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need qinpu a3 schematic.
cant locate fault of safeguard protection monitoring what?
hence sole relay refuses to engage speakers.
replaced pair 6n3's and semiconductors (TO-92's, zeners, 7806, poweramp ic's twin), still no result.
blue twin led's keep winking forever, meaning fault is real.
thanks in advance.
cant locate fault of safeguard protection monitoring what?
hence sole relay refuses to engage speakers.
replaced pair 6n3's and semiconductors (TO-92's, zeners, 7806, poweramp ic's twin), still no result.
blue twin led's keep winking forever, meaning fault is real.
thanks in advance.