I have just started restoration of a Zenith "Universal" 6G601M [S/N T556876]
and have noted two odd things about the almost untouched chassis.

1. there is a sleeved wire coming from the grid of the 3Q5 output tube and
laying across the socket of the 117Z6 rectifier, but not connected at the
far end. According to the schematic and common sense, this wire serves no
purpose, but is clearly factory original. In photo see it coming from the
tag just behind the 2.2meg resistor and across the socket and ending over
the grey wire. Since the grid impedance is almost a megohm, one might think
it would pick up hum.

2. The orientation of the sockets for the 1LN4 IF and 1LH4 detector/1st
audio are substantially different than that shown in the Riders schematic
[Zenith Page 13-17] and the pin numbers are not shown on the schematic, only
the function callout on the socket voltage diagram. I have not noticed this
sort of error before.

Neil S.