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Hi
Noticed this week that my CM9000 based system has developed a noticeable hum; noticable in that it is heard through the wall in my sons room next door to the closet where it is installed! â˹ï¸Â
Any ideas guys. Is the transformer known to start humming after a few years etc?
Julian
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It is not known to hum after a few years, but anytng can become faulty. Or it may be resonant with some other low freq devceHow old s it?are you sure it is due to the transformer. Did you try turniong off the mains and let it run on battery to se if the hum is still there?
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Yeah I tuned off the mains and the hum went so to me that points at the transformer. Are these still available to purchase?
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Please Check if Laser have any. These are heavy and expesive to ship overseasYou may be able to find a similar transfor in Farnell 15 to 16VDC output 2.5A (40VA)
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Im sure that you can get the transformers from Laser.com, ps have you got any other powered devices on that electrical circuit when you powered it down
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Hello Juwi,
i\'ve swapped my transformer with a new one from Laser some years ago.
Mine was not humming, but i started to have warnings for low battery.
I suggest you to buy 1 or 2 of them as spare parts (i bought 3 of them, because i have 2 SEM as well), because your CM9000 will last for decades, and have spare parts is a good idea, until you find it.
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Thanks, doesnt appear that Laser have any stock.
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If you want to buy one, we still have some available, but the shipping would cost more. Send an email if you need
