but. . .but. . .BUT, BUT, BUT, I can’t find a 35 used as a 1st detector on
that set, it’s the sets I.F amplifier, is there a chance that some one
has shuffled your ‘24’s and the 35, or are you possibly looking at it
CROSS-LEY-eyed.


With that aspect being corrected, one would expect an abnormally high
reading on a tubes (#35)voltage spec testing being due to:


1…No filament voltage

2…Open filament on tube

3…Poor tube socket contact action. . .plug ‘em all in and out
. . .’bout ’lebenteen times, at the least.

3…Check continuity of the 1st grid caps, PARTICULARLY if they
are those that are relying on a folded back wire and then a
shell crimping to make connective contact. . . .ergo, with no
soldering being used.

Then, circuitry wise, consult the accompanying mark-up schema:


Initially, also confirming, concidentally. . . as per Sir Norman. . .
That the main B+ is originating from the 80 and then feeds up to
the field coil and makes its drop at that point and then that
level feeds up to the screen grid of the 47 and then flows down
and over to the left thru the [ORANGE] buss and feeds the plate
circuitry of the 35 I.F. amp, then passes to the left to the red
arrows, where there is a voltage drop thru the [GRAY BOX]
dropping resistor, where slightly reduced B+ is then passed up
to the 1st 24‘s screen grid, then to the right over to the 35’s
screen grid and finally makes a connection to the [HEAVY GRAY BOX]
resistor where the final drop is made to feed the proper level
to the screen of the sets second 24.

That gets all of the screens fed, along with the “ass-umption”
That you have no leakages or problems with the highlighted
[BOLD YELLOW] decoupling cap-ac-i-tators .

Now we go to the cathode of that 35 if, its floating you would
have no tube conduction and the high voltage readings mentioned.
The volume / IF gain/cathode resistor function is made down in the
[RED BOX] area where yuou can see that if its rotor is in the max
CCW position it is connecting to the left pots tab and going up and
shorting out all of that nice little RF from the antenna input.
[TURQOISE SIGNAL PATH].

SIMULTANEOUSLY lets look at the right half of the markup of that
same pot [FUSCIA ] and we see that if we have the pot at max CCW
position, that the pot will have the cathode up in the 1,000’s of ohms
above ground, ALONG with the + voltage that is coming down thru the
15,000 ohm resistor [PALE YELLOW BOX] from the fore mentioned
sub B+ buss.


There’s not going to be much of anything happening in that stage until
the pot is advanced CW and it THEN starts becoming a valid lower value
cathode resistor, with the incrementing gain increasing progressively
until it reaches the max low value as determined by that internal fixed
“stop” resistor as is shown, placed at the right side of the control.

CONFIRMATIONS:


1. . .Initially do a cold set–no power and test for continuity from the
grips of the 1st grid lead of the 35 to chassis ground and confirm units
of ohms, thus no open G1-24065 (small value RFC choke coil) nor any
of the interconnecting wiring.


2. . .Cold set –no power, test of the resistance measured from chassis
ground to the cathode of that 35 to see what the readings are at max
CW and then max CCW positions, to see if that gain/”vol” control is O.K.



Standing by for feedback. . .


(If you haven’t found it by now, why do I next suspicion a local ossifrier that
is not ossifrying ?)