Soundstream Technologies 705s owner manual Protection Circuitry, Troubleshooting, Problem, Cause

PROTECTION CIRCUITRY

Your Reference705s is protected against both overheating and short circuits by means of the following circuits:

∙Main power supply fuses (Maxi-fuse at 40 amps)

∙Smart Power Supply Thermal Rollback activating at 85°C.

∙A fail-safe thermal protection circuit activating at 95°C.

∙Self-resetting circuit breakers on channels 1,2,3 & 4 to protect against short circuits.

Your amplifier also incorporates an innovative Fault Diagnosis system that identifies a blown power supply fuse.

NOTE: If you experience blown main power supply fuse, DO NOT increase value beyond the 40 amp maxi-fuse! Doing so will void your warranty and may damage your amplifier.

TROUBLESHOOTING

PROBLEM	CAUSE
No sound and LED's are not lit	∙ no power or ground at amp
	∙ no remote turn-on signal
	∙ blown fuse near battery
Fault LED is lit	∙ amp power supply fuse is blown or missing
Repeatedly blown amp fuse, frequent activa-	∙ check speaker configuration, amp may be in
tion of Smart Power Supply Circuit	“High Power” mode, put amp into “High Current”
	mode if subwoofer load is less than 1 ohm (see
	p.8, “Setting High Power/High Current Switch”)
	∙ speaker or leads may be shorted
	∙ verify adequate amplifier ventilation
no sound from channels 3 & 4 with 2 chan-	∙ check input settings on bottom of amplifier—
nels of input	switch should be set to inputs “1 & 2”
Channel 1, 2, 3 or 4 experience intermittent	∙ circuit breakers on these channels are activat-
output	ing. Check for a possible short in the speaker
	wire or in the speaker itself
	∙ Verify the impedance of the load is at or above
	the rated minimum impedance for these chan-
	nels

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