The most famous and referenced purveyor of the "Wash and Run" for
electronics is Tektronix. They used the procedure for many years, and
even had special "dishwashers" made to hold even the largest scopes.
What is NOT so widely discussed is that Tektronix in those days had a
lifetime warranty on power transformers, and very little mention is made
of how many were replaced after washing!! Unsealed transformers and
water do not do well together, be they power, IF, Audio output, or ...
Washing electronic gear is right up there with using abrasive or
chemical "cleaners" on rotary switch contacts, using Q-tips, brushes or
any other "tools." Aside from the damage done to the VERY thin silver
plating it's all too easy to snag a fixed contact and "spring" it where
it no longer makes reliable contact. I've seen far too many radios
scrapped because an irreplaceable switch wafer was damaged by "cleaning".
I'll stick with John's method.
73, Garey - K4OAH
St Charles, IL
Drake 2-B, 4B& C-Line,& TR-4/C Service Supplement CDs
<www.k4oah.com>
john wrote:
At 06:58 PM 11/1/2009, Hulett, Russell wrote:
I've read about running a Drake through a dishwasher,
There's a lot to learn about a radio (Drake or otherwise) through the
careful manual cleaning with forceps and rags, qtips, and time.
Though I'm far the a world class technician, I've fixed more rigs by
observing carefully as part of a patient cleaning process, than I have
with a scope probe in my hand.
John K5MO
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