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12-15-2012, 07:01 AM   #1
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broken MZ-7?

Just registered have a similar prob with PentaxZX-7. found exact prob , no fix here it is I've just acquired an MZ-7 (ZX-7 in the US). When I install batteries (2 fresh CR2's) with no film, the LCD light turns on showing a film symbol and the number 6, and the camera makes a high-pitched whirring/buzzing sound for an extended period of time (going on 10 minutes as I write this). The portion of the camera closest to the lens release is warm to the touch. Also, the mirror does not lower to allow me to look through the lens (but the mirror moves freely when manually moved, so the assembly itself doesn't appear to be jammed).

12-15-2012, 10:46 AM   #2
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QuoteOriginally posted by crowns4u Quote
Just registered have a similar prob with PentaxZX-7. found exact prob , no fix here it is I've just acquired an MZ-7 (ZX-7 in the US). When I install batteries (2 fresh CR2's) with no film, the LCD light turns on showing a film symbol and the number 6, and the camera makes a high-pitched whirring/buzzing sound for an extended period of time (going on 10 minutes as I write this). The portion of the camera closest to the lens release is warm to the touch. Also, the mirror does not lower to allow me to look through the lens (but the mirror moves freely when manually moved, so the assembly itself doesn't appear to be jammed).
I believe that's an error code. You should probably get a new ZX-7 as those things aren't really repairable nowadays

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12-15-2012, 11:36 AM   #3
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QuoteOriginally posted by crowns4u Quote
Just registered have a similar prob with PentaxZX-7. found exact prob , no fix here it is I've just acquired an MZ-7 (ZX-7 in the US). When I install batteries (2 fresh CR2's) with no film, the LCD light turns on showing a film symbol and the number 6, and the camera makes a high-pitched whirring/buzzing sound for an extended period of time (going on 10 minutes as I write this). The portion of the camera closest to the lens release is warm to the touch. Also, the mirror does not lower to allow me to look through the lens (but the mirror moves freely when manually moved, so the assembly itself doesn't appear to be jammed).
Your MZ-7 most likely has a broken mirror motor gear. It is a common problem that nearly all the MZ/ZX cameras share due to a plastic gear that breaks.
There is a thread somewhere here that shows a step by step DIY repair on a ZX-5n (I think).
You can send it out for repairs and the motor and broken gear will be replaced with a new motor with a brass gear but the repair costs over $100 so it may not be worth it to you.
An excellent condition MZ-7 is worth anywhere from $25 to $50 (maybe) so replacing it is definitely cheaper but you may still run into the gear problem.
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