[Phil Allison[_3_]]

** Hi all,

customer brought me his Fender Champ clone, 5E1 version.

http://www.webphix.com/schematic%20h..._5e1_schem.pdf

There were a couple of changes including a "triode /pentode" switch and the
use of a 6X4 rectifier in lieu of a 5Y3. The amp was fairly well built on
an aluminium chassis by a local Chinese gent using a mix of Chinese,
Japanese and Russian made parts. The 6V6 was in fact 6n6c with blackened
glass, like these:

http://www.decware.com/newsite/images/6p6s.jpg

Closer inspection showed something odd about the 6X4 wiring, the plates both
went direct to ground and there was a standby switch that linked a 56 ohm 5W
to the cathode. The other end of the 56 ohm went to the negative of a bridge
rectifier made from four 1N4007s.

At idle, the amp drew about 43mA from the 300V HT and the voltage on the
cathode of the 6X4 was -7 volts.

So the only function of the 6X4 was to create a warm up delay and confuse
the owner.

Cute eh ?


.... Phil