Speedlight battery leak

jackietan77

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I have a nikon sb700, battery leak. I clean and sand away the rust at the contact metal at the door. I also tested with a muiltmeter. Inside does not corros. It’s still not working. Nikon service center does not repair. Any advice. Thank you
 
I have a nikon sb700, battery leak. I clean and sand away the rust at the contact metal at the door. I also tested with a muiltmeter. Inside does not corros. It’s still not working. Nikon service center does not repair. Any advice. Thank you
Verify that the contact hasn't been mashed down or eaten to the point where it doesn't make good contact. My next guess would be the leak got inside the case and ate the power wire leading away from the contact.

I suffered both these scenarios over the decades. Good luck!
 
Excellent answer by hotdog321.

You could also try re-flowing the solder joints at the battery terminals, if you can get the case apart and you have soldering tools.
 
I don’t know where you are , but if in the UK , AJ Johnstone are very good ( I’ve used their services a few times) , but do bear in mind a repair might cost as much as buying another flash as a used item .


The comments left by others are worth reading first .
 
There is a chemical cleaner for removing and neutralizing the corrosion from battery leaks. It is available at most electronic stores. But if the leak corrosion has eaten away the metal contacts and wires, nothing short of replacing will help.
 
I have a nikon sb700, battery leak. I clean and sand away the rust at the contact metal at the door. I also tested with a muiltmeter. Inside does not corros. It’s still not working. Nikon service center does not repair. Any advice. Thank you
Years ago I had the same with the Nikon SB-26, alkaline batteries leaked and corroded things. Never worked the same again when using alkalines.

At some stage I tried it again with Sanyo Eneloops and it came good. My theory being that the Ni-MH batteries are a whisker longer than the alkalines and make firmer contact with the corroded but cleaned contacts. Now it is reliable even years later,

Later changed over to IKEA LADDA batteries as they are same as Eneloops but way cheaper.

Regards...... Guy
 
Excellent answer by hotdog321.

You could also try re-flowing the solder joints at the battery terminals, if you can get the case apart and you have soldering tools.
If you take it apart, please take care of the high voltage capacitor!

It may sincerely harm you and if "in luck" even kill you...
 
I have a nikon sb700, battery leak. I clean and sand away the rust at the contact metal at the door. I also tested with a muiltmeter. Inside does not corros. It’s still not working. Nikon service center does not repair. Any advice. Thank you
Years ago I had the same with the Nikon SB-26, alkaline batteries leaked and corroded things. Never worked the same again when using alkalines.

At some stage I tried it again with Sanyo Eneloops and it came good. My theory being that the Ni-MH batteries are a whisker longer than the alkalines and make firmer contact with the corroded but cleaned contacts. Now it is reliable even years later,

Later changed over to IKEA LADDA batteries as they are same as Eneloops but way cheaper.

Regards...... Guy
I don't think there is any difference in dimensions , but NiMh batteries have much lower internal resistance and deliver more current - hence the faster recycle times they give when used in flashes .
 
Excellent answer by hotdog321.

You could also try re-flowing the solder joints at the battery terminals, if you can get the case apart and you have soldering tools.
If you take it apart, please take care of the high voltage capacitor!

It may sincerely harm you and if "in luck" even kill you...
Highly unlikely unless someone has a serious heart issue, though even these small caps can have quite a "bite."
 
Since I don't know OP's heart's condition, I thought it was in place with a warning.

As you so well put it yourself "unless"...

/edit:

Thinking of it, I'm not sure that even a "healthy" heart couldn't be affected.

An electric pulse will affect a muscle, making it contract. So perhaps depending on where the heart is in it's pulse cycle, it may be more-or-less sensitive to this contraction.

Heart cramp? urgh...! :-D
 
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Since I don't know OP's heart's condition, I thought it was in place with a warning.

As you so well put it yourself "unless"...

/edit:

Thinking of it, I'm not sure that even a "healthy" heart couldn't be affected.

An electric pulse will affect a muscle, making it contract. So perhaps depending on where the heart is in it's pulse cycle, it may be more-or-less sensitive to this contraction.

Heart cramp? urgh...! :-D
CHARGE TO 200........ CLEAR...!!!!
 
I have a nikon sb700, battery leak. I clean and sand away the rust at the contact metal at the door. I also tested with a muiltmeter. Inside does not corros. It’s still not working. Nikon service center does not repair. Any advice. Thank you
Years ago I had the same with the Nikon SB-26, alkaline batteries leaked and corroded things. Never worked the same again when using alkalines.

At some stage I tried it again with Sanyo Eneloops and it came good. My theory being that the Ni-MH batteries are a whisker longer than the alkalines and make firmer contact with the corroded but cleaned contacts. Now it is reliable even years later,

Later changed over to IKEA LADDA batteries as they are same as Eneloops but way cheaper.
I don't think there is any difference in dimensions ,
Yes, they are different, the battery hatch is a lot tighter to slide closed on Ni-MH Eneloops compared to normal alkaline, maybe only a fraction of a mm but it made a definite difference to contact reliability.
but NiMh batteries have much lower internal resistance and deliver more current - hence the faster recycle times they give when used in flashes .
Yes , that as well, but it was really all about the difference physical size.

I'm not about to measure the battery length with my metal vernier calipers as that low internal resistance may prove very interesting.

Regards..... Guy
 
Excellent answer by hotdog321.

You could also try re-flowing the solder joints at the battery terminals, if you can get the case apart and you have soldering tools.
If you take it apart, please take care of the high voltage capacitor!

It may sincerely harm you and if "in luck" even kill you...
Highly unlikely unless someone has a serious heart issue, though even these small caps can have quite a "bite."
No it will theoretically kill.

The flash has a capacitor voltage of something like 300 volts or more at very high current capability and the heart can stop. Usually people get that shock from hand to hand and that is bad, as the current passes right across the body and through the heart.

Any service manual has the warning, the danger is very real.

Some reading https://www.asc.ohio-state.edu/physics/p616/safety/fatal_current.html and http://www.sciforums.com/threads/shock-from-a-camera-flash-is-lethal.40865/

Regards.... Guy
 
Thank you guys for the information. I sand off the surface rusty contact and solder some lead on it and it work again but sometime need to open and close the door a few times then it work whenever change battery.
 
Thank you guys for the information. I sand off the surface rusty contact and solder some lead on it and it work again but sometime need to open and close the door a few times then it work whenever change battery.
In about 13 years of using eneloops daily (I have over 100 of them) I have never had one leak on me. Yet the odd piece of electronics with bundled Duracells or whatever, I have experienced more than one leak with the batteries, despite only ever using disposables when they are irresponsibly bundled with electronics.

I just don't bother to even use the disposables now except in items I really don't care about and hobby' mucking-about' to deplete them before disposal.
 
Thank you guys for the information. I sand off the surface rusty contact and solder some lead on it and it work again but sometime need to open and close the door a few times then it work whenever change battery.
In about 13 years of using eneloops daily (I have over 100 of them) I have never had one leak on me. Yet the odd piece of electronics with bundled Duracells or whatever, I have experienced more than one leak with the batteries, despite only ever using disposables when they are irresponsibly bundled with electronics.

I just don't bother to even use the disposables now except in items I really don't care about and hobby' mucking-about' to deplete them before disposal.
I've finally gotten rid of all my Alkaline batteries. I experienced too many leaking cells damaging electrical goodies. I use Eneloops exclusively, even buying "D" cell adapters that take three AA batteries and "C" adapters that take four AAA cells.

This was also a big plus after Hurricane Harvey when we lost power for three days. I kept swapping out battery sets daily and charging them with my car adapter.
 

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