[Hallicrafters] Help With HT-32A

[Roger (K8RI)]

On 1/14/2011 6:04 PM, Fern wrote:
> Roger, the HT-32A is an exciter.....not a linear amplifier. You're 
> thinking of the HT-33B.    Fern
I read it twice and still saw HT33A...<sigh>

It's not nearly so simple with the 32<:-)) I has more parts.
So, backing up and I've not worked on any of my 32s for some time...
IF the fuse blows immediately you can pretty much rule out most things 
down stream from the power supply.
Even the filter cap needs the rectifier to warm up...which doesn't take 
long.
Unplug the rectifiers and see if the fuse still blows.  IF so try a 
variac and measure the current at low primary voltage with the 
rectifiers still unplugged. I believe (if memory serves) there are some 
bypass caps on the ac line.

If the problem persists with the load removed the odds are not good for 
the transformer. Of course there could be shorted wires, and broken 
switches, but the odds at this point would be with the transformer.  
Transformers are available and can be rewound, but are not the cheapest 
component in there.

There are many on here who know the innards of these things better than I.

73 and good luck

Roger(K8RI)
>
>
> ----- Original Message ----- From: "Roger (K8RI)" 
> <hallicraftersgroup at rogerhalstead.com>
> To: <hallicrafters at mailman.qth.net>
> Sent: Friday, January 14, 2011 3:39 PM
> Subject: Re: [Hallicrafters] Help With HT-32A
>
>
>> On 1/14/2011 5:30 PM, ramnaz at peoplepc.com wrote:
>>> Hello.
>>> I have a like brand new HT-32A that has worked great for the last 
>>> year but yesterday I turned it on&  it blew the fuse so I replaced 
>>> the fuse& it blew it again&  I am lost as to why so today I put 
>>> another fuse in& it blew it again so I will not try that again 
>>> anyone know what I should check for as I am no repairman by any means.
>> Remove the tube and see if the problem still persists. (be careful)  I
>> take it there wasn't time for it to warm up enough for any current to
>> show on the meter?
>>
>> I had this happen to an HT-32B back in the 70's and it was an internal
>> short in the PL172/8295A.  I've since gone to the ceramic metal 8295A.
>>
>> 73
>>
>> Roger (K8RI)
>>>
>