Xref: utzoo unix-pc.general:1273 comp.sys.att:4041 sci.electronics:3659 Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!ames!ncar!oddjob!gargoyle!att!icus!limbic!gil From: gil@limbic.UUCP (Gil Kloepfer Jr.) Newsgroups: unix-pc.general,comp.sys.att,sci.electronics Subject: Re: Bouncey-Bouncey Summary: Check the horiz hold pot Message-ID: <181@limbic.UUCP> Date: 19 Aug 88 01:40:19 GMT References: <593@proxftl.UUCP> Reply-To: gil@limbic.UUCP (Gil Kloepfer Jr.) Organization: ICUS Software Systems, Islip, NY Lines: 24 In article <593@proxftl.UUCP> aaron@proxftl.UUCP (Aaron Zimmerman) writes: |>My 3b1's monitor (you know, that ugly GreenScreen...) has a sore case of the |>bounceys. Sometimes it will decide to sort of vibrate up and down. This happened to me with a DEC VT220 Video Terminal several times. What happens is that (for some reason) the horizontal hold potientiometer inside the unit got flaky from being in the same position for a long period of time (add humidity and temperature variations). A really silly fix that worked was to shut the unit off and to work the pot back and fourth a couple of times with a screwdriver, putting the control back to its original position when finished. After performing this feat, you should readjust the pot (with the power on :-{) so that the screen is pleasing to the eye and doesn't produce any annoying high-pitched squeeks. I'm going to cross-post this one to sci.electronics to see if someone in electronic-land has a more permanent solution. +------------------------------------+----------------------------------------+ | Gil Kloepfer, Jr. | Net-Address: | | ICUS Software Systems | {boulder,talcott}!icus!limbic!gil | | P.O. Box 1 | Voice-net: (516) 968-6860 | | Islip Terrace, New York 11752 | Othernet: gil@limbic.UUCP | +------------------------------------+----------------------------------------+