6.2v battery with Pentax 67?

Frank Dean,  Blacksmith

A
Frank Dean, Blacksmith

  • 8
  • 5
  • 73
Woman wearing shades.

Woman wearing shades.

  • 1
  • 1
  • 80
Curved Wall

A
Curved Wall

  • 6
  • 0
  • 92
Crossing beams

A
Crossing beams

  • 10
  • 1
  • 115
Shadow 2

A
Shadow 2

  • 5
  • 1
  • 86

Recent Classifieds

Forum statistics

Threads
198,842
Messages
2,781,732
Members
99,725
Latest member
saint_otrott
Recent bookmarks
0

batwister

Member
Joined
Sep 4, 2010
Messages
913
Location
Midlands, UK
Format
Medium Format
I'm (still) trying to figure out why the mirror sticks on my Pentax 67, which I'd sent off to Asahi Photo LTD in London and then again when the problem persisted. The invoice states 'Mirror box/shutter overhaul' and I find it perplexing that the problem wasn't fixed. I was told on the phone that he'd ran several rolls of film through the camera (ten I think he said - I'm sure dummy rolls) and the mirror hadn't stuck for him. For me, it sticks almost without exception on the first frame, then randomly, usually at least twice more throughout a roll.

Something that I'd thought nothing of until now is that I'm using Energizer 544 Silver Oxide 6.2v batteries. Could this .2v be keeping the mirror up? The mirror is released eventually, after turning the speed dial several times, but released straight away when taking the battery out. Most threads online only list 6v batteries for the 67, so I'm wondering if that tiny bit of extra voltage is holding the mirror in place. I don't know the first thing about electronics, but when I bought the batteries I'd assumed an extra .2v would be negligible, but perhaps this is only the case with certain devices/cameras...

However, as I'd left the battery in when sending the camera for repair, it seems strange that he would take it out and use his own. I still don't understand why the mirror hadn't stuck for him.
 

Chan Tran

Subscriber
Joined
May 10, 2006
Messages
6,817
Location
Sachse, TX
Format
35mm
I doubt that battery voltage has anything to do with the problem. Battery that is rated at 6V would generally put out a little bit more than 6V when fresh any way.
 

MFstooges

Member
Joined
Feb 10, 2010
Messages
955
Format
35mm
I would try another battery and clean the contact if I were you.
 
Joined
Dec 13, 2010
Messages
486
Location
Everett, WA
Format
Large Format
I'm using a Varta V28PX 6.2v battery in mine. If you press the battery check button and the light goes on, then the battery is fine.
 

sbjornda

Member
Joined
Sep 9, 2011
Messages
22
Location
Canada
Format
Multi Format
Shutter sticking too?

Is the shutter sticking open too, or is it just the mirror?
 
OP
OP

batwister

Member
Joined
Sep 4, 2010
Messages
913
Location
Midlands, UK
Format
Medium Format
Both the shutter and mirror stay up. The frames are 'lost' due to overexposure.

I've sent an email to Eric Hendrickson who told me to clean the release selenoid. I'd like to open up the camera myself - the quandary has become irritating and I feel like a helpless housewife with a broken hoover. If anyone could advise about taking the 67 apart and, since I'm expecting a whole universe of mechanisms in there, where exactly the selenoid is?
 

AgX

Member
Joined
Apr 5, 2007
Messages
29,973
Location
Germany
Format
Multi Format
From what you just said I conclude that it is no good idea to attempt to repair it yourself.
Even having quite some expertise on fine-mechanics did not save me from spoiling some things. My advice is to give it to a repair shop. I understand though that with your camera twice having been at a repair shop in vain does not encourage you to try that again.
 

sbjornda

Member
Joined
Sep 9, 2011
Messages
22
Location
Canada
Format
Multi Format
Yes, from what I've read the release solenoid may be the problem. It may need to be degaussed (demagnetized). Best done by an expert.
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom