Go Back   Rangefinderforum.com > Cameras / Gear / Photography > Gearhead Delights > Repair / Camera Care

Repair / Camera Care This is a good place to discuss the care and repair of your photo gear. You can share Do-It-Yourself repair and maintenance, as well as your recommendations for pro repairs. This new forum was created 4/1/07. PLEASE title your thread wisely, so others searching for a certain make of camera or repair person can find your thread easily!

Reply
 
Thread Tools Search this Thread Display Modes

Minolta XD7 Incorrect A-priority LED info
Old 04-28-2019   #1
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
Minolta XD7 Incorrect A-priority LED info

Hi Everyone,

Finally got my hands on a Minolta XD7.
Almost everything works fine, manual mode, shutter speed, A and S mode.

Except that when in A mode, inside the viewfinder, the LED keeps in the 15 - 1 range and won't go higher than that, won't register when I change aperture (stays at the same value). But when I fire, it fires at the correct speed (if I change aperture the LED won't move but the effective correct speed will be used).

I don't have that issue in S mode, the LED goes all the way up when I move the camera, indicated each possible f stop.

I really have no clue what's going on. But I need to be able to use A mode.

Ideas ? :/
  Reply With Quote

Old 04-28-2019   #2
retinax
Registered User
 
retinax is offline
Join Date: Aug 2015
Posts: 826
Mine had something similar, although I don't recall if it also affected the shutter speeds actually used. In any case I managed to cure it by cleaning and bending into shape the contacts of the variable resistor around the lens mount. It's not too hard to access once you've taken off the lens mount, although getting the lens mount back on is a PITA because of that spring, you'll see... You will need to make sure that each of the metal thingies that slide along the resistor track (I'll just name it that) when the aperture is changed only touch their respective track, and do that consistently.
  Reply With Quote

Old 04-28-2019   #3
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
Alright. I've never opened a SLR before so this sounds kinda daunting. I guess I can find a repair manual to try to understand which part you're talking about. But I'd really love to have it working.
  Reply With Quote

Old 04-28-2019   #4
retinax
Registered User
 
retinax is offline
Join Date: Aug 2015
Posts: 826
You just need to remove the four screws that hold the lens mounting flange and you'll see what I'm talking about.
  Reply With Quote

Old 04-28-2019   #5
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
Alright, I removed the lense, and fiddle around the lens mount, I'm not sure but I think I unlocked a pin (lots of dust) and it's now working (?!?).
I guess the whole things needs a bit of dusting and some light alcohol rubbing.

One last thing I don't get: I can't see my aperture in the finder.
From what I understand it's juste a window that I have to clean?

(thanks for the help!)
  Reply With Quote

Old 04-28-2019   #6
wolves3012
Registered User
 
wolves3012's Avatar
 
wolves3012 is offline
Join Date: Sep 2006
Location: Wolverhampton, UK
Age: 62
Posts: 2,808
Quote:
Originally Posted by LeReilly View Post
One last thing I don't get: I can't see my aperture in the finder.
From what I understand it's juste a window that I have to clean?

(thanks for the help!)
The aperture window is an 'optical periscope' and the viewing lens sits under the overhang of the pentaprism housing. Hold the camera upside down and look just above the lens mount. Are you sure it's not an XD-5, since that didn't have the periscope? Hard to believe the window would be so dirty as to block the display completely but it might just be that. Enjoy the camera anyway, they are excellent tools.
__________________
Zorki: 1e (x2), 2C, 3M, 4, 4K, 5, 6
FED: NKVD, 1g, 2e
Kiev 4, 4A
Leica IIIC
Yashica Minister III
Zenith C, Zenit C, Zenit E
Minolta XG-M, XD-5
Nikon P50
Panasonic Lumix G2, 14-42 Kit lens + 45-150mm

"The way to see by faith is to shut the eye of reason." - Benjamin Franklin
  Reply With Quote

Old 04-28-2019   #7
wolves3012
Registered User
 
wolves3012's Avatar
 
wolves3012 is offline
Join Date: Sep 2006
Location: Wolverhampton, UK
Age: 62
Posts: 2,808
Quote:
Originally Posted by LeReilly View Post
Alright, I removed the lense, and fiddle around the lens mount, I'm not sure but I think I unlocked a pin (lots of dust) and it's now working (?!?).
I guess the whole things needs a bit of dusting and some light alcohol rubbing.

