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Hi everyone, I bought some time ago (2017) a TEK 2465B that I didn't have too much time to play with (having 2 kids and a travelling job doesn't help!) I have been toying with it lately, and I've

Welcome, I have 1 7401 with this Plug ins: 7A18A , 7A29 , 7B53A , 7b15 I need help rebuilding it. It turns on, and If I give a little smack and play with the buttons, eventually I got a distored

Welcome, I'm not afraid, my name is Oscillator Sherman You have any vidoes or PIctures of the monster oscilloscope I just bought a 1ghz tektronix 7104 for 30 dollars Partially working. Here is my

Hello, I'm Armando I'm new here.. I just bought a 7401 for 30 bucks. , it turns on, and if I play with the buttons and give a little smack , I get a distorted, extra wide and chopped up trace.

Hello all I just got a 7104 for 30 dollars. With all 4 plugins. Including the 1ghz one. I need help fixing it. It powers on but the trace is wide and choppy . I created a video. Please see it and

That was my conclusion. But the UI is so bad that I thought there might be a variable delay line in there somewhere that would adjust channel skew. I've also discovered it is buggy as all hell. You

Reg, If you display the two channels simultaneously then they share the same time base speed and position. I don't see how you tried to align the rising edges. On my CSA's I do this: display both

Personally I'd replace C911: 22uF 15V tant bead on a 13V PSU rail, diagram 17 (not the PSU diagram!), and IIRC there are a couple of others on that rail, hidden on the other diagrams 7, 9, 11,

In switcher parlence, the "start up" capacitor is called the bootstrap capacitor because the supply picks itself up by its bootstraps. It is often charged by using a high wattage resistor connected

Switching supplies can be a problem when they fail. I recently had a Agilent VXI E4808A chassis that the main power supply failed, at least its 12 volts out did. That power supply is huge with a

SMD electrolytic capacitors are a tricky problem in several ways: First, they are easily damaged by the heat of the reflow oven, and solvents that may be used in cleaning flux,... though

Does anyone know how to remove the complete sampler block from the printed circuit board? I ask since I'd like to replace the channel select switches. The solder lips are hidden between sampler block

I have to agree with Chuck. Most test equipment with imbedded/integrated switchers are going to be very difficult to qualify parts if working. Their functionality can be extremely subtle. Blanket

Hmmm...? Did he die-bond, wire-bond, and package the FPGA or just solder it onto the board?? Not so impressive if it's the latter.? Still, the link to the website shows microwave devices being

My take on this after replacing thousands of surface mount electrolytic capacitors is replace them all when you get a new to you device that is more than ten or so years old. Switchers are harder on

I think I figured out why the calibrator rise time measurement doesn't read to spec. I warmed up the 11810 for about 40 minutes to do the Enhanced Accuracy adjustments. That seemed to go fine except

Replace Rifa mains interference suppression delayed action smoke generators on sight; if there is any sign of cracking in the transparent case, don't even turn it on. Where there are tantalum beads

Tough question. Yes, switching supplies are inherently harder on components than linear, but they also use much better parts. And they are more likely to be designed using math, rather than rules of

I have a few questions about power supplies and would like some opinions. Are switching powers supplies inherently harder on components than linear power supplies? If you picked up a 70's-80's

Hi Reginald, It is in the archives: /g/TekScopes/topic/7659008#141241 Enjoy. Egge Siert