Re: working on a WG6100 HV

Mark Shostak wrote:
> Andy, don't over think this one.
>
> The biggest issue is that the anode wire is like a spring, and trying
> to get it to stay where you want it, not to mention attached to the HV
> probe without it flopping over to where it wants to go, can be
> frustrating.
>
> 25KV isn't going to jump across the table (unless your table is metal).
>
> This is all high impedance / low current, so your readings will be fine.
>
> Use common sense, don't check the HV like you did a 9V battery as a
> kid, etc., and you won't have any problem.
>
> Thanks,
> -Mark
>

You mean the tongue test for batteries? (yikes!)

Simply jam the HV probe onto the clip of the HV anode lead all wedged in
the cup (ceramic or glass - good insulation) such that the anode lead
won't pop out and attack you with malice aforethought.

John ;-#)#
> On Mon, Feb 7, 2011 at 10:14 AM, Andrew Welburn <andy@andysarcade.net
> <mailto:andy@andysarcade.net>> wrote:
>
> ok, but will the HV unit operate as it should if it were plugged
> into a tube? i assume so...
>
> Also, what about measuring the HV in this sort of setup, do you
> conenct your hv probe to the anode cup inside your mug to test and
> measure while its live?
>
> --
>
> Andrew Welburn
> http://www.andys-arcade.com
> ----- Original Message ----- From: "John Robertson"
> <pinball@telus.net <mailto:pinball@telus.net>>
> To: <vectorlist@vectorlist.org <mailto:vectorlist@vectorlist.org>>
> Sent: Monday, February 07, 2011 4:07 PM
> Subject: Re: VECTOR: working on a WG6100 HV
>
>
>
> Andrew Welburn wrote:
>
> hey all.
>
> I have all the bits from a WG 6100 to sort out, but i do
> not have the
> tube... there is a problem on the HV and i'd like to work
> on it and test it
> out/fix it, i have heard things in the past about people
> working on HV's
> when they're live and not connected to a tube by putting
> the anode in a jam
> jar (or ceramic cofee mug!) for example... it does sound a
> bit crazy but its
> not unheard of...
>
> Whats the consensus here, borderline safe/unsafe? should
> i just try and find a 19"
> tube (i don't have any) and just hook it up so that the hv
> has a tube to energise at least? Or
> can i wrestle the live anode like the croc hunter catching
> a large agitated
> snake?
>
> --
> Andrew Welburn
> http://www.andys-arcade.com
>
>
> Hi Andy,
>
> I've tested many a HV unit on the bench using my old ceramic
> mug as the anode shield. There really isn't any risk as long
> as you are not moving the HV unit around while it is powered
> up! You do not want the cable to pop out of the mug while it
> is live - so turn it off to move to a new position, then back
> on to do next test...
>
> There is no stored charge on the anode - no capacitor to hold
> it - so the device is pretty safe to handle immediately after
> turning off the power (watch for focus/screen voltages if any
> caps on those lines).
>
> John :-#)#
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com <http://www.flippers.com> "Old
> pinballers never die, they just flip out"
>

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Received on Mon Feb 7 12:28:54 2011