no output

[tappman]

ashdown mag 600 head HAS NO OUTPUT meter moves when the bass is played fan works lights up just no sound ,tried different cables in every order ,still no sound .no burns on the board fuses all look fine plz help ??????????????????????

[MoonBassAlpha]

Try linking the send return sockets with a known working lead. If these are rarely or never used they can get tarnished and mute the signal.

[GregBass]

When you say the fuses all look fine, have you actually tested them with a meter? If not, then either do that or just replace them one by one.

[geoham]

Few things to try:

Plug straight in to the FX return. This bypasses the pre-amp. You'll still hear the bass if you crank the master volume. If you still get no sound, it's likely the power amp is gone.

On a similar note, see if you are getting any signal from the FX send. (Perhaps run a jack cable to another amp - keep the gain down though - or even a tuner). This will confirm your pre-amp is working.

Try a different speaker cabinet

Failing all of the above, either continuity test all fuses with a multimeter, or replace them one at a time.