M9 electrical whine
Old 01-28-2017   #1
nobbylon
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M9 electrical whine

This may sound strange but when my M9 is switched on it has an electrical whistle or whine, constant in nature coming from under the top plate in the middle! Does anyone else have this? The camera performs beautifully and has only 8500 clicks. It had a new, old style sensor 18 months ago.
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Old 01-28-2017   #2
coelacanth
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I don't think I remember hearing something like that when I had M9 and its variants. I was even younger! (usually that whine sound is more audible to younger eardrums)
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Old 01-28-2017   #3
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My M8s and M9 had the same issue. I don't think there is anything wrong with your camera. Probably just some of the electronics making sound.

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Old 01-28-2017   #4
Nigel Meaby
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Don't worry John, a good whine will hopefully improve with age!
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Old 01-28-2017   #5
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thanks for the replies lads. As I said, in use no issues.
Nigel, I doubt it, nothing else has!!!
I cleaned the sensor yesterday and in the process of calibrating batteries as I'm off on a trip to Thailand, Cambodia and Vietnam for February. I'm done with this freezing weather!
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Old 01-28-2017   #6
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Have a great trip! I'm most likely off to Vietnam in March. Look forward to seeing your photos
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Old 01-28-2017   #7
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thx, I'm doing my usual 7 day Similan diving then going on a walk about. I'm only taking the M9 with your old Biogon-C and a gopro for in the water
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Old 01-28-2017   #8
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I remember to google it. M9 does it. My M-E does it.
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Old 01-28-2017   #9
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thank you, I'm not going to worry now
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Old 01-28-2017   #10
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Had an M9 for two years. Never heard such a thing.
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Old 01-28-2017   #11
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My M-E never made a sound unless I took a photo. Then it sounded like a Polaroid SX-70
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Old 01-28-2017   #12
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My M-E had a faint whine that I detected from time to time. It seemed liked it was coming from the exact location you describe. The noise was not present all the time. It seemed to come and go, Never had an issue with the camera related to this.
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Old 01-28-2017   #13
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It's a srange one as I just dropped in a fully charged battery and the sound is no longer there!
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Old 01-29-2017   #14
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I have handled only M8 and M9. They both do beep at a high frequency. The M8 sound is higher and the beeps are longer. Duration of the sound is like the M8 is stuck on 'O' and M9 on 'S' communicating back to Germany.

It's not a disturbing sound and you need to be in quiet place to hear it. Some people cannot hear such a high-frequency noise. The Olympus OM-D EM-5 that I had for a while was a bit of a different animal. I could often hear its whirring across the room. In actual use I however seldom noticed the sound with the camera to my eye due to environmental sounds and handling noise. And some owners didn't notice that either under any circumstances.

Back in the days of older CRT TVs, the 15625 Hz (PAL/SECAM) or 15734 Hz (NTSC) noise would often drive me nuts. Getting a 100-Hz TV was a huge relief.
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Old 01-29-2017   #15
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Mine does make a very quiet hum.
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Old 01-29-2017   #16
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It's a DC-DC converter, using an oscillator to convert one DC voltage into another. Various circuits in the Camera require voltages different from what the battery itself provides. The noise is from components vibrating to the frequency of the oscillator.

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Old 01-29-2017   #17
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Quote:
Originally Posted by JoeV View Post
It's a DC-DC converter, using an oscillator to convert one DC voltage into another. Various circuits in the Camera require voltages different from what the battery itself provides. The noise is from components vibrating to the frequency of the oscillator.

~Joe
Could that be why it doesn't do it with a fully charged battery? Thanks for the explanation. I seem to remember an F3 I had did it also at times.
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