© MuxLab Inc.
Audio 8x8 Matrix Switch Installation Guide
Page 30
4.
Troubleshooting
Table 2 lists common problems that affect image quality, as well as their possible causes and
solutions. If the information below does not solve the problem, the technical support contact
information can be found at the end of this section.
PROBLEM
POSSIBLE SOLUTIONS
No Sound
Check power on all units
No Sound
Attenuation set to maximum. Slave mode select (must be
master mode).
No Sound
Check Matrix Switch connections. An internal 1 kHz test
tone is available from the LCD menu to test each output
section individually.
Overload LED on
Reduce volume at the source or defective cable.
Choppy Sound (digital only)
Check that distance does not exceed 600 ft (180 m)
Loss of High Frequency Sound (analog only)
Check that distance does not exceed 3000 ft (900 m)
Hum or buzz in sound (analog only)
Ground loop or defective cable. If cable is not defective,
connect equipment to electrical ground (green wire).
Table 2: Troubleshooting
When contacting your nearest MuxLab dealer or MuxLab Technical Support at 877-689-5228
(toll free in North America) or (+1) 514-905-0588 (International), please have the following
information ready:
Unit model number.
Cabling layout. Please include the model of the HDMI source and receiver, cable length
and type.
Description of problem.
List of tests performed.
