Owner's Manual

07
8. TROUBLESHOOTING TIPS
THERMAL PROTECTION
SYMPTOM The amp gets hot and shuts down.
PROBABLE CAUSE The amp has overheated, either as a result of inadequate ventilation or a damaged cooling system fan. When the amplier cools down to a safe level, the amp will automatically restart.
SUGGESTIONS Please verify that the fan is working properly, and that the cooling system ports are not obstructed.
CURRENT PROTECTION
SYMPTOM The amp turns on, but there is no signal coming from the speaker/s.
PROBABLE CAUSE Low impedance load (minimum impedance for Markbass amps is 4 ohms), or a bad speaker cable.
SUGGESTIONS Please verify the impedance of the speaker/s connected to the amp. Note that two 4 ohm cabinets, or an 8 ohm and a 4 ohm cabinet, will result in an impedance below 4 ohms.
Please check the speaker cable/s.
After checking these two things, please turn the amp o and turn it on again.
If the troubleshooting steps outlined above do not solve your problem, please contact your Markbass distributor/dealer for service information.
For more TROUBLESHOOTING TIPS, please check the FAQ section on the SUPPORT page of our website at www.markbass.it.