Can said ONKYO TX-NR609 is in recent years low-end times generation amplifier market in the most common of a paragraph models, it to lower of price integrated has now standard configuration of all function, but this batch machine of quality everyone see, does is not some not satisfactory, small problem more, big problem also has, even has decoding Board fault of, so many customer are will its modified Qian level output Hou as decoding device using. Today and repaired the cases of Enbridge 609 upsets fault: Middle and right channel are obvious/audio muting.8sdservice manual download site
So-called static noise is static noise, that not play music of when Horn in of rustling sound, theory told again good of amplifier are has static noise, voice size depends on amplifier of quality, and entered output line of quality, and transmission distance, and work environment, many factors, but, household AV amplifier of static noise General in two or three meters outside is heard not to of, and each channel are should as, this Taiwan amplifier of fault is in the reset and right channel obviously strongly some, other channel in ear posted have is near only heard get, Sometimes reset channel noise will be more severe with Lindsey in sound.8sdservice manual download site
Amplifier of Hou level zoom circuit into two part, Qian half part of zoom Board is vertical loaded in radiator next to of, here we for called it promoted Board's, this Zhang Board next to has a group signal line plug, total 14 root, this is decoding out of seven group signal line, respectively gave Hou level zoom, oscilloscope MV document measurement here of signal no found noise, disconnect promoted Board Hou measurement entered output signal are no found noise, seems to repair promoted Board has. But it drives each set of plugs with 9 pins, only known positive and negative power supply and input signals that three, other features do not know, are not easy to separate tests, how to do it? Here I think was a good idea, will drive plate channel with no problem on plug removal, with an extended group of wires connected so that you can push plate on the power amplifier in Yanbian, had only one fault is connect to other channels to slowly repair, or drive shaft installed in a machine have no way of getting power measurement. Finally found much push transistor leakage after maintenance is complete, and the model is 2SC2300, after replace all Toshiba tube 2SC2383, channel muting is very small. This machine is purchased less than two years, and push the panels heat a large, visible design and quality are important factors influencing the incidence of failure

 2    1 2 Next Last