[Hallicrafters] Cleaning the inside of HT33A amplifier

[Mike Everette]

PB Blaster, a penetrant in aerosol cans, sold in auto parts stores, is great on tar and stink-weed residue.  Put it on a cotton ball on the end of a stick, and SCRUB.

Do this with PLENTY of ventilation.

Follow up with Nevr-Dull cotton wadding chrome polish... again, ise plenty of ventilation.

73

Mike
W4DSE


--- On Tue, 11/8/11, John King <k5pgw at yahoo.com> wrote:

> From: John King <k5pgw at yahoo.com>
> Subject: [Hallicrafters] Cleaning the inside of HT33A amplifier
> To: hallicrafters at mailman.qth.net
> Date: Tuesday, November 8, 2011, 8:37 AM
> 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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