[HAM] 32H woes

[John Lynch]

That's a little over my head...but thanks Christoph
----- Original Message ----- 
From: "Christoph Kukulies" <kuku at kukulies.org>
To: "The Hammond Forum" <hammond at zeni.net>
Sent: Sunday, June 22, 2008 9:06 AM
Subject: Re: [HAM] 32H woes


> John Lynch schrieb:
>> I've been trying to get my 32H series 3 going without much success. That 
>> could be because I don't know what I'm doing but I'll tell you the 
>> problem. The 122 I use works perfectly, but when I plug the cable into 
>> the 32H the upper horn makes sound but very weak and the FC bass speaker 
>> makes no sound at all. All the tubes in the amp light up but the 4 power 
>> tubes never get more than warm to the touch. Anyone know what could be 
>> wrong?  -JL
>>
> Have you checked the fuse in the B+ circuit (the circuit diagram shows a
> .25 A fuse going from the center tap of the output transformer
> via a 400 Ohm resitor to the screen grids and the field coil supply).
> Can you measeure about 300V across the field coil?
>
> Check that fuse first. Looks to me that the field coild doesn't get
> current and in conjunction with that the power stage is inoperable.
>
> --
> Christoph
>
>