6DS4 tubes

[Dick Blaney]

All the Nuvistors I've ever had ran hotter than a...........(you fill
in the blank) when working.  Possibly you've got an open in your tube
tester heater circuit to that socket.
73 de
Dick, WB8MHE
wb8mhe at bright.net


-----Original Message-----
From: Leisman <wb8baf at voyager.net>
To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
Date: Saturday, July 10, 1999 8:33 PM
Subject: 6DS4 tubes


>I have an SB-110a that I'm trying to restore, and this has been a
>trail.  The wiring has been a mess, and several tubes needed
>replacement.  My questions surrounds the 6DS4.  When I try to test
one
>of these in the tube tester (my tester actually has a socket for the
>tube) I can get no emission reading, Grid leakage tests ok, and there
>are apparently no shorts, but the tubes does not feel even "warm"
from
>the filaments either.  I have tested 6 of these tubes and same result
>each time.  I even tested a 6SK4 with the same result.
>
>Through the SB-110a I can hear a small signal from a generator, and
the
>LMO is working, but I cannot seem to get much more than the smallest
>signal into the speaker.  The 6DS4 tubes are V1 and V2 respectively
in
>the front end of the receiver.
>
>Anyone have any suggestions, or any experience with these tubes?
>
>Your assistance is appreciated.
>
>Dave, W8QW
>
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