Same at Tektronix Richard....
I just saw pictures from a Hallicrafters restorer that swears by
scrubbing bubbles tub and tile cleaner. He apparently applies it at
least twice to all the bottom-side point to point wiring and also the
top of chassis with everything except the delicates taken off. THey
looked REALLY nice when he was done. I expect to give this a try here
soon as I am working on a 30S-1 sub chassis that is pretty gunky. Will
let the list know the result.
Curt
KU8L
On 12/1/2011 1:09 AM, Richard Knoppow wrote:
----- Original Message ----- From: "Robert Fish" <[email protected]>
To: "Steve Wedge" <[email protected]>
Cc: <[email protected]>
Sent: Wednesday, November 30, 2011 7:23 PM
Subject: Re: [Drakelist] Baked Drakes
Hey Steve,
How long and at what temp? I would worry about getting water in the
IF cans etc. Does it just bake out? ?
Thanks,
Bob K6GGO
I will repeat the method used at Hewlett-Packard many years ago.
First step was to remove anything that could be damaged by water or
heat. All closed compartments were opened. Then the chassis was rinsed
with warm water from a hose. Then sprayed with a paint spray gun
filled with a solution of water and dishwashing detergent and also
brushed if necessary with a bottle brush. After washing it was again
rinsed off with the hose and warm water. Then blown out with
compressed air to remove as much water as possible. Then it was baked
in a thermostatically controlled electric oven at about 130F for at
least 48 hours. I preferred to keep stuff in there for a week if it
was available. Then whatever was removed was replaced and the
instrument checked on a metered variac. This procedure took off pretty
much anything other than serious fungus (that stuff went to the
factory and I don't know what they did with it).
--
Richard Knoppow
Los Angeles
WB6KBL
[email protected]
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