My avr 3806 has an annoying buzz (intermittent but persistent) coming from what sounds like the power transformer. Does this mean the transformer is failing and likely to need replacing/repairing?
That is a very safe assumption.
SOURCE: Buzz or hum
My guess would be +and -12v supply to preamp opamps has ripple. (drycaps or bad solder). I may be able to get you a pdf service manual if needed. [email protected]
SOURCE: Front door hinge of my
NEW ZEALAND
Audio Products Group Pty Ltd.
13 Wall Place,
Tawa,
Wellington,
NEW ZEALAND
TEL: 64 (04) 2320 030
FAX: 64 (04) 2325 984from denon.com website!
solutiondoct
SOURCE: denon avr 1802 died after lightning strike
I hate to be the bearer f bad news but it has been my experience , anything hit by lightening stays hit permanantly ..
You may find a few components on the quick scan of the circuit burnt or damaged , but you can guarantee that other components have been fried also .. It does enough damage to any electrical system when you get a 300v spike on the mains .. so imagine what approx 1/2 a million volts will do to a 12 volt radio ?? dont waste your money call your insuarnce company and claim for it ?. ... Regards vortash
SOURCE: I just need to find a schematic for a Denon
Does this help?
http://www.usa.denon.com/avr3300_technotes.pdf
I also had a severe hum or buzz that was NOT a ground fault loop issue or any other such problem.
Hummed to the point that reading in the family room was annoying !
I took my amp to a Very Qualified shop and the technician simply insulated the transformer 40.00 usd
401 views
Usually answered in minutes!
×