PRESONUS ADL600 [18/22] Troubleshooting

ADL 600

Overview Hookup ResourcesResources

3.5 Troubleshooting

No power.

First make sure your unit is plugged in. If it’s connected to a power conditioner, verify

that the power conditioner is turned on and functioning properly. Check the fuse on

the back panel of the ADL 600. (Be sure to disconnect the power from the ADL 600

before opening the fuse housing.) A blown fuse may look black on the inside or the

wire inside might appear broken, and a very black fuse indicates that something may

have shorted out. Try replacing the fuse with a new one. The ADL 600 uses a 2 Amp

fuse. If the fuse blows again, please contact PreSonus to get your ADL 600 repaired.

Not passing audio.

If the ADL 600 appears to power on but it’s not passing signal (the lights are on but

nobody’s home), ﬁrst check all the cables connected to your ADL 600 and make

sure that they are working correctly. Also, verify that the Source Select switch is set

to the correct input and that the Gain control is set to provide enough amplitude

for the signal. If you have your ADL 600 connected to a patch bay, try connecting

a source directly to the ADL 600 to rule out a problem with the patch bay.

ADL 600 emits noise when the front panel is tapped.

Tubes can become microphonic over time, which is a fancy way of saying

they can begin to act like a microphone—and not a good one. In this

case, one or more of the tubes will need to be replaced. Contact PreSonus

or a service professional to locate and replace the oﬀending tube.

Hiss.

This is another common indication of a tube in need of replacement. Again, contact

PreSonus or a service professional to locate and replace the oﬀending tube.