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Correct method to discharge a CRT    
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rrobor



Joined: 18 Jul 2009
Posts: 9
Location: East coast

PostPosted: Sat Jul 18, 2009 1:57 am    Post subject: Correct method to discharge a CRT Reply with quote

How to discharge a CRT without killing yourself works, pitty by this method you can kill the micro or corrupt an Eprom. You must always discharge the crt to the aguadag or the strap on that. Ite aquadag often is not at chassis potential so if you charge the chassis it will reverse bias many things.
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kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS

PostPosted: Sat Jul 18, 2009 6:34 am    Post subject: Reply with quote

thanks for bringing this to my attention. I have done the method shown here many times with no issues... yet

So, how does one attach the to the aquadag?
JTS1957



Joined: 21 Jan 2009
Posts: 2394
Location: Far, Far Away

PostPosted: Sat Jul 18, 2009 2:53 pm    Post subject: Reply with quote

Some are at chassis ground potential, some are not.

Most manufacturers have a (sometimes) spring-loaded "strap" that (usually) also connects to a main chassis ground and a stake on the CRT neck board.

Philips connects to a stake on the main board near the flyback.

Just take your finger nail, pull outward on strap and insert wire, alligator clip, etc.

See: http://en.wikipedia.org/wiki/Aquadag
rrobor



Joined: 18 Jul 2009
Posts: 9
Location: East coast

PostPosted: Thu Jul 23, 2009 7:28 am    Post subject: Reply with quote

A pro would use 2 screwdrivers in a crossed sword config, its quick and easy. Even when Philips supplied a spade most techs never used it.
kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS

PostPosted: Mon Sep 21, 2009 12:31 pm    Post subject: Reply with quote

I updated the tutorial with your suggestions. Thank you.
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