Re: KX dead meter

2007-07-18 Thread David J Brooks
On 7/15/07, Peter Lacus <[EMAIL PROTECTED]> wrote:
> Bob,
>
> > The KX doesn't turn on the meter until you pull the winder lever into
> > the standoff position.  Pull it out just a bit and have another go at
> > it.  (Eric @ PentaxRepairs pointed this out to me one day when I asked
> > him to repair my KX meter.)  ;-)
>
> thank you very much, it worked! :-)
>

> :-)) yet I do like when things are working properly.

And you still stay on this list.:-)

Dave
>
> Cheers,
>
> Peter
>
> --
> PDML Pentax-Discuss Mail List
> PDML@pdml.net
> http://pdml.net/mailman/listinfo/pdml_pdml.net
>


-- 
Equine Photography
www.caughtinmotion.com
http://brooksinthecountry.blogspot.com/
Ontario Canada

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread Peter Lacus
Bob,

> The KX doesn't turn on the meter until you pull the winder lever into
> the standoff position.  Pull it out just a bit and have another go at
> it.  (Eric @ PentaxRepairs pointed this out to me one day when I asked
> him to repair my KX meter.)  ;-)

thank you very much, it worked! :-)

Usually I can live without metering especially when shooting negatives 
(which can handle 1-3 stops of accidental overexposure without problems 
:-)) yet I do like when things are working properly.

Cheers,

Peter

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread Mark Roberts
P. J. Alling wrote:

>All the K bodies, (KM, KX K2, K1000), had meter needles.  They were the 
>last series of Pentax cameras to use mechanical metering readouts.

Yep. The KM and K1000 had centering-type needles and CdS meter cells; 
the KX and K2 had needles that went all the way from the top of the 
viewfinder to the bottom (and a pointer that indicated where the 
shutter speed was set) with Silicon photodiode meter cells.


-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread Bob Sullivan
Peter,
The KX doesn't turn on the meter until you pull the winder lever into
the standoff position.  Pull it out just a bit and have another go at
it.  (Eric @ PentaxRepairs pointed this out to me one day when I asked
him to repair my KX meter.)  ;-)
Regards, Bob S.

On 7/15/07, Peter Lacus <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I acquired a nice KX recently to complete my other xX series cameras (MX
> and LX) and I found that the needle in the viewfinder is not moving and
> is always pointing upwards. However if I press the battery check button
> it moves down (at 1/30s setting IIRC) so hopefully it's not dead
> completely. Any ideas what could be wrong?
>
> Cheers,
>
> Peter
>
> --
> PDML Pentax-Discuss Mail List
> PDML@pdml.net
> http://pdml.net/mailman/listinfo/pdml_pdml.net
>

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread P. J. Alling
All the K bodies, (KM, KX K2, K1000), had meter needles.  They were the 
last series of Pentax cameras to use mechanical metering readouts.

graywolf wrote:
> I thought the KX had LED's for the meter, and The K-1000 and KM had a needle.
>
> graywolf
> http://www.graywolfphoto.com
> http://webpages.charter.net/graywolf
> "Idiot Proof" <==> "Expert Proof"
> ---
>
>
> Peter Lacus wrote:
>   
>> Hi,
>>
>> I acquired a nice KX recently to complete my other xX series cameras (MX 
>> and LX) and I found that the needle in the viewfinder is not moving and 
>> is always pointing upwards. However if I press the battery check button 
>> it moves down (at 1/30s setting IIRC) so hopefully it's not dead 
>> completely. Any ideas what could be wrong?
>>
>> Cheers,
>>
>> Peter
>>
>> 
>
>   


-- 
All dogs have four legs; my cat has four legs. Therefore, my cat is a dog.


-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread graywolf
I thought the KX had LED's for the meter, and The K-1000 and KM had a needle.

graywolf
http://www.graywolfphoto.com
http://webpages.charter.net/graywolf
"Idiot Proof" <==> "Expert Proof"
---


Peter Lacus wrote:
> Hi,
> 
> I acquired a nice KX recently to complete my other xX series cameras (MX 
> and LX) and I found that the needle in the viewfinder is not moving and 
> is always pointing upwards. However if I press the battery check button 
> it moves down (at 1/30s setting IIRC) so hopefully it's not dead 
> completely. Any ideas what could be wrong?
> 
> Cheers,
> 
> Peter
> 

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread Peter Lacus
Mark,

> The meter circuitry seems to be the weak point of the KX: I've been 
> through several with dead meters.
> 
> I never completed troubleshooting to 100% certainty, but it seems very 
> likely that the culprit is the integrated circuit that comprises the 
> most of the meter electronics. I never determined exactly what the chip 

thank you for your reply. It's probably not worth invest more time in it 
then - who needs damn meter anyway... ;-)

Cheers,

Peter

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


Re: KX dead meter

2007-07-15 Thread Mark Roberts
Peter Lacus wrote:

>I acquired a nice KX recently to complete my other xX series cameras 
(MX 
>and LX) and I found that the needle in the viewfinder is not moving and 
>is always pointing upwards. However if I press the battery check button 
>it moves down (at 1/30s setting IIRC) so hopefully it's not dead 
>completely. Any ideas what could be wrong?

The meter circuitry seems to be the weak point of the KX: I've been 
through several with dead meters.

I never completed troubleshooting to 100% certainty, but it seems very 
likely that the culprit is the integrated circuit that comprises the 
most of the meter electronics. I never determined exactly what the chip 
is but it's an 8-pin SOIC and most likely is a dual op-amp or 
comparator, so if you could determine the pinout, finding a suitable 
replacement shouldn't be too difficult (though soldering it onto the 
flexible "circuit board" might be another story).

No, I don't have a schematic diagram :(


-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net


KX dead meter

2007-07-15 Thread Peter Lacus
Hi,

I acquired a nice KX recently to complete my other xX series cameras (MX 
and LX) and I found that the needle in the viewfinder is not moving and 
is always pointing upwards. However if I press the battery check button 
it moves down (at 1/30s setting IIRC) so hopefully it's not dead 
completely. Any ideas what could be wrong?

Cheers,

Peter

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net