From tweeks@texas.net Received: from texas.net (dnet03-24.sat.texas.net [206.127.4.84]) by mail3.texas.net (8.8.7/8.8.5) with SMTP id XAA15508; Tue, 4 Nov 1997 23:29:38 -0600 (CST) From: Thomas Weeks To: Fred CC: Thomas Weeks Date: Tue, 17 Jan 1978 00:00:45 +0500 Message-ID: In-Reply-To: <01bce891$d8db8ba0$562f989e@stordir> X-Mailer: YAM 1.3.4 [020] - Amiga Mailer by Marcel Beck Subject: Re: A500 schematics ? MIME-Version: 1.0 Content-Type: text/plain X-UIDL: 3ec0ff72028f8aea9f5925db41c82804 Around 04-Nov-97, Fred typed: >Hello, I've got a slightly dead A500 Revision 5, and I see from your web >page that your butcher Amigas for fun :-) >So hopefully you'll know, or give a pointers, as to what the values of a >couple of resistors are. >The resistors are R405 and R406. That would indicate that your Video Hybrd (HY1) is blown and caused them to both go... that is a hard part to get ahold of.. and it would cost you an arm and a leg... your' probably better off just either getting another A500 (Seen 'em as low as $25) or getting one for scrap and ripping out the HY1 out of IT... The former would be the easiest.. the latter would probably be the cheapest... assuming that you are good with desoldering high density packages... >It seems that the TV modulator was pulled out while the machine was on and a >such turned these resistors black and crispy. oh.. also. those resistors probably need to be changed also.. they are: R405 - 4.7 ohm R406 - 4.7 Ohm (both 1/4W 5%... may want to use flame proof) Hmm that's what the schems list them as.. but in the parts listing they are 10Ohm... I would go with the 4.7... safer... Tom D Tek -- __________________________________________________________________________ / Thomas W. Weeks |Team AMIGA Commodore Amiga 500/030 40MHz \ | A&M EET/Telecom Grad '95 | /// Hacked Into Black Tower Case, | | Authorized Amiga Tech (7yrs) | __ /// 9M RAM, SyQuest 44M, 700M-o-SCSI | | Contact Me @ | \\\/// IBM 286 Hardware Emulator, | | o------------o | \XX/ Home Brew Audio A/D, HP48GX | | Email: tweeks@texas.net |"Amiga, The Computer for the Creative Mind"TM| |Web:lonestar.texas.net/~tweeks|"Mac, The Computer for the Rest of Us"TM | \_____________________________|____________________________________________/