Here you see the Zephyr's control panel on the top of the cabinet.

It has three inputs into a single-channel amp having a volume and a tone control.

You can also see how the rear panel of the cabinet is ported.

The cabinet top is slanted to provide easier viewing of the controls.

This is the underside of the control panel.

You can see the on-off switch, the fuse holder and the pilot lamp holder.

You can also see the Tone control pot and its tone capacitor.

A metal shield covers the input jacks.

This close-up shows one of the Zephyr input jacks and the Volume control pot.

The Volume pot receives the output signal from the plate of the 6C6 preamp tube, attenuates it, then sends it back down to the control grid of the 6C6 driver tube.

This photo shows the cable bundle that connects the control panel to the tube chassis.

Two shielded control-grid cables push onto grid caps at the top of the 6C6 tubes.

►  The volume control in this Electar Zephyr amplifier was very noisy despite multiple cleanings.

It turned out that the noise was due to a leaky stage-coupling capacitor that produced a DC voltage across the volume pot.

●  The next two pages of this repair story deal with the replacement of a number of  bad capacitors.