At 02:12 PM 12/14/2006, Howard W. Ashcraft wrote...
For an example of what damage can be done, I am restoring a Tek
SC504
oscilloscope where someone used contact cleaner/solvent on the channel
2
attenuator.
Tek used special PC board material (polysulfone?) in the attenuators
for many of their scopes. Most of the manuals specifically warn about
using anything other than isopropyl alcohol for cleaning.
From the 485 manual - "Cleaning the switch contacts should only be
done using isopropyl alcohol or a solution of 1% Joy detergent and 99%
water. Do not use acetone, MEK, MIBK, benzol, toluol, carbon
tetrachloride, trichlor, trichlene, methyl alcohol, methylene chloride,
sulfuric acid, or Freon TC-TETF-22-TA-12." - they had a sense of humor,
no battery acid cleaning allowed!
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