Emerson AV101 System no sound
it could be one of two things.... the first is that the speaker selector is set to OFF. the other thing (also the more expensive one) is that there is a problem with the amp, and you either have a problem with the offset voltage on the output of the amp, or that the idle current in one of the output stages is too high. normally, a protection circuit monitors the output stages for these two faults, and if there's no problem, your speaker relay clicks in within 30 seconds of turning on the power. if there's a problem, the relay never clicks in.
so first check your speaker selector. if it's done by "soft switching" (not a physical selector switch, but a microprocessor controlled relay) then you also could have a problem with the processor chip, or with the parameter storage memory (which sometimes uses a backup battery). sometimes the backup battery isn't a battery at all, but a very large (electrically, not physically) capacitor that keeps alive the parameter RAM. if the power is left off for more than 2 or 3 days, the capacitor will lose it's charge, and the stereo "loses it's mind". same thing if it's a dead backup battery. sometimes if the battery is marginal, you lose some settings, but not others or the settings get changed
on Jun 28, 2006