[Hallicrafters] HT-37B Tube mystery

[Jack Schrader]

According to my 32b the three tubes across the back of the chassis are :
oa2, 5v4 and 5r4 next to the power transformer.

>From my experience and others, replace the two rectifying tubes(5v4 &
5r4) with solid state devices before you burn out the transformer like I
did. The tranny does not like the combination of a higher line voltage
and the increase temp developed in the transformer. This same advice
goes for the ht37.

----- Original Message ----- 
From: "Darryl Jones" <1986944 at comcast.net>
To: <hallicrafters at mailman.qth.net>
Sent: Sunday, April 13, 2008 7:30 PM
Subject: [Hallicrafters] HT-37B Tube mystery


Hello All,

I recently picked up an HT-32B and am having problems identifying a
missing tube. I pulled all the other tubes, and replaced any that my
Hickock didn't like, but have yet to figure out what the missing tube is
that wasn't on the chasis. It's located directly behind the tuning
capacitor on that board, and doesn't have a chasis marking for it.

Anyone have an ID for me?

Thanks for your help,
Darryl
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