With the single there is noise. 7vaservice manual download site
 7vaservice manual download site
Fail when only one channel is faulty, when receiving TV signals of AV will fail, so the fault should be in the TV/AV switch circuit or circuit. 7vaservice manual download site
 7vaservice manual download site
Will the two speakers swaps, fault on the same track, IC2301 input signal with lead and IC2302 input signal exchange, failure occurs in another speaker, after his recovery. Will IC2101 (33 feet) and (34 feet) signal swaps, failure occurs in the original sound track, will IC2101 (40 feet) and (41 feet) signal swaps, failure occurs in the original sound track, which can determine fault in IC2101 (40 feet) (41 feet) after the IC2301, IC2302 between (1 foot), check for C2154 or C2151 bad, after the corresponding capacitance, failure to discharge. : always the same circuit of signal are interchangeable, breaking can be interchangeable, easy to determine fault location, easy maintenance and intuitive.7vaservice manual download site