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Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 8
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, November 21, 2007 - 01:21 pm: | 
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I paid £10 for this A1 in pretty good cosmetic condition, but with a scratched/fungoid lens (FDn/50/1.4). A decent battery in it gets the display going except with the lens in 'A' setting; furthermore and also too, as our old History master used to say, the display is all minus the top bars of the digits. Thomas Tomosy suggests working the AE button to de-oxidise the switch: I've done this, even holding its shaft in angled tweezers and rotating as well as pushing (shades of the old RAF song 'I put my finger in the Woodpecker's hole...'!)- 'Nowt doin'.' What now? Bung it on eBay as a 'Spares or Repair job?.
FJRO |
Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 11
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2007 - 12:02 pm: |
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... still no ideas, anyone..? Anyone...? (anyone out there...? ..at all...?)
FJRO |
Glenn
Tinkerer
Username: Glenn
Post Number: 241
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2007 - 08:02 pm: |
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Without examining the patient, a diagnosis is nigh impossible! Personally I would sell the thing, or if the cosmetics are really good - transfer all the bits onto a scruffy but working body - thus getting a tidy looking user. |
Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 12
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 19, 2007 - 10:19 am: |
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Thank you Glenn: going back to the Manual, I see that this happens if you set the camera for a stop-down mode shot, fail to press the button, and return the stop-down slide. The remedy, when the eeee ee message appears, it to slide the multi-exposure lever all the way to the left... Not only does this not clear the error-message, but there appears to be no difference between the single-exposure and multi-exposure settings: the film-sprockets are still firmly engaged! |
Loosecanon
Tinkerer
Username: Loosecanon
Post Number: 16
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 25, 2007 - 08:54 pm: |
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You don't want the film sproket to move when doing a double exposure, you just want to cock the shutter. I have an A-1 with exactly the same CPU problem so, I use it as a paperweight. |
Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 13
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 08:30 am: |
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Thank you, Loosecanon: but for multi-exposure, you'll want the sprocket to 'free-wheel', won't you? On mine, wherever the me-lever is, the sprocket turns as you cock the shutter.
I'm now wading through 257 pages of downloaded Repair-manual...
FJRO |
Glenn
Tinkerer
Username: Glenn
Post Number: 246
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 06:38 pm: |
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Francis,
You have not indicated how your A1 is exactly malfunctioning. Your last post would seem to indicate that the shutter is not jammed - ie you can fire and recock the shutter at will. Obviously it seems that the multi exposure/sprocket release mechanism is faulty/broken.
If you have the proper repair manual, you should find a trouble shooting section - both for electronic and MECHANICAL malfunctions. Try and narrow down the fault by using the trouble shooting charts. |
Dgillette4
Tinkerer
Username: Dgillette4
Post Number: 134
Registered: 04-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 26, 2007 - 07:32 pm: |
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question: Is the mirror down and viewfinder clear? also with a fresh battery and clean contacts it should work. If not tension shutter if it moves hold shutter release button down while turning top dial( shutter and program dial). There is one problem I came across and that is oxidized switch contacts on the shutter. The one I saw I carefully moved the curtain with my finter tip. It then released. There is one thing you can do to check electronics and that is to measure the battery voltage while moving all the dials and release. Does the voltage drop below 6 volts? I also had some new defective batteries. Let me know if this helps. Don |
Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 14
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 27, 2007 - 04:57 am: |
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Dear Glenn,
It seems to be working fine in 'M'mode - but for those missing top segments in the LCD-display; with the lens set to 'A' mode, once the shutter is cocked, is when it refuses to do anything: I'll look up the repair/service manual (reprints, I think, from 'Camera Craftsman?).
Don, the shutter is down, viewfinder clear: I'll try checking the voltage.
Many thanks to all: what an amazing place this is!
FJRO |
Francis_otto
Tinkerer
Username: Francis_otto
Post Number: 17
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 01, 2008 - 05:09 am: |
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... I should have said, 'the mirror is down'. I've now bought and downloaded the correct manual:it looks as if the setting of the multi-exposure lever is wrong, possibly the whole ME mechanism damaged; I think this means too extensive a dismantling operation for me to attempt a cure.
FJRO |
Glenn
Tinkerer
Username: Glenn
Post Number: 250
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 01, 2008 - 04:35 pm: |
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If you feel that you can remove the top cover, then go ahead and remove all the required bits. You will then be able to check the working of the multiple exposure lever and mechanism that is just under the wind-on lever. I have never come across a damaged ME mechanism, but have seen badly reassembled A1s which had jammed ME levers.
As you surmise, the servicing of the wind-on and ME mechanism does require a 'deep' stripdown. |
