Ampeg SVT-150H - Manual (Page 7)

SVT-150H
7
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.
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
TONES 9 BAND EQ
PEAK LED
INPUT
GAIN -15dB DRIVE
BASS
ULTRA MID
TREBLE
FOOT
SWITCH
EFFECTS
SEND
EFFECTS
RETURN
EQ ON
MASTER
PRE
-20dB
2
3
POST
SPEAKER
OUTS
SPEAKON ®
JACK
POWER
AMP
LIMIT LED
BALANCED
OUT
1+
1–
NO SOUND
LEDs LIGHT
POOR SOUND
Check bass, cables
Check speaker(s)
Replace speaker(s)
POOR SOUND
LEDs DON'T LIGHT
Check AC outlet
NO SOUND
NO HUM HUM
Listen for hum
NO CHANGE
SOUND OK
SOUND OK
POOR SOUND SOUND OK
SOUND OK
SOUND OK
Check amp controls, check
for signal from bass
Check power cord,
fuse, power switch Check house fusebox
or circuit breaker SPEAKER(S) OK,
POOR SOUND SPEAKER(S)
DEFECTIVE
Check speaker Unplug bass,
touch tip of cable
LOUD HUM
Check inst. pickup
Speaker OK
Replace cable
NO CHANGE
SEE BELOW SEE BELOW
NO OUTLET OUTLET OK
OK