ASR 33 buzzing

from the input coil as the last one. The tension from rotating should

On 14 Oct. 2016, at 6:13 pm, drlegendre . <drlegendre at gmail.com> wrote: " I'm assuming it must be round.. although directly under the fuse is a little black box connected to it. I note when I plug it in on Line sometimes there's a single metallic clack from the PSU area and sometimes it's multiple..lioe someone's operating a telegraph." The start/run caps can be tubular, rectangular or 'bathtub' shaped. Again, this is just generic advice and I can't say which shape(s) were used by TTY Corp. As for the one clack vs. telegraph-like clacks, that sounds an awful lot like a relay or solenoid that sometimes acts OK, and other times, sits there fluttering as it lacks sufficient current to pull-in or hold the relay armature. Bad filter caps in a DC supply (to the solenoid coil..) is classic for this. Ever seen a one of the cheap, obnoxious 120 AC buzzers they used in old stoves and so on, as a "done" signal? They're just an AC relay designed such that the coil cannot hold the armature between cycles - so it just buzzes like mad to alert you to the status of yr Pizza rolls. =P On Fri, Oct 14, 2016 at 1:46 AM, David Collins <davidkcollins2 at gmail.com> wrote: > You might want to try moving the keyboard forward and away from the > operating lever that connects to it at the back right corner of the > keyboard. If the keyboard is pushed too far back on that lever it can load > up the mechanism and stall it. > > It will need to be re-aligned to get the keyboard working again but that > will need to be done anyway - it's pretty sensitive to movement. > > You should be able to turn the mechanism by hand but it also may need to > be loosened up if it hasn't been used for a long time. > > The 33 I restored blew fuses initially and I thought it had a bad start > cap. Turns out the start cap had been removed and my unit doesn't seem to > need it. Once I rotated it a few times and put grease here and there it ran > ok. > > If you can get it to work by turning it by hand while it's buzzing then a > bad or missing start cap may be your issue. > > David Collins > HP Computer Museum > >> On 14 Oct. 2016, at 4:56 pm, Brad H <vintagecomputer at bettercomputing.net> > wrote: >> >> >> >> I missed those somehow.. thank you. Got a lot to learn with this beast! >> >> >> Sent from my Samsung device >> >> -------- Original message -------- >> From: COURYHOUSE at aol.com >> Date: 2016-10-13 10:30 PM (GMT-08:00) >> To: cctalk at classiccmp.org, vintagecomputer at bettercomputing.net >> Subject: Re: ASR 33 buzzing >> >> >> did you get the links we sent you over >> on the greenkeys list for sources on 33 manuals and paperwork >> we sent you? We did not get an acknowledgment. thanks >> Ed# www.smecc.org<http://www.smecc.org> >> >> >> In a message dated 10/13/2016 4:37:20 P.M. US Mountain Standard Time, >> vintagecomputer at bettercomputing.net writes: >> The >> buzzing definitely seems to be coming from the motor. I put a >> plastic >> tool to the casing and could feel it vibrating. However, I can turn >> it by >> hand (clockwise) and see all the gears and striker mechanisms >> working. >> >> It did manage to work briefly yesterday.. it did kind of a >> 'reset'. But >> yeah.. not today. >> >> -----Original >> Message----- >> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf >> Of Paul Koning >> Sent: Thursday, October 13, 2016 4:28 PM >> To: General >> Discussion: On-Topic and Off-Topic Posts >> <cctalk at classiccmp.org> >> Subject: Re: ASR 33 buzzing >> >> >>> >> On Oct 13, 2016, at 7:14 PM, Brad H >> <vintagecomputer at bettercomputing.net> >> wrote: >>> >>> Posting >> around hoping somebody might be able to point me in the right >>> >> direction. I tried greenkeys but no response. >>> >>> >>> >> >>> I have an ASR 33 I got. When I plug it in on Line mode there is >> a >>> clicking in the power supply area and nothing else. If I put >> it to >>> Off or Local, there is a loud buzzing sound and eventually a 2A >> fuse >>> on the back left side of the machine blows. It's like >> something's >>> stuck but the noise is kind of hard to pin down. >> Wondering if there's >>> any Model 33 experienced guys out there. >> :) >>> >> >> Given the blown fuse I'd suspect a stuck mechanism, so the >> motor is stalled >> and you're getting overcurrent. Try turning the >> motor by hand to confirm. >> >> >> paul >> >