Roland Cube 60 No Output

[AtomicMassUnit]

This is a newer model Cube 60. There's no sound from the main speaker, but the Line Out, Tuner Out, and Headphone out all work. I'm still looking for a schematic, the one I have is the older model with preamp in/out. Are there any common problems with these? Power transistors?

[Enzo]

So test the speaker, inspect the speaker wiring. Headphones jacks usually cut out the speaker, so look at the phones jack for a cutout contact not closing.

[mozwell]

various cube & blues cube schematics
On the blues cube schematic, there seems to be a fet in to the power amp, presumably as a mute.
If this was permanently "off", you woudl get no sound from the speaker, but the preamp outs would all be ok.
But as Enzo says, check the speaker voice coil resistance, & plug a lead from preamp out socket to power amp in socket, if there is one

[AtomicMassUnit]

various cube & blues cube schematics
On the blues cube schematic, there seems to be a fet in to the power amp, presumably as a mute.
If this was permanently "off", you woudl get no sound from the speaker, but the preamp outs would all be ok.
But as Enzo says, check the speaker voice coil resistance, & plug a lead from preamp out socket to power amp in socket, if there is one

The speaker is ok, checked that. Unfortunately it doesn't have a power amp in. They did not make it easy to get to everything in here for sure, no slack in any wires, tight chassis etc.

Thanks for the schematics!

[teemuk]

Thanks for the schematics!

Unfortunately none are for the amp you have. One is for the older 1970's "Cubes", the other two for the Blues Cube 60, again a different amp.

Have you tried contacting Roland?

[DrGonz78]

This is the first place I have hit in the search for the schematic of a Roland Cube 60. Newer one like AtomicMassUnit was looking to get... Anyone got it online? THanks!