Please follow the instruction in the manual in order to keep the amplifier work in its best state. If wrongly
operated and you thought that would be troubles please check according to following tips to look for the exact
reasons.
Troubleshooting
NOTE:
is the registered trademark of Zhuhai Spark Electronic Equipment Co., Ltd.
13
Problem
Cause
Solution
No Sound
after power
on
Power
Indicator is
OFF.
Power is not connected
Connect power cord securely
Check main power supply
Main fuse is out.
Replace fuse with same
specification
Power
Indicator is
ON.
NO input
signal .
Check source equipment is working
Select input source correctly
Volume at minimum position
Turn up volume
Interconnect not properly connected
Connect all cables securely
Headphone cable not properly
connected
Connect headphone cable properly
Headphone output not specified
correctly
Select headphone output correctly
Selected the wrong output
Select headphone or speaker output
correctly
Umbilical Power cable not properly
connected
Reconnect the umbilical power
cable, position the alignment groove
correctly before tighten up the
screw-threaded connector
No sound from
left or right
channel
V3 or V4 300B vacuum tube fuse is
broken
Replace the fuse with the same
specification
300B vacuum tube is damaged
Replace the 300B Vacuum Tube
Excessive noise
Input source badly connected
Install interconnect properly
Interconnect grounding
disconnected
Replace interconnect
Equipment malfunction
Contact authorized dealer for
technical support
Soundstage and imaging
not focused
Left and right channel of source
equipment reversed
Reinstall related cabled correctly
Headphone cable polarity reversed
Speaker cable polarity reserved
