I'm going to buy the used knob from the member who offered it above, and then try to make several Tek knobs. A coworker with a lathe is making metal inserts, and with some decent CAD, I'll probably

I do have a few 314/335 feet now but I'm clueless when it comes to the 3D modeling software. I'm good at a lot of things but 3D drawing has never been one of them. I installed Sketchup a while back

The scan of the service manual from Artek Manuals covers the late 7854.

It would be nice to know what caused the failure. CR1947 is there to prevent reverse breakdown of the base-emitter junction of Q1948. I would also check for a shorted capacitor or open resistor.

TekScopes@...> wrote: ​I don't have an original foot to work from, so that wouldn't be feasible I'm afraid. If someone wants to send me one, I could work from that (I'm in the UK). The

Any chance you can create a 3D model of a 335 foot? I'd like to try to print some for my 335 whose feet were completely perished when I got it. -- Soren

If I was going to do that, I would use a stronger and thinner wire like the lead from a 1/4 watt resistor or small signal diode like a 1N4148 to avoid damaging the socket. If there is a problem with

TekScopes@...> wrote: made of a tough material, though I managed to get some original ones for my 465B from a very helpful chap on this list. Malcolm [Non-text portions of this message

Malcom, those look great! FYI, There's a guy selling reproduction feet for the 4xx scopes on eBay (not the lathe-turned round ones‎.) I won't name him since he didn't give me permission but some of

Perfect - Thanks! I buzzed out the rest of the transistors and diodes across the A10 board, and found only one more - CR1947.

I would expect http://www.shapeways.com/materials/strong-and-flexible-plastic to be a good starting point.

Hi, I modeled a replacement cable-wrap foot (actually for my spares 475). It's on Thingiverse if anyone would like to make use of it. http://www.thingiverse.com/thing:1410827 I just needed

http://www.reprise.com/host/tektronix/reference/default.asp http://www.reprise.com/host/tektronix/reference/default.asp

Found 3 shorted transistors so far: Q1942, Q1944, and Q1948. Might be a few others in this area. Any well-regarded cross reference for some of the Tek transistor p/n's?

What I can do while I have the amplifier/driver out is take a 22 gauge wire, insert it into the socket, and check continuity/resistances while I give the wire a wiggle. If one of those sockets shows

Hello all, This is very interesting topic, to which I was somewhat familiar about 3-4 years ago. Anyway: 1- I am interested in such a board, count me in, if ever gets produced. 2- I am also

The problem with the "replacement" knob on the 'bay is that the Al insert is more in front (from the faceplate) than with the original. The hex fastening screw is as well. I'm not at all convinced

hi Laura, tried your procedure to no avail While I was there I also tried the so called EXERCISER 03 (EAROM clearing) described at page 6-16 of the manual ( both in CAL/NO CAL position) : also to no

It's a matter of what kind of precision you need with regards to what you work with. I became a little frustrated with drift of some less-than-best reference oscillators in some of my test equipment

The dongle makes economic sense if there is no keyboard (and no plans to add one). One D connector and a standard backshell - not costly at all, and no internal mods (except for plugging in the new