- M-AUDIO SCHEMATICS NEEDED - 2 Updates
- In Need of tone genertor/cable tracer - 1 Update
- Tek 465 degree-of-difficulty repair - 4 Updates
| guijarrosoy <algenta@gmail.com>: Aug 30 09:47AM -0700 Hello colleagues. I am in neeed of schematic and service manuals for TAMPA model M-AUDIO mixer. Unit is noisy. Tradicional techniques did not work. (I.E. Contact cleaner on potentiometers, etc) Any help is appreciated. Al. |
| bitrex <user@example.net>: Aug 31 12:27AM -0400 On 8/30/2021 12:47 PM, guijarrosoy wrote: > Unit is noisy. Tradicional techniques did not work. (I.E. Contact cleaner on potentiometers, etc) > Any help is appreciated. > Al. Tampa's a mic pre-amp. Do you have the mic/line switch and impedance selection knob configured correctly for whatever is plugged into it? You have a mic actually connected when you're listening for noise on the "mic" setting, yeah? |
| three_jeeps <jjhudak@gmail.com>: Aug 30 05:46PM -0700 > Their job is to facilitate cable *identification* where multiples exist. > OTOH a buried mains cable reveals it *location * by the magnetic field created by all the damn AC current flowing in it !! > ..... Phil Thanks for pointing out the inaccuracy of my post. My task is one of identification. I just bought an inexpensive one from one of the references. I'll use my flashlight arrangement as a backup. I did learn something from Jeff about cable locators - TY. Will file that away as I may be doing some of that in the future. J |
| legg <legg@nospam.magma.ca>: Aug 30 03:36PM -0400 On Mon, 30 Aug 2021 08:01:01 -0400, Bob Engelhardt >and hours to fix a $100 scope". I do have the service manual & another >scope. >Thanks, Bob It's a relatively simple part of the scope, if it's an accurate diagnosis. Helps if you have a working scope to repair this one. https://groups.io/g/TekScopes/messages RL |
| Phil Allison <pallison49@gmail.com>: Aug 30 02:45PM -0700 bobenge...@gmail.com wrote: ========================= > case: "It could be any number of things and you'll likely spend hours > and hours to fix a $100 scope". I do have the service manual & another > scope. ** You are asking a " Schrodinger's Cat " type question. The cat can be thought dead or alive - until you open the box. ...... Phil |
| Trevor Wilson <trevor@rageaudio.com.au>: Aug 31 10:03AM +1000 On 30/08/2021 10:01 pm, Bob Engelhardt wrote: > and hours to fix a $100 scope". I do have the service manual & another > scope. > Thanks, Bob **Who knows? Download a service manual and get to work. The 465/b is an excellent 'scope and built to last a VERY long time. |
| three_jeeps <jjhudak@gmail.com>: Aug 30 05:39PM -0700 On Monday, August 30, 2021 at 3:34:42 PM UTC-4, legg wrote: > Helps if you have a working scope to repair this one. > https://groups.io/g/TekScopes/messages > RL I second the motion to join & post on the TekScopes message board. A lot of *very* knowledgeable ppl hang out there. IMHO, I'd spend 15 mins with it plugged in to understand more clearly the characteristics of the malfunction. If you put that info in your post, you might get a bit more of an answer along the lines you are looking for. A 465 is a very well-known and popular scope. It was standard gear for DEC and IBM field circus back in the day, and a typical scope in a lot of college EE labs. good luck J |
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