Go Back   Steve's Digicams Forums > Digicam Help > Flash (External)

Reply
 
Thread Tools Search this Thread
Old Dec 26, 2010, 10:20 AM   #1
Junior Member
 
Join Date: Dec 2010
Posts: 11
Default Stupid me

I should know better. I tried mounting my old Nikon external flash on my
Canon Rebel T1i. It flashed when I took a shot alright, but I'm assuming I blew out the built-in flash on the Canon because it won't work, at any setting. Anyone know if the flash can be repaired or am I looking at the cost of a whole new camera to repair it?

thanks in advance
chet
anatfizz is offline   Reply With Quote
Sponsored Links
Old Dec 28, 2010, 10:49 AM   #2
Senior Member
 
wave01's Avatar
 
Join Date: Jun 2010
Location: North West England
Posts: 1,748
Default

how old was the external flash
wave01 is offline   Reply With Quote
Old Dec 28, 2010, 2:20 PM   #3
Junior Member
 
Join Date: Dec 2010
Posts: 11
Default

It's a Nikon Speedlight-SB25. Bought it about 10-12 years ago when I bought my Nikon film N70.
anatfizz is offline   Reply With Quote
Old Dec 29, 2010, 6:20 AM   #4
Senior Member
 
wave01's Avatar
 
Join Date: Jun 2010
Location: North West England
Posts: 1,748
Default

Possiblities are you have blown the flash circuit but it should be fixable
wave01 is offline   Reply With Quote
Old Dec 29, 2010, 11:24 PM   #5
Senior Member
 
VTphotog's Avatar
 
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,214
Default

Checking the link for strobe trigger voltages, your flash is considered safe for the camera. That is only related to the voltage at the center pin, however. If the Nikon flash has more connections, for communication with the camera, it is likely that the pin layout for Canon and Nikon are different, and you may have damaged the flash control circuitry in the camera.

brian
VTphotog is offline   Reply With Quote
Old Jan 8, 2011, 5:01 PM   #6
Senior Member
 
iowa_jim's Avatar
 
Join Date: Jan 2010
Location: North Central Iowa
Posts: 589
Default

I ran into something on my T2i that might explain your issue. Check the connections at your hot shoe - wiggle the spring within and you might get your flash back.
iowa_jim is offline   Reply With Quote
Old Jan 9, 2011, 10:16 AM   #7
Junior Member
 
Join Date: Dec 2010
Posts: 11
Default

Couldn't find the "spring within". I'm inclined to believe that I damaged the flash control circuitry in the camera as an earlier post stated. Like I said, stupid me!
anatfizz is offline   Reply With Quote
Old Jan 9, 2011, 4:18 PM   #8
Senior Member
 
Join Date: Apr 2010
Posts: 584
Default

Quote:
Originally Posted by anatfizz View Post
Couldn't find the "spring within". I'm inclined to believe that I damaged the flash control circuitry in the camera as an earlier post stated. Like I said, stupid me!
Don't panic just yet. The most likely problem is a stuck micro-switch.
There are two strips of thin metal in the channels at each side of the
flash mount on the camera. There is a small switch under one of them.
This tells the camera that an external flash is mounted on the camera
and that the internal flash should be disabled. This system is completely
dumb, it can't discriminate between a flash, a fingernal, dust or any
small object trapped in the flash mount.

As iowa_jim said, it is usually possible to clear the fault with a
bit of wiggling. Try running your fingernail under the metal strips.

I have seen several reports of this problem on the T1i and T2i.
See this post: http://forums.dpreview.com/forums/re...ssage=31993875
corkpix is offline   Reply With Quote
Old Jan 12, 2011, 4:27 PM   #9
Junior Member
 
Join Date: Dec 2010
Posts: 11
Default

Eureka!! Thank you Corkpix and iowa_jim. That stuck micro-switch was the problem. Ran my fingernail under it and voila, it worked. However, at first it would flash repeatedly and show a 'busy signal' command in the LCD. Then, I noticed I hadn't taken the lens cap off....see what I mean by 'stupid me'? Anyway, problem solved and I really do appreciate everyone's input. Drinks are on me!!

Chet
anatfizz is offline   Reply With Quote
Old Jan 13, 2011, 4:17 AM   #10
Senior Member
 
Join Date: Apr 2010
Posts: 584
Default

Quote:
Originally Posted by anatfizz View Post
Eureka!! Thank you Corkpix and iowa_jim. That stuck micro-switch was the problem. Ran my fingernail under it and voila, it worked.
Good news! It would be a real shame if the camera was damaged.
Even relatively expensive cameras like the T1i are considered to
be disposable items these days. If there was serious damage,
it probably would have been beyond economical repair.

Quote:
However, at first it would flash repeatedly and show a 'busy signal' command in the LCD. Then, I noticed I hadn't taken the lens cap off....see what I mean by 'stupid me'?
That's not stupid. Stupid is when you regularly try to take photos when
the power switch is still in the off position. I know, I've been there and
done that many times.

Quote:
Drinks are on me!!
We might just take you up on your kind offer
corkpix is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 6:23 AM.