Hi guys Happy New Year to all. I'm new in the group. I've bought a working (supposed to) Tek 485 for a few euros here in France : received it and tried it for ~10mn. I powered it off and cannot power

Hello all: Having replaced the PSU (ref. 2465B Power Supply Precautions) have just powered on, J119 voltages perfect, test have some issues eg TEST 05 FAIL 42, but basically working. Had no trigger, t

Hi folks, I have been trying to read the content of the Dallas DS1486 of my TDS684A before trying to desolder it. The battery is really low since it is necessary to run SPC calibration every time I tu

I have a very nice 549 that I have owned for nearly 35 years. It worked flawlessly at first, but then began showing the infamous epoxy HV transformer potting issue. Back when it started doing this ('8

Hi I am trying to fix an tektronix 7L12 spectrum analyzer! When measuring a frquency-say 50Mhz-it is offset on screen--the zero hertz are shown clearly with same offset!. Have any off you some experie

Hello, I have been lucky to find a P6042 current probe with a fully functional coil and hall sensor. The only band thing is that the cable to the sensor was broken in at least 7 places. It is repaired

Hey folks, Wondering if there is someone here who is a readout system whisperer. I have me a 7904 that wasn't working when I got it. It's a rather interesting one, with all available options equipped.

Dear Sirs, I got hold of a 7L13 spectrum analyzer in a 7603 mainframe and I have two questions to ask you, first from the manual the tuning knob can be pushed or pulled to change the tuning speed, but

I have a 214 that I bought a number of years ago. It had bad batteries, no probes, a broken store/normal/reset switch, and (as I find out) a bad channel A vertical gain switch. Fixed the batteries by

Hi, recently I have become aware of this group and the interesting topics discussed here. For more than 40 years I have been fixing almost anything as a hobby - from 1930s radios and all kind of TV se

Hi, I have a Tek 2235 serial (no letter) 203946 with a long persistence orange screen. On the front it states "opt 76", which I cannot find in manuals or catalogues. Could someone point me to more inf

Hi, Since I’ve had this scope (2235), it’s one that I enjoy using because it’s fairly light in comparison to my other ones; the form factor is convenient. And it gets the job done for my needs. Howeve

Hi guys, Just putting the word out. I’m looking for a 465B tigger pot with switch, parts number: 311-1192-00 QService doesn’t have one at the moments. So if you have one for sale, hit me off line. Tha

With a spare HV multiplier sent from the UK by a fellow radio amateur, I managed to get the HV supply in my 465 working. (Has anyone told you guys that working on these things is NOT easy?) The HV pro

New member here. 2 Months ago purchased an older 465 scope on the auction site. It worked for approximately 2 days begore the trace went dead. After lengthy searches on this and other forums I traced

I am working on 2 Tektronix function generators. An FG 507 and a FG 502 both 2 Mhz. The 507 is on the bench currently and I am having a weird issue with the frequency selectors. Everything above 100X

Hi Jon, I always stick a repaired/recapped power supply on a dummy load and check its voltages on the bench before I put it into a scope. Saves a lot of frustration, and damage. If you know the supply

Hello All, New member here. I have a Type 1L10 Spectrum Analyzer plug-in that I've owned for several years. It's nice and clean, however the previous owner removed some parts for some reason. It was m

Hello all. My name is Joel B Walker. I have been interested in electronics all my life having grown up in my father's shop. I am a self employed repair tech, working on anything electronic plus any ty

I'm in the process of finishing up the recapping of my 2235A, it started out noticing the condition of the RIFA caps in the line filter and the main board along with the IEC inlet filter, and kind of