RE: Pins & Vids Audio Show

I have found that if the tube is not shorted for a few minutes, that
sometimes it can "re-charge" a bit, I think because if the glass screen of
the tube still has a small static charge, and then if this is discharged
will produce a negative charge in the tube. Not much of a charge (perhaps a
couple of hundred volts) but a bit shocking if not expected. Rare, but it
happens...

We have had HV leads that were not hooked properly into the tube anode
dropping onto the board with alarming (almost fire alarm) results when the
game is turned on...the screwdriver stuffed into the wall outlet is so
stupid I can't wait to hear that the guy is sued because some idiot stuffs
the screwdriver into the hot terminal of the socket!

I tried to find the guy's email address on his site, but no luck. If anyone
knows it could they PLEASE inform him how dangerous this is!!!

John :-#)#

At 12:59 PM 12/13/1999 -0500, you wrote:
>Yikes, I say!
>
>I took a look at that site and couldn't believe he would document his
>follies! I wouldn't give the site a second look, except for laughs.
>
>I laughed hysterically when I saw the picture of the screwdriver still
>wedged underneath the anode cap. I wouldn't want to be around there if the
>screwdriver fell just right on the neck. In my experience as a Broadcast
>Engineer, I've never had an instance when a CRT reacquired its charge after
>a single discharge of the anode cap to ground (CHASSIS ground). There's
>nothing left to kick off the FBT.
>
>Providing the monitor is unplugged in the first place. If not, then there's
>always a spot on the Darwin Awards.
>
>Anyhow, I haven't done anything with my SD since making work copies of the
>schematics (the game is 1/2 hr away). The next step I believe I should take
>is to connect a VOM's + to a ground on the board, and 'feel' around the
>chips with the - lead... That'll send be in the right direction where I can
>determine the cause for the watchdog timeout. I seem to remember not seeing
>activity on the two outermost EPROM test points.
>
>It'll be a joy not hearing the click, click, click of the coin bypass coil.
>
>-John
>
>-----Original Message-----

From: Christopher X. Candreva
>One thing this show reminded me of -- did anyone ever contact the person
>with the alternate cap-kit instructions, and actually tell him his
>method of tube discharging is -- suboptimal ?
>:-)
>-Chris

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Received on Mon Dec 13 12:18:17 1999