B&K TX4430 - Manual (Page 12)

T roubleshooting
PROBLEM POSSIBLE CAUSE
No sound
{‘on’ LED not Illuminated) 1
.
2 .
3.
4.
Power cord not plugged in.
Power off at AC source.
AC power inlet fuse blown or
faulty.
Control switch in wrong
position.
No sound on some or all
1.
selected channels (‘on’ LED | 2.
illuminated)
3.
4.
5.
Speaker leads loose or faulty
Line stage to amp. cables
loose, or faulty.
Source to line stage cables
loose or faulty,
line stage or source not
correctly selected.
Level controls at MIN.
POSSIBLE
SOLUTION
1
.
2
.
3.
4.
Reconnect power cord.
Check AC switch or
fuse.
Check for shorts or
overloading.
Place control switch in
proper position (page
10
).
1
2
Sound lacks direction, bass
weak
1 Speakers connected out of
phase.
Loud hum or buzz on one or
I 1
more channels
Poor ground connection in
interconnect cables.
Low output from amplifier 1 . Balanced switch in balanced
mode when using unbalanced
inputs.
Channel sounds distorted
and low in output 1 Blown rail fuse
3
4
5
Tighten, repair, or
replace cable
Tighten, repair or
replace cable
Tighten, repair or
replace cable
Check all switch
settings.
Turn level controls fully
clockwise.
1 Check connections
making sure that
cables are connected
(+) to (+) and (-) to (-).
1 Check all connectors
and repair as
necessary.
1 Put balanced switch in
correct position.
1
.
Replace blown rail fuse
inside amplifier.
Hriir
Noto:
If unit continues to blow power inlet fuses, DO NOT USE A HEAVIER
FUSE!!, have it serviced.
Page 10