(thanks for the help!)
Just had a thought - you said you think you unlocked a pin. The MD lenses have a lock that holds the aperture on minimum setting and that should normally be used for 'S' mode. If you set the aperture to less than minimum, the camera cannot use the full range of apertures, only the ones up to what you set and wider. Sometimes called 'abbreviated shutter-priority mode'. That could explain your original problem of not having the full range of LEDs working.

EDIT: I've also realised that that wasn't your original problem! Please ignore.
__________________
Zorki: 1e (x2), 2C, 3M, 4, 4K, 5, 6
FED: NKVD, 1g, 2e
Kiev 4, 4A
Leica IIIC
Yashica Minister III
Zenith C, Zenit C, Zenit E
Minolta XG-M, XD-5
Nikon P50
Panasonic Lumix G2, 14-42 Kit lens + 45-150mm

"The way to see by faith is to shut the eye of reason." - Benjamin Franklin
  Reply With Quote

Old 04-28-2019   #8
retinax
Registered User
 
retinax is offline
Join Date: Aug 2015
Posts: 826
Quote:
Originally Posted by LeReilly View Post
Alright, I removed the lense, and fiddle around the lens mount, I'm not sure but I think I unlocked a pin (lots of dust) and it's now working (?!?).
I guess the whole things needs a bit of dusting and some light alcohol rubbing.

One last thing I don't get: I can't see my aperture in the finder.
From what I understand it's juste a window that I have to clean?

(thanks for the help!)
Congrats if this was it, if not, the repair I suggested is very doable for a beginner who doesn't have two left hands.
Regarding seeing the aperture in the finder, are you sure you didn't have a finger between the little window and the aperture scale on the lens?
I've learned to abstain from alcohol for external camera use, some paints and plastics (acrylic!) don't like it.
  Reply With Quote

Old 04-28-2019   #9
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
Alright, so, seems the LED are still working fine. Guess that was it.

But regarding the window, it's fine :



My guess is that the small panel that is supposed to open that small window when I switch mode is stuck in the off position. Could that be it? If yes, is it worth fixing?

(next and final step would be replacing the leather which has shrunk dramaticaly)
  Reply With Quote

Old 04-28-2019   #10
retinax
Registered User
 
retinax is offline
Join Date: Aug 2015
Posts: 826
Quote:
Originally Posted by LeReilly View Post
Alright, so, seems the LED are still working fine. Guess that was it.

But regarding the window, it's fine :

My guess is that the small panel that is supposed to open that small window when I switch mode is stuck in the off position. Could that be it? If yes, is it worth fixing?

(next and final step would be replacing the leather which has shrunk dramaticaly)
The window is open in every mode on mine, the shutter speed readout next to it isn't. In your picture I can't see if the window glass is actually there, it's supposed to be nearly flush with the body. In any case I wouldn't worry too much about that, the camera is very usable without aperture readout in the finder.
  Reply With Quote

Old 04-28-2019   #11
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
Alright now S mode is acting up. Only the top and bottom LED arrows are lighting up.
And A mode still works fine.

Guess I'll have to open. Everything's weird and I need to trust the camera to use it.
  Reply With Quote

Old 04-28-2019   #12
LeReilly
Registered User
 
LeReilly is offline
Join Date: Jul 2018
Posts: 9
After further testing, seems the minimum aperture lever is at fault. When I move it a little and keep it that way with my fingers, the LEDS are lighting back on (tried using a MD lense that interacts with it at f22 but still not working either).

Unfortunately, and even with 70 precision tools head, for the life of me I can't unscrew the four screws holding the lense mount.

Maybe I'll have to make do with A mode. (or keep using my x700)
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 05:21.


vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.

All content on this site is Copyright Protected and owned by its respective owner. You may link to content on this site but you may not reproduce any of it in whole or part without written consent from its owner.