akcs.egarcia@hpcvbbs.UUCP (Edwin Garcia) (05/12/91)
Howdy Chris, In case you were wondering why the LED display on your 33C is starting to get intermittent, you might be interested in the following note which was forwarded to me from a friend: From: hpcvra!ken%csis.dit.csiro.au Date: Sat, 11 May 91 16:20:48 +1000 ------- Forwarded Message Return-Path: jimc@isc-br.isc-br.com Received: from isc-br.isc-br.com by lynx (4.1/1.0) id AA12667; Tue, 30 Apr 91 07:34:19 EST Received: by isc-br.isc-br.com (/\=-/\ Smail3.1.18.1 #18.9) id <m0jXfpg-000dSeC@isc-br.isc-br.com>; Mon, 29 Apr 91 14:32 PDT Message-Id: <m0jXfpg-000dSeC@isc-br.isc-br.com> Date: Mon, 29 Apr 91 14:35 PDT From: jimc@isc-br.isc-br.com (Jim Cathey) To: ken@csis.dit.csiro.au Newsgroups: sci.electronics In-Reply-To: <1991Apr22.000531.19590@csis.dit.csiro.au> Organization: ISC-Bunker Ramo, An Olivetti Company Cc: In article <1991Apr22.000531.19590@csis.dit.csiro.au> you write: >Hi, I acquired one of these used, but the LED display has burnt out >segments. Any idea where I can get a replacement LED stick? The HP >part number is 1990-0657. Also I notice inside a contact pad next to >the power switch pad. Is this a hidden feature; does it turn it into a >programmable or something? These wretched things ware part of a series of calculators that didn't use any solder to hold them together. I think all the 3xE and 3xC series were this way. They had the chips held against a springy circuit board with plastic clamps. They worked fine for a year or so, then started to go insane as the contacts got dirty. You could always tell which students had HP 34C calculators during a test. They were the ones banging them against the desk and cursing. HP replaced the guts free (!) after the failures started rolling in. I would surmise that you had a bad connection to the display. This would manifest itself as an entire digit gone, or an entire row of segments. Otherwise, you're probably right. Try ordering the part from HP. They carry old parts for a surprisingly long time. I doubt there are any hidden features to the beast. Probably the same circuit board was used for the whole line of calculators, with only the keyboard and chips different. - -- +----------------+ ! II CCCCCC ! Jim Cathey ! II SSSSCC ! ISC-Bunker Ramo ! II CC ! TAF-C8; Spokane, WA 99220 ! IISSSS CC ! UUCP: uunet!isc-br!jimc (jimc@isc-br.isc-br.com) ! II CCCCCC ! (509) 927-5757 +----------------+ "With excitement like this, who is needing enemas?" ------- End of Forwarded Message
akcs.rhb@hpcvbbs.UUCP (Roy Breslawski) (05/13/91)
Hewlett-Packard Calculator Service Center 1030 N.E. Circle Blvd. Corvallis, OR 97330 (503) 757-2002