Any parts worth keeping from PC monitor? - Page 3

DIY_Peter · 15th May 2003, 10:19 AM

I found a nice 17" monitor which is broken. I tried it yesterday, so maybe some caps in it are still charged.

How long does it take for them to dischage? Is it really dangerous to work on this thing?

dhaen · 15th May 2003, 11:32 AM

The power supply caps should be well discharged by now.
The CRT actually has a high voltage capacitor which is formed by the CRT's outer coating (aquadag - a graphite waterbased paint), and the inner coating. This can stay charged for days, (even weeks when they used valve HV rectifiers). It's unlikely to give you much more than a jolt by now.

The consequences of your recoil are more of a problem than the shock: Dropping it, or grazing your hand etc.

DIY_Peter · 16th May 2003, 07:19 AM

Quote:

Originally posted by dhaen
The power supply caps should be well discharged by now.
The CRT actually has a high voltage capacitor which is formed by the CRT's outer coating (aquadag - a graphite waterbased paint), and the inner coating. This can stay charged for days, (even weeks when they used valve HV rectifiers). It's unlikely to give you much more than a jolt by now. The consequences of your recoil are more of a problem than the shock: Dropping it, or grazing your hand etc.

Ok, thanks.

If you never see a post of me again, you know that dhaen can't be trusted

dhaen · 16th May 2003, 08:20 AM

Quote:

Originally posted by DIY_Peter

Ok, thanks.

If you never see a post of me again, you know that dhaen can't be trusted

EC8010 · 16th May 2003, 12:18 PM

The reflex action from the jolt is far more dangerous than the jolt itself. The consequences of throwing a tube at the floor can be very unpleasant...

16th May 2003, 12:18 PM	#25
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Oh, he can. The reflex action from the jolt is far more dangerous than the jolt itself. The consequences of throwing a tube at the floor can be very unpleasant... __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

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15th May 2003, 10:19 AM	#21
DIY_Peter diyAudio Member Join Date: Feb 2003 Location: Leuven	I found a nice 17" monitor which is broken. I tried it yesterday, so maybe some caps in it are still charged. How long does it take for them to dischage? Is it really dangerous to work on this thing?

15th May 2003, 11:32 AM	#22
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	The power supply caps should be well discharged by now. The CRT actually has a high voltage capacitor which is formed by the CRT's outer coating (aquadag - a graphite waterbased paint), and the inner coating. This can stay charged for days, (even weeks when they used valve HV rectifiers). It's unlikely to give you much more than a jolt by now. The consequences of your recoil are more of a problem than the shock: Dropping it, or grazing your hand etc.

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