This panel consists of a single chip computer control, by a cable way over the bus with a circuit connection on the amplifier Board. This circuit block type is SM7346C-V2.0, this amplifier sounds digital processing chip to complete, also includes the volume. Taking into account the model "V2.0", it is estimated that the chip can be programmed, are of different versions. Are the same model, version, should be guaranteed to be swapped.w2hservice manual download site
w2hservice manual download site
After careful examination of circuit board revealed R203 resistance heating and P205 insurance seriously. Along the line search, found 42 to SM7346D-V2.0 and 13 feet, respectively, after putting two pins, voltage +11V and -11V, respectively, there is no doubt that the two pins are positive and negative Dianyuan power PIN, chip is corrupted. Using models disassemble IC replacement after amplifier that everything works.w2hservice manual download site
w2hservice manual download site
After overhaul, this article from Chengdu appliance repair http://www.cdjdwx.CN/collection of information more than one model with the AV amplifier, some performance for voice control, some performance for control panel features no longer found for SM7346D-V2.0 damage, immediately after the change back to normal.w2hservice manual download site