[Boatanchors] Cleaning the inside of HT33A amplifier

Jim Wilhite w5jo at brightok.net
Tue Nov 8 17:18:35 EST 2011


Under all that nicotine John, you may find a nice chassis provided 
nothing spilled on it.  Also if the paint isn't scratched, it will be 
quite nice once the nicotine is removed.

Damn Pete I hate Google.  I wanted to look at the picture and they won't 
let me unless I create an account.  Google knows enough about me as it 
is.  I have even quit using them for searches because they are so 
intrusive.  Others track me as well but they are not as intrusive as 
Google.   There must be some service somewhere that does not require 
that.

Jim/W5JO




----- Original Message ----- 



> Joe, I raise you bet ...
>
> Here's is a 390A, pictures were taken at dusk, much worse in full 
> daylight.
>
> https://picasaweb.google.com/111617808980322733757/390A
>
> Something like 2-3 packs a day, never opening a window
>
> -pete
>
> On Tue, Nov 8, 2011 at 5:38 AM, John King <k5pgw at yahoo.com> wrote:
>>
>> Has anyone thoroughly cleaned the inside (chassis and components and 
>> transformers) of a Hallicrafters HT 33A amplifier. My acquisition 
>> seems to be a good one electrically, but the inside is totally coated 
>> with tar and nicotine. I have NEVER seen a piece of electronic gear 
>> turned completely GOLD inside by tar and nicotine.
>>
>> There iare also years of dust and dirty GRIME on the chassis. Looks 
>> AWFUL!!!
>>
>> I am using Go Jo which doesn' t really introduce as much moisture as 
>> plain water and soap although I do have to get the Go Jo off what 
>> ever I put it on. The cabinet and outside of the chassis and 
>> enclosure around amp inside the cabinet are looking good. It is just 
>> the amp chassis and components that re the challenge.
>>
>> I am mainly worried about the transformers because they are NOT 
>> POTTED.
>>
>> BELIEVE IT OR NOT but the underside of
>> the chassis and blower fan are GOLD also. Apparently, the fan drew 
>> the cigarette/cigar smoke into the cabinet and deposited it above and 
>> below the chassis where it adhered to everything.
>>
>> Your personal experience cleaning inside the HT 33A chassis will be 
>> greatly appreciated. Thanks and 73, John, K5PGW



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