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Opening a Corroded Battery Compartment on K1000

William Roberts , Jul 09, 2010; 04:07 p.m.

Hello, I just got a K1000 SE and some lenses. I was trying to put a new battery in the body, but it seems like the compartment is corroded shut. Rather than wrestling with it and messing up the body, is there any way to open it, maybe some cleaner or something that won't mess up the body?
Also, is there a source for the tiny screws that tighten up the focus ring on lenses?
Thanks for your help!!



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Charles Stobbs , Jul 09, 2010; 04:15 p.m.

How about removing the bottom plate, battery cap and all. Tht would allow you to acces it with different tools. And even buy a bottom plate in better ccondition.

Curt Saxton , Jul 09, 2010; 04:53 p.m.

Hi William,
Generally for corroded battery caps I set the camera upside down and either let a drop of Ronsonol lighter fluid or WD-40 drip around the cap and sit overnight. Usually helps.

Gabor Szabo , Jul 09, 2010; 05:00 p.m.

Unscrew the bottom plate like Charles recommended. Then, use some lemon juice or vinegar on a cotton swab to clean up the
battery spillage. Use penetrating lube like PB Blaster as a last resort.

Tom Cheshire , Jul 09, 2010; 08:25 p.m.

If the battery has been in there a long time it might have expanded a bit thus jamming the cover. In cases like that we have had to apply heat with a soldering iron to make the metal expand a bit or, if that didn't work, grind through the rest of the slot so a proper screw driver could be inserted and spin off the cap.

William Roberts , Jul 09, 2010; 08:41 p.m.

Thanks everyone for your help, I ended up taking off the bottom plate and using some cleaner to loosen up the battery cover. So now I have to get a battery and test the camera out... might have to sell one of my other cameras so I can keep this one......
PN is one of the most useful websites...

Ernest B. , Jul 09, 2010; 08:54 p.m.

Tom Cheshire , Jul 09, 2010; 08:25 p.m. wrote: "If the battery has been in there a long time it might have expanded a bit thus jamming the cover. In cases like that we have had to apply heat with a soldering iron to make the metal expand a bit..."

Tom, really?

I'm no expert, but I have seen many battery packages with a strong warning against tossing depleted batteries into a fire.

Heating the camera's battery cover (thus, the battery beneath it) with a soldering iron seems like a not-so-good idea.

Frank Schifano , Jul 10, 2010; 03:19 a.m.

There's heat, and then there's heat. Tom's talking about warming it up a little bit - just enough to get the metal to expand slightly. He's not talking about hitting it with a blow torch.

Jim Momary , Jul 10, 2010; 06:44 a.m.

Batteries usually 'explode' in a fire due to the boiling of the electrolyte and the issuance of steam. If the battery has leaked, it's probably all dry and when 'cooked', no steam just roasted cell is the probable result.

The typical electrolyte used in mercury batteries was either sodium or potassium hydroxide. Thus, using an acidic solution will aid in the dissolution of the 'hoarfrost'.

Leakage also plays havoc with copper wires. I've fixed some older rangefinders wherein the wires drew up the electrolyte (capillary action perhaps) from the battery holder and slowly had dissolved over time.

We all know we should remove batteries from stored equipment, but I dare say we seldom do. I'm guilty.

Ernest B. , Jul 10, 2010; 08:38 a.m.

Well, okay, Frank.

If the cover loosens before the battery explodes, a beginning repairman will know he hasn't warmed it too much.

On the other hand...


"It will explode, it has happened to me."

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