Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!noose.ecn.purdue.edu!stable.ecn.purdue.edu!yorkw From: yorkw@stable.ecn.purdue.edu (Willis F York) Newsgroups: comp.sys.amiga.hardware Subject: Re: Snapping Monitor Problem Message-ID: Date: 26 Mar 91 15:08:17 GMT References: <757@rocksanne.WRC.XEROX.COM> Sender: root@noose.ecn.purdue.edu (ECN System Management) Organization: Purdue University Engineering Computer Network Lines: 42 morgana@canard.wrc.xerox.com (Steve Morgana) writes: >I think this has been asked several times before, but I did not pay >attention since I didn't think it could happen to me :-), perhaps it >should go into the frequently asked questions posting. >The rgb monitor attached to my A1000 has started "snapping", about once >every 5 or 6 minutes. At first I didnt think it was a big deal, but >once, when I was debugging my LUCAS board, I noticed that whenever the >monitor snapped, my logic probe would indicate a pulse occured even when >it was not actually in use. I assume that something nasty is happening >to the power supply during these snapping episodes. >I dont remember the model number of the monitor, but its the one that >was sold back in the very beginning of Amiga time. Mine is very OLD also, and mi would "snap" and have a little "starburst" in the middle of the screen, (A little Explosion) and then of late, it's been "blacking" out. The picture would die, turing it on/off would correct it on SOME instances.. But it seems a LOT better NOW. What i did. 1) Opend the Dang thing. (BE CAREFULL, Ya COULD KILL YA SELF) 2) Dusted it out. (with a feather duster.) 3) Removed the internal speaker.(I broke it opening the case :^( ) (Removing the speaker will help airflow through the case :^) 4) Took black tape, and there appeared to be "melted" plastic on the main CRT tube, at the small end, near some plastic rings. I cleande off the "melted" stuff, (Very brittle) and wraped the area in Black tape. Well it ain't gone bad since. I don't know what the OTHER people did to fix their problem.. :^) . -- yorkw@ecn.purdue.edu aka Willis F York aka Squid on IRC The only thing that Apple invented is the idea to borrow Xerox-invented ideas. (Hope THIS sig don't insult anyone!) :^)