Dion Briggs wrote: > > Hello folks. > > I'm overjoyed to have found this group and have learned a bunch in a few > months. Your collective expertise is amazing. > I have an SE/30 upstairs collecting dust. My first of maybe 6 macs. > > And I recently purchased a Mac 128k. > > I am going to take it apart, photograph it, and create an 'Exploded > Design' that I'm going to put on a T-shirt. > (I am aware of the existing Exploded Design after asking for it here; > I'm going to do something different.) > > The Mac arrived today and I'm going to get to work on Saturday. The > sender of the Mac has been great, and has > passed on the following advice. > > I'm just kinda double-checking it because I don't want to get shocked, > yanno. Also, he made it clear that I am > taking my own risk with disassembly. :) > > from him: > > *It's not been plugged in for months, so there should be no shock risk. > It's prudent to pretend there IS however. Here's how to discharge a CRT. > > Use two long screwdrivers, with good insulated handles. Touch one > screwdriver tip to the CRT where the high-voltage line is attached, > under that suction cup, find the conductor. Touch the other tip to a > ground on the metal chassis. THen cross the two screwdrivers so the > metal shafts TOUCH. that shorts out any "charge".
No. Ground one screwdriver through a wire to the metal chassis and then work it's tip into the high voltage contact. > > DONT DONT DONT do this with a LIVE POWERED CRT. > Wait hours before doing this with a RECENTLY LIVE CRT. > Wear insulated shoes, don't stand on wet floors, don't touch dead > circuits without verifying they are inactive FIRST. > > CRT's are like big CAPACITORS. They store charge. Really!* Most of the time there is no need to discharge the CRT, just don't disconnect the high voltage. Always treat the CRT as if it's fully charged, ALWAYS. -- Clark Martin Redwood City, CA, USA Macintosh / Internet Consulting "I'm a designated driver on the Information Super Highway" --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
