>Date: Sun, 01 Sep 2002 17:21:15 -0600
>From: Philip Stortz <[EMAIL PROTECTED]>
>Jeff Walther wrote:
>--------
>> IIRC, Larry Pina recommends putting a 1 Mohm resistor in line
>> (series) with the discharge wire to slow the discharge. He says
>> there's a component that is likely to be damaged if you discharge it
>> with an unrestricted wire to ground.
>>
>> So, screwdriver, bit of wire, 1 Mohm resistor, more wire, chassis/ground.
>===========
>>
> the component that can be damaged
>by quick discharge is the inside and outside coating on the crt.
Actually, Pina states that it is a chip on the Analog board that will
be damaged. He's talking about the Plus but the SE is so similar I
imagine it has a similar susceptibility.
Okay, I looked it up. The instructions for building one's own tool
is on pages 10 - 12 of MRUS. He does emphasize insulating the leads
of the resistor. However, he recommends a 1/4 watt 10 megawatt (not
1 megawatt, my memory was faulty) resistor. While the voltage is
high, there isn't that much charge there, I guess.
Also, he says to attach one lead of the resistor to the ground
chassis, so it's screwdriver, wire, resistor with no wire after the
resistor. And again, he emphasizes insulating (e.g. heat shrink
tubing) the hot side of the resistor.
I haven't found the bit about damage from unresisted discharge, but
I'm out of time. Maybe it was in DMS.
Jeff Walther
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