I've recently written to someone about how to replace an SMT op amp, and I thought it would be useful here, so here it is. It's obviously useful for other SMT parts as well. You'll find that desolderi

Hello everyone, I am working on getting my Tek 495P and 2753P Spectrum analyzers fixed, running and calibrated. Has anyone here used the Prologix GPIB configurator by KE5FX (John Miles) to talk to the

I just discovered one of the ICLs in my 7514 is physically broken (one lead has let go of the body of the resistor). The manual specs this as a 5-ohm but nothing else about it. How critical is the cur

Kurt R. has posted six recently scanned Handshake newsletters; Vol 3, No 1-4 and Vol 4, No 1 and 2. These six items were published from fall 1977 to winter 1979. The content covers signal processing a

Hi guys, Another question for you on my TDS540 repair mission; When switched on from cold the traces are all off the bottom of the screen, but the trace indicator icon is in the right place. Over the

Greetings, all --- I've just joined the group. I have recently acquired a mostly-working 492p --- unusual test-gear for a hardened computer-wizard, but I' retuired now, and it looked like fun! Initial

"My recently-acquired 576 seems to mostly work, save for some very dirty contacts in the pushbutton switches. But I noticed an irregular horizontal "throbbing" in the curves. Looking around a bit, I f

Hey y'all, TL;DR: you can now disassemble and successfully reverse MC6800 with Ghidra by downloading this ( https://github.com/sigurasg/ghidra/tree/6800-specs-add/Ghidra/Processors/MC6800) language sp

Just a spoiler here, to gently encourage those owners who hope for the best, not to hope, but to DO, before damage occurs. https://groups.io/g/TekScopes/album?id=276138 The Scope was repaired, overhau

Hi all, I acquired a 7L13 in a 7613 frame in an unknown state. After replacing the electrolytic bulk capacitors in the 7613 PSU the spectrum analyzer is now partially working. So far I have identified

I have a 475A power supplies are good I am trying to do an alignment on it when the scope is cold it runs all right for a while then all sweeping and triggering stops. Power supply voltages are good a

I ended up with a TDS520A for various reasons, and have managed to get it into a working state. However, the capacitors had never been changed, so thought it was prudent to replace these. The processo

Hello - After a long hiatus, I'm back at trying to get my 230 working. I've got a working 568 and recently managed to get a few plug-ins up and running - 3S2, 3T6, 3S76, 3T77 (and half of a 3S5). I've

Hello all! I recently rescued a couple of Tek 577 curve tracers (useful!) and a half dozen Tek 2220 Digital storage scopes with GPIB interfaces (cute) from oblivion. They came from a college I used to

My favorite one is in the TSG-100 listed in the required test and calibration equipment is the 1410 video test signal set, seems normal but at around $9900.00 at the time nowhere in the procedures is

I have a Tektronix 7623A storage scope. I can easily change the distance between the top and bottom Readout lines. My problem is that the bottom line is too high on the screen, and I cannot find a tri

While working on the LVPS in my 7514, an 8uF axial lead cap exploded like a firecracker (never had that happen and am unsure what caused it at this point). It was not connected backwards and I suspect

I'm starting the process of replacing the electrolytics in the LVPS in my 7514. I started with just C810 and C811 which are in series across the first diode bridge. Those, along with L810 and L811 for

I have both a 7704A and a 7514. I finally got the readout working in the 7514 last night (faulty timer chip and faulty 2N3906 on the X output line); however, I notice that the characters in the 7514 a

Hi all, I think I'm getting closer to a working scope with my TDS540. The last step - I hope - is to replace some of the SRAM chips on the acquisition board. I've found these ones on Mouser : 972-6116