see a green LED while charging then red when ready to fire. Press pilot and get a fire flash and if batteries still low... green then red.
did you see this while your CAP was bad?

my flash is showing red meaning charged, ready to fire and pressing pilot doesnt change anything.

in theory.... that means red = ready to fire so one could think a bad bulb, but then again, it doesnt go green.

sorry for the "box wine babblin"


GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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TeleFragger
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Apr 10, 2013 20:11 |  #72

well i want to post here for others... but then going to post into mine also..

i was told to check the bulb.. but my luck never fails me.. i didnt bother taking it apart as I want to get the cap in first.. expecting it to be the worst it could be...


I took my flash apart as in this thread.. THANK YOU MAN!!! was so easy a caveman can do it!!!!!!

so what did I find???

IMAGE: http://farm9.staticflickr.com/8538/8638217689_6b78306b38_b.jpg
IMAGE LINK: http://www.flickr.com …/56197228@N05/8​638217689/  (external link)
YN468-2 (external link) by TeleFragger / RootBreaker (external link), on Flickr


then this hit me.. ok i have to solder that wire.. which I did and my flash work GREAT!!!

but there is more than one of these flash models out.. i got mine a bit ago so it isnt that new.. but guess what..
the cap I thought I was gonna replace.. umm has been replaced and better?????

IMAGE: http://farm9.staticflickr.com/8545/8639319746_24c3f4d93a_b.jpg
IMAGE LINK: http://www.flickr.com …/56197228@N05/8​639319746/  (external link)
YN468-1 (external link) by TeleFragger / RootBreaker (external link), on Flickr

GearBag - Feedback****Flickr - my playhouse (external link)****RF-603 Discussion
Canon 7Dm2 Gripped | 32GB Transcend CF | 64GB Toshiba FlashAir | YN-468 Flash | YN-468 II Flash | RF-603 | EF-S 18-55 IS|EF 24-105L|EF 50 MKII 1.8|EF-S 55-250 IS |EF 85 1.8| Tamron SP 70-200mm f/2.8 Di VC |Primo's Trigger Stick Monopod | Manfrotto Carbon Fiber Tripod
if I post a pic.. it is there to be picked on... (I have thick skin.. im in IT)

  
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Faulty Yongnuo YN468 repaired
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