Woo Audio WA7 Fireflies - Manual (Page 13)

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FAQ - Frequently Asked Questions
Computer cannot find the WA7 Fireflies USB DAC.
o
Check USB cable connection and make sure the cable is USB 2.0 compatible.
o
See “Installing USB driver” section for configuration.
No sound is coming out of the headphone jack.
o
Check you have selected the correct position of the Input-Output switch. Check input connection.
Check computer USB output setting if USB input is used.
No sound is coming out of the mini headphone jack.
o
Only one headphone is operational at a time. Disconnect headphones from the ¼” jack to enable
output of the mini phone jack.
There is static noise, or one channel is dropping out.
o
Re-seat all tubes. Make sure that all tubes are securely installed.
The LED does not light.
First check if the AC cord is installed. Next, check if the umbilical cord is securely attached between the
amp and the power supply. If the fuse is burnt, see the following instruction on how to replace a fuse. The
fuse type is 400mA@115V or 200mA@230V, slow blow type.


Insert a small flat
screwdriver into the
fuse door located on
the AC inlet.
Pull the fuse door
to open it.
The fuse holder
may be released
from the AC inlet.
Replace the burnt
fuse with a new one
