I finally put 4 preamp tubes in my Quad and hooked it up.
On channel 1 rhytm 1 the sound level goes up and down. I think it could be the preamp tube for v1 that is old and needs to be exchanged.
The switching is weird. I plug in the fu2 board. All channels light red on the Quad. One is selected and sound comes through but I have no way of knowing which one is selected.
The fu2 board works and lights up as it should when I select one of the switches.
Any ideas on what is going on?
On channel 1 rhytm 1 the sound level goes up and down. I think it could be the preamp tube for v1 that is old and needs to be exchanged.
The switching is weird. I plug in the fu2 board. All channels light red on the Quad. One is selected and sound comes through but I have no way of knowing which one is selected.
The fu2 board works and lights up as it should when I select one of the switches.
Any ideas on what is going on?