RE: X-RAYS

And another piece of the X-Ray puzzle just appeared. You know inside the
rubber HV Anode cap that hooks onto the side of the picture tube they often
have a claw hook and a floppy piece of metal? That piece of metal is
specifically there for X-Ray protection! In my NANAO MS8-26SU Service
Manual (not Vector but hang on) there is a reference to this clip (a
labeled picture) and it states:

  "(3.) Lock the hook inside the Anode cap onto the Anode button surely. If
it has X-ray metal in the Anode cap, attach it onto the Anode button
surely." (exactly as printed ;-)

So...this is a 26" colour raster monitor with 24KV as the Anode voltage...

John :-#)#

At 11:37 AM 27/05/2003 -0700, John Robertson wrote:
>Found a detector that works for X-Rays above 40KeV...
>
>http://www.seintl.com/mon4.htm and there is a kit form available. Still it
>seems not a lot of use for most of us unless we work on monitors all day
>long...
>
>John :-#)#
>
>At 01:11 PM 27/05/2003 -0400, James J. Hagen wrote:
>
>>Last year I brought home a Geiger meter from work. Found normal background
>>readings at both the television and the uprights, measured in front and
>>behind the tubes.
>>
>>James Hagen
>>
>>
>>
>> > -----Original Message-----
>> > From: owner-vectorlist@synthcom.com
>> > [mailto:owner-vectorlist@synthcom.com]On Behalf Of Christopher X.
>> > Candreva
>> > Sent: Tuesday, May 27, 2003 10:40 AM
>> > To: vectorlist@synthcom.com
>> > Subject: Re: VECTOR: X-RAYS
>> >
>> >
>> > On Sun, 25 May 2003, John Robertson wrote:
>> >
>> > > And a better representation of the other article I posted previously:
>> > >
>> > > http://www.belljar.net/xray.htm
>> >
>> > I found this line particularly interesting:
>> >
>> > Before turnng on the power, make sure that you have an operating x-ray
>> > monitor. This will be needed for checking tubes for output as
>> > well as for
>> > checking the effectiveness of the shielding. Bob uses a simple Geiger
>> > counter circuit which was provided as a kit from Electronic
>> > Goldmine (P.O.
>> > Box 5408, Scottsdale, AZ 85261).
>> >
>> > If a Geiger counter will detect X-rays, then that would be a
>> > fairly easy way
>> > to test the monitors.
>> >
>> > Except I don't see that kit at Goldmine, and a Google search
>> > isn't bringing
>> > up anything less than $150.
>> >
>> > Another simple way, if you know a dentist, would be to borrow
>> > some of those
>> > small X-ray films he has you put in your mouth, stick them near
>> > the monitor
>> > for a while, and have him develop them.
>> >
>> > My cousin happens to be a dentist -- and I happen to have helped
>> > him buy his
>> > Ms. Pac Man machine, so I may try this. I asked him this weekend
>> > if and how
>> > he tested his machine. He said he had put films around the exam room when
>> > he first opened, left them there for a few weeks, and they showed nothing.
>> >
>> >
>> > ==========================================================
>> > Chris Candreva -- chris@westnet.com -- (914) 967-7816
>> > WestNet Internet Services of Westchester
>> > http://www.westnet.com/
>> > ------------------------------------------------------------------
>> > ---------
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>> >
>>
>>
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Received on Wed May 28 18:09:43 2003