>Just a caveat to add Jerry, >Monitors keep/hold a charge for many years to come, even when >they've been unplugged. >I'm very leary of ever recommending a client open a CRT and having >them touch anything. You can get zapped by doing so even 5+ years >later. >Best wishes, > >Jeff Slyn, Owner >SLYN Systems & Peripherals >(502) 426-5469 >serving Kentuckiana clients 7 days a week since 1985!
Dunno about 5 years (!) but CRTs do have REALLY BIG capacitors and transformers that can hold lethal voltages for quite a while - if one were to work on a CRT you have to make VERY sure to drain the capacitors first thing, or else. No foolin', people get killed poking about the CRTs used in TV sets and monitors if they aren't careful. If I remember right the flyback transformer delivers several tens of thousands of volts - most unpleasant :) Not really much of an issue for LCDs, though - only tiny capacitors and transformers for the inverters, and as long as they aren't plugged in (duh!) the small capacitors aren't much of a safety issue, at least in the Apple design we're discussing where there is no power supply - the 17" LCD draws power directly from the system through the ADC connector. Thanks for pointing out the safety issue in case someone was reading this thread about LCD repair and decided to tackle a CRT - don't unless you take proper safety precautions, or you could end up a VERY crispy critter. -- Jerry W. Ethington 245 Hawkeegan Drive Frankfort, KY 40601-3912 (502)223-5489 (502)682-2607 cellular jethington at mac.com "Quando omni, flunkus moritati." (When all else fails, play dead.) | The next meeting of the Louisville Computer Society will | be May 24. The LCS Web page is <http://www.kymac.org>. | List posting address: <mailto:macgroup at erdos.math.louisville.edu> | List Web page: <http://erdos.math.louisville.edu/macgroup>
