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Minolta 800si will not power up

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mtb View Drop Down
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Topic: Minolta 800si will not power up
    Posted: 25 March 2020 at 18:50
Hi Folks,

I bought a Mint Condition 800si last year with a Vertical Grip from someone in Japan.

After buying a new 2CR5 battery to check that everything was functioning, I removed the battery and put it and the camera away in the new Shoulder/Waist pouch I bought for it.

Yesterday, for the first time since then (about May last year), I pulled the camera out to check it. I put the battery in but the camera would not power up.

I recharged the AA batteries (NiMH 1.2V HR6 2700mAh) and connected the Vertical Grip but it still wouldn't power up.

This morning I bought 4 Panasonic Extra Duration 1.5V AA batteries and put those in the Vertical Grip. It still wouldn't power up.

Does anyone know what the problem and solution are?

Thanks!!
 



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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 18:57
Might be worth checking the contacts are clean in the battery compartment of the camera .
Use a pencil with a rubber on the end and see how you get on .
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 19:23
Originally posted by neilt3 neilt3 wrote:

Might be worth checking the contacts are clean in the battery compartment of the camera .
Use a pencil with a rubber on the end and see how you get on .


Hi Neil,

I will to find such a pencil later but will any rubber residue be left behind that could interfere with the contact surface?

I will check again a little later but a cursory glance inside did not indicate any contamination.

Thanks!
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Bob J View Drop Down
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Post Options Post Options   Quote Bob J Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 20:33
Do you have another camera you could try the 2CR5 battery in? (just to make sure the battery is not at fault).

Are you getting anything from the camera? An empty battery should still show an LCD outline of an empty battery from what I remember.

It may be there is an internal battery that may have discharged over time - I missed if you had tried leaving the battery in place overnight to see if it would recharge it...

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vitor View Drop Down
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Post Options Post Options   Quote vitor Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 20:57
Try the battery in the camera and skip the grip.
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 21:10
Originally posted by Bob J Bob J wrote:

Do you have another camera you could try the 2CR5 battery in? (just to make sure the battery is not at fault).

Are you getting anything from the camera? An empty battery should still show an LCD outline of an empty battery from what I remember.

It may be there is an internal battery that may have discharged over time - I missed if you had tried leaving the battery in place overnight to see if it would recharge it...


Hi Bob,

Mmmmm, internal battery eh? I have never seen any mention of that before.

Ok, I will try your suggestion. Will report back tomorrow?

A 2CR5 gives 6V.

So, should rechargeable AA batteries be rated at 1.5V each for when using the Vertical Grip?

Thanks!
 



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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 22:00
Originally posted by mtb mtb wrote:

Originally posted by neilt3 neilt3 wrote:

Might be worth checking the contacts are clean in the battery compartment of the camera .
Use a pencil with a rubber on the end and see how you get on .


Hi Neil,

I will to find such a pencil later but will any rubber residue be left behind that could interfere with the contact surface?

I will check again a little later but a cursory glance inside did not indicate any contamination.

Thanks!


The rubber is coarse on a pencil , don't worry about residue .
Looking in the compartment won't help .
Any tarnishing causes a bad connection , but not necessarily visible .

Clean it off and put a new battery straight in there and see what happens .

If your getting 6v on a meter , that might be flat .
Same as a 12v car battery , 12v is flat , 12.6v or so is minimum .
Your 6v should be higher .
Same as a 1.5v battery is about 1.6v .

The grip might be the problem as if it's had batteries left in it a long time , the connection for the wires sometimes corrode .

You need to start with just the camera before you try getting the grip to work .

First things first , get a new battery and clean the contacts in the camera body .

I use Sanyo Eneloops in the grips on all my cameras and they work just fine .
Each battery is rated at 1.2v .
But you need to check the camera works without the grip first .
Either way it seems the power isn't getting to the camera .

Edited by neilt3 - 25 March 2020 at 22:04
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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mtb View Drop Down
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 22:14
Originally posted by neilt3 neilt3 wrote:


The rubber is coarse on a pencil , don't worry about residue .
Looking in the compartment won't help .
Any tarnishing causes a bad connection , but not necessarily visible .

Clean it off and put a new battery straight in there and see what happens .

If your getting 6v on a meter , that might be flat .
Same as a 12v car battery , 12v is flat , 12.6v or so is minimum .
Your 6v should be higher .
Same as a 1.5v battery is about 1.6v .

The grip might be the problem as if it's had batteries left in it a long time , the connection for the wires sometimes corrode .

You need to start with just the camera before you try getting the grip to work .

First things first , get a new battery and clean the contacts in the camera body .

I use Sanyo Eneloops in the grips on all my cameras and they work just fine .
Each battery is rated at 1.2v .
But you need to check the camera works without the grip first .
Either way it seems the power isn't getting to the camera .


Hi Neil,

Batteries were not stored in the Grip and all of its contacts appear very clean.

The AA batteries that I have are POWEREX.

I need a multi-meter to test the 2CR5 or find someone who has a multi-meter. I would not be able to source another 2CR5 until next week in the closest major city after the stupid lockdown has finished.

Will keep you all posted.

Thanks!!
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 22:29
If you haven't got a meter to check the battery , you can still check if the grip works with it off the camera with a bulb out of a torch or your car , and a piece of wire .

Put your fully charged batteries in the grip , on the terminals that go into the camera place a wire on one with the other end wrapped around one part of the bulb .
Hold the other part of the bulb onto the other terminal and see if it lights up .

If not , you know the cameras not getting power .
Back to the contacts in the camera if it does light up.

Have you tried the battery directly in the camera with the grip off ?
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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mtb View Drop Down
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Posted: 25 March 2020 at 23:12
Originally posted by neilt3 neilt3 wrote:

Have you tried the battery directly in the camera with the grip off ?


Hi Neil,

As Bob suggested I have the 2CR5 battery in the Camera and I will leave it sitting overnight to see what happens tomorrow.

Thanks!
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Post Options Post Options   Quote mtb Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2020 at 23:03
Hi/Ola Everyone,

And the prize goes to Bob.

It looks like it takes about 24 hours to take effect.

This morning there was still nothing displayed on the LCD panel when I tried to Power Up the camera. However, about an hour ago it fired up (powered up).

Vertical Grip (VG) and its batteries are fine too and I was able to power up the camera with that as well.

Last night I found an old torch and pulled the bulb out to try Neilīs suggestion with the VG. I should have checked the voltage first. One bright flash of light with the VG and the bulb was toasted (burnt out). Ooops!

So, what would be a good measure to take to prevent this from occurring in the future? Put the battery in the camera once a month for 24 hours?

Thanks for your input everyone!
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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2020 at 00:18
I've got most of the Minolta AF film cameras ( and a fair few manual focus ones ) and have never had a problem with them switching on after a period of inactivity stored with no battery in .
They've always come to life as soon as batteries were installed .
Even after a few years .

I'm not convinced that it wasn't dirty / tarnished contacts that was the problem .
Swapping and changing batteries and the grip might have rubbed thing clean .

Anyway , it's good your back up and running .

How to prevent it ?
Use the camera !
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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