Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site wucs.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!wucs!dale From: dale@wucs.UUCP (Dale Frye) Newsgroups: net.micro.mac Subject: Re: Power Supply Voltage Message-ID: <1166@wucs.UUCP> Date: Tue, 17-Sep-85 14:36:38 EDT Article-I.D.: wucs.1166 Posted: Tue Sep 17 14:36:38 1985 Date-Received: Wed, 18-Sep-85 05:19:26 EDT References: <965@oddjob.UUCP> Distribution: net Organization: Washington U. in St. Louis, CS Dept. Lines: 34 In article <965@oddjob.UUCP>, paluzzi@oddjob.UUCP (Paul Paluzzi) writes: > > Recently (2 weeks ago), my Mac's power supply was fried by > a power surge. I took it in to my dealer, who replaced the > supply for me. The problem is this: since I got the computer > back, the active screen area is much larger (extending up > into the corners of the physical screen), and the bell is > annoyingly loud upon startup. Since I did not have this > problem before, two possibilities have come to mind: > > (1) My friendly dealer decided to give me some "extra," free > service. This seems unlikely. > > (2) The new power supply is delivering more voltage than > the old one did. I know the screen height and width are > controlled by pots inside the computer, and I would guess > that the beep could be controlled similarly. > > Either way, I don't really feel like leaving my Mac in the > hands of this dealer again. I would like to hear if anyone > else has had a similar problem, or if anyone has any ideas > about the solution. If the power supply voltage is the culprit, > does anyone know where the pots that need adjusting are? > The power supply, video and speaker are on the same board. The technician tht swapped out the board did a lousy job. He(or she) should have adjusted the screen properly. There are set measurements for the screen in the Apple repair manual. As far as the volume goes, I have a dumb question. Have you adjusted the volume on the 'control panel' pull-down menu? The case has to be opened to adjust the video. Take it back and DEMAND that it is adjusted on the spot. It only takes a few minutes to do. Dale Frye @ Washington University in St. Louis