Ampeg SVT-150H manual Troubleshooting, System Block Diagram, Or circuit breaker, Replace speakers

SVT-150H

Troubleshooting

In the unlikely event that you SVT-150H should stop working properly (or just stop working), take a few minutes to trou- bleshoot it before you call for service. You can save yourself a lot of time and sometimes money by doing it yourself, and often the cure for the problem is something quite simple.

NO SOUND

LEDs LIGHT

LEDs DON'T LIGHT

Check amp controls, check

Check AC outlet

for signal from bass

OUTLET OK

NO OUTLET

NO SOUND

SOUND OK

Check power cord,

Check house fusebox

Listen for hum

fuse, power switch

or circuit breaker

NO HUM

HUM

OK

Check speaker

Unplug bass,

touch tip of cable

Speaker OK

LOUD HUM

NO CHANGE

SOUND OK

Check inst. pickup

Replace cable

SOUND OK

NO CHANGE

SEE BELOW

	POOR SOUND
Check bass, cables
	POOR SOUND		SOUND OK
Check speaker(s)
SPEAKER(S) OK,		SPEAKER(S)
POOR SOUND		DEFECTIVE

Replace speaker(s)

POOR SOUND SOUND OK

SEE BELOW

If the problem isn’t covered above, or if the steps led you here, then contact your Ampeg dealer for service informa- tion. Also, you should refer your amp for servicing if it gets dropped, has liquid spilled into it, or sustains damage to its power cord (see page 2).

System Block Diagram

			PEAK LED
INPUT			TONES	9 BAND EQ
			FOOT
-15dB	GAIN	DRIVE	SWITCH	EQ ON
			TREBLE
		BASS
		ULTRA MID			1+	SPEAKON®
					1–	JACK
					LIMIT LED
				MASTER
					POWER	SPEAKER
						OUTS
					AMP
		EFFECTS	EFFECTS
		SEND	RETURN	POST	2
				PRE	3
					BALANCED
				-20dB	OUT

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