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Thanks Fabio, I just wanted to work through the circuitry to see why the delayed time/div did not appear on the readout. Roger

Jose, That is one pretty scope. Consider me appropriately jealous. I have seen similar supposed horizontal inaccuracy on my scopes, but it's hard to know if that is a problem with the scope's time

Make sure to use a good contact cleaner / lube and clean ALL of the controls! Dirty switches can make for very interesting symptoms. I once acquired a 475 that almost did nothing - cleaning the

I just fixed a 7904 where 3 of these capacitors had failed (2 in the suppy, one on the main board), I was wondering if you ended up doing the capacitor replacement spreadsheet you mentionned. Regards

Hello, thanks for your answers! I checked already the caps and also the supply voltages (5V, 75V and 100V)... unfortunately they are all fine... Could someone help me out and compare my waveforms with

Hello all, I have the Tek-virus, that means: I buy a broken scope for parts to repair one of my projects, but in the end I just cannot take it apart, so I will fix that one too.... ;-) Since I love

Hello All, I have for sale some TM500 equipment for parts/repair for sale as a lot.? It is dirty and banged up a little from sitting around for many years.?? The lot includes 1 TM501 frame

Hey all, Right in the middle of working on reviving a 5S14N and PG506, my 5440 scope started losing control of the vertical position setting. It creeps up and and then down and it’s occurring on all

Hi Jeff, hi gang, Here is a link to a google drive directory containing some pictures : https://drive.google.com/drive/folders/1_9cXIKxCFtC60aFQ6zIm4ujq2paW4tSH?usp=sharing You'll find some pictures

Hello All, I have for sale a Tektronix TDS2014 100 MHz, 4 channel, oscilloscope.? It passes all self tests and self calibration and has a good display.? There are some cracks around the edges of the

Hello All, I have for sale a Tektronix TDS2024 200 MHz, 4 channel, oscilloscope.? It passes all self tests and self calibration and has a good display.? There some staining on the top of the case

Egge, many thanks I have just found that manual. Will search deeper. Still any photos of the arrangement of PSU, HPIB, option board ion a fully optioned unit will be helpful, Kind Regards, Jon

Instead of a latch, I used a small cabinet pull for the module extender I built. I don't see a need for latches for anything short of California's "big one". John

Check HV windings and HV cap. Both subject to failures, so shorting inverter load See service manual for the operation and frequency of HV section. Jon

I had a similar thing with a 2235 once. I did a ringing test that showed me the transformer was bad. Google "ringing test transformer" and you will find info. Basically it's very simple to do: Use a

If you do a little search, I repaired a SC-502 a few months back. I’ll have to go through my notes, but I do remember something about Q555. Don’t give up, they are very nice and handy little

The final outcome is negative. Fried Q855 twice, The HV supply won't oscillate and draws a lot of current that quickly destroys Q855. I give up. RIP SC502 Giovanni IZ5PQT

Hi Jean-Paul, See 24X5B/2467B Options Service Manual (070-6864-02 for SN B050000 and Above). Pdf pages 369,370 and 371. Notch (1) is where a Triangle/Arrow is marked on the Board. Succes, Egge Siert

It looks like a "broken trace " issue to me. Please ref to my 577 repair log:

Hello Larry, I would like to check, once more, that I am definitely included as I do not (explicitly) see my initials on your latest list. Given my French name in two words, my initials should be