WAYNE CHIRNSIDE wrote in a message to ROY J. TELLASON:

-> WAYNE CHIRNSIDE wrote in a message to ROY J. TELLASON:

-> -> I've sometimes wished for "shop air" for those things -- take a
-> -> hose with a blowgun on the end of it,  stand outside (or in a 
-> -> doorway or whatever) and just blast away,  

->  WC> Saw a guy clean his CAR that way on a job site with a commercial 
->  WC> compressor. Done in ten seconds.

 WC> This compressor was a gas driven job on a construction site for
 WC> running a number of jackhammers!

This site I mentioned below was 120 feet in the air and had to be accessed
by way of a "manlift" (conveyor belt with steps!) and a catwalk
across open space.  A rather large industrial plant.

-> I can believe that.  There was one temp job I was at some time
-> back,  where had insane amounts of "dust" in a place,  and what they 
-> started us out with were large sacks and shovels,  until I 
-> discovered the air hose. Took a little longer than 10 minutes,  but 
-> opening up all of the doors and such in there the air was enough to 
-> get pretty much all of that stuff outside.

->  WC> My PS required even more than that could have accomplished.

-> Oh yeah?

-> -> until you didn't see dust coming out any more.  It's amazing how
-> -> much crud can accumulate inside of one of those supplies and still 
-> -> work...

->  WC> I know I was shocked at how bad it was and still worked. Need to 
->  WC> pick up a ten dollar voltmeter to check it due to the extreme 
->  WC> measure I took in cleaning it.

-> If you have a Harbor Freight anywhere near you they had one in this sunday
-> paper flyer for only $3.00.  A digital one,  at that.

 WC> Yeah and you and I know what's in it.
 WC> An IC under a blob of epoxy on the back of the circuit board, a
 WC> membrane contol panel or dirt cheap switch and display.

Probably.  And while I wouldn't want to use such a meter as my primary
tester it didn't seem like a bad idea to pick up one or two as extra ones, 
for those times when you gotta measure more than one thing at a time.

 WC> It's kinda sad I tossed my Knight Kit VTVM, dececades old it still
 WC> weorked fine but where to find a vacuum tube if the existing one
 WC> failed.

You tossed it before it failed?  Jeez!  Tubes are a whole lot less common
than they used to be,  but they're still out there.  My brother's a ham and
has gotten a few older rigs (with tubes) going.

->  WC> If it checks out I'll do the other one the same way...
->  WC> then there's that miserable SFX supply in the H.P.
->  WC> to check out :-(

Good luck.

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