| All Bumbed Up <allbummedup@cao.net>: Feb 21 12:04AM -0500 Thanks.... |
| Fox's Mercantile <jdangus@att.net>: Feb 20 11:34PM -0600 On 2/20/20 11:04 PM, All Bumbed Up wrote: > Thanks.... The short answer is no. Their web site used to include links to their product manuals. That's no longer there. However, they do have a "contact us" link. <https://www.radioshack.com/pages/contact-us> You can always ask if they have a manual for a product. And of course, there's always eBay. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
| John Robertson <spam@flippers.com>: Feb 20 10:34PM -0800 On 2020/02/20 9:34 p.m., Fox's Mercantile wrote: > The short answer is no. > Their web site used to include links to their product manuals. > That's no longer there. You might have success with https://web.archive.org - go back to around 2005 for https://www.radioshack.com and you might like what you see... ... John :-#)# |
| Jeff Urban <jurb6006@gmail.com>: Feb 21 06:46AM -0800 On Friday, February 21, 2020 at 12:04:14 AM UTC-5, All Bumbed Up wrote: > Thanks.... BAMA has about a dozen of them. Probably won't be what you want but you, like many, come in here with no fucking details. Radio Shack never made a fucking thing, it was all made by others. Their better audio I think was Rotel mostly but a little bit of Pioneer. I won't think you want to tell us WHAT you need a manual for. I do not understand why it is a secret. You want to use SER ? Make, model, WHAT the damn ting is, what are the inputs ad outputs. If you got image hosting then pictures. What have you tried so far and what were the results ? Did you get a change in symptoms ? Have you checked the power supply ? It is completely dead ? In act what IS the symptom ? I tell you this, I studied a bit of psychology when I was younger and before they frigged it all up. (the dumbass DSM had not even been conceived) I can tell when people are lying, sometimes before they speak. But I can't read minds. That is a whole different thing and at this point in evolution is beyond our abilities. Hey, you a mechanic ? Friend of mine has a car that won't start. Help me. |
| Jeff Liebermann <jeffl@cruzio.com>: Feb 21 07:48AM -0800 On Fri, 21 Feb 2020 00:04:11 -0500, All Bumbed Up >Thanks.... No. Try. Google search: <https://www.mods.dk/manual.php?brand=radio_shack> <https://www.manualslib.com/brand/radio-shack/> <https://www.manualagent.com/radio-shack> <https://www.manualsdir.com/brands/radio-shack.html> <http://www.repeater-builder.com/radio-shack/radio-shack-index.html> etc. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
| Nife Sima <gorplop@sdf.org>: Feb 20 05:49PM +0100 > First, the obvious, stupid stuff... (been there, done that): > a) Are there any internal fuses? Often, there will be board-mounted fuses and/or fusible links to protect sub-assemblies not immediately visible. If you have a schematic (you DO have a schematic??), look for one of these symbos: > https://qph.fs.quoracdn.net/main-qimg-4b55be07eaaa83bc46a640b083cc4e4f-c Maybe there are? The part of backplane is under the CRT tube so I'll have to find a way to remove it accessing from the bottom side. The backplane's on the bottom, CRT on the right and a card cage on the left. I don't have a schematic. More on that later. > b) Corroded and/or broken trace in the voltage path. Follow the voltage for the lamps back to the source and look for anything that could cause a discontinuity. I will check that, however the traces are just under the power switch rod that goes all along the side to the mains switch. There seems to be no way of removing the backplane from the bottom side. Looks like I can only access it from the top, having to remove the CRT and the cards. I was able to find where 2 of the 4 pins go on the backplane with continuity check mode. > c) Are you sure you are using/measuring to the correct 'ground' for those lamps? In some few cases, the lamps are part of the active circuit, such that voltage must be measured across the correct points, not to the common ground. Yes, I've measured DCV relative to chassis ground and voltages between each of the pins. None of these were higher than 0.3 ~ 0.4 V, which is odd. > Again, I have no schematic, I am just enumerating the stupid-before-doing-surgery-diagnostics-as-general-practice. Please let us know. > Peter Wieck > Melrose Park, PA For the record as I already responded to a different person - my bad - the model is actually 1741. And it's not 1741A as these are completely different, newer devices. There are service manuals for the -A version but i think these aren't the manuals we are looking for. I wasn't able to find schematics for the non-A version. /Nife |
| Michael Terrell <terrell.michael.a@gmail.com>: Feb 20 09:21AM -0800 On Thursday, February 20, 2020 at 11:21:52 AM UTC-5, Nife Sima wrote: > substantially different. The 1741 is mostly analog, no readouts on the > CRT like in the later Tek devices. Sadly I can't find a schematic or > even a manual for the early model. All I have are a few photos from an Ebay listing. Even Tektronix claims the 1740A manual is correct for the 1741. |
| Nife Sima <gorplop@sdf.org>: Feb 20 06:50PM +0100 On 20.02.2020 18:21, Michael Terrell wrote: >> CRT like in the later Tek devices. Sadly I can't find a schematic or >> even a manual for the early model. > All I have are a few photos from an Ebay listing. Even Tektronix claims the 1740A manual is correct for the 1741. That's weird. I've looked through the linked manual but I could not find a matching schematic. There are 6 soldered in bulbs on two PCBs located on the left hand side while the manual shows 4 replaceable bulbs in sockets behind the bezel, below the CRT, between the knobs. https://polprog.net/~ircjunk/vectorscope/6bulbs.png More photos of the unit are in the same directory. |
| Michael Terrell <terrell.michael.a@gmail.com>: Feb 20 11:07AM -0800 On Thursday, February 20, 2020 at 12:50:25 PM UTC-5, Nife Sima wrote: > sockets behind the bezel, below the CRT, between the knobs. > https://polprog.net/~ircjunk/vectorscope/6bulbs.png > More photos of the unit are in the same directory. The manual is for the A version, not your unit.I cant find a non 'A' manual for the 1741, 1751 or 1761. which are related series. What is the serial number? It can help show where it was built. You might join Tekscopes at Groups.io to see if anyone can help. https://groups.io/g/TekScopes |
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