ok, i made some progress with repairs. Here's what i found out: in addition to my previous discoveries, i found two 0.47ohm/2w , and two 10ohm_1/4w resistors burnt, the was as unclejed provided info, (thanks uncle for info regarding open burnt resitors, newer knew about that
).....and one interesting thing i discovered, was that ac voltages safe-grounding (if thats the right term), is soldered to speakers output negative terminal, this is too something new to me
. But, i found those components destroyed, so is it wise to get the spare parts, as it seems this is repairable? or what you think?