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The recent comments made me look at the picture. Yes, that intensity looks really cranked up too high, obvious from the blooming. The retrace blanking isn't perfect, so some will show through when

@David Holland thanks for your post David, yes I've seen a good e study from a German fella here https://www.wellenkino.de/557/viewtopic.php?f=5&t=17 translated basically it was an easy mod &

@Eric thanks for checking your stock Eric but Hakan seems to have confused my post by putting lots of spurious part numbers I've checked the Tek wiki site and cant find the 154-731 CRT listed so i

Where: Museum of Radio and Technology, Huntington West Virginia When: Saturday, March 16th 10:00 am to 4:00 pm Come help us clean out our storage buildings. We have a large quantity of test and

500-series knobs are plastic over a metal insert. Dave Wise ________________________________ Sent: Thursday, February 15, 2024 8:02 AM To: [email protected] <[email protected]> Subject: Re:

Have you worked on any high-rel or military equipment with knobs? They usually used knobs that may be plastic (sometimes bakelite) but the knob is molded over a brass or aluminum insert. The set screw

Bo brave on progress. All the decades old knobs suffer as the plastic is stressed by the design and ages to crack. Even if set screws are tightened carefully the knobs tend to split at the hole of

Hello, have no had 2465A in decades but these comments apply to 2465B and perhaps also to 2465, 2465A. Get service man for your model and serial range. see long threads on EEVBLOG: Tektronix

[email protected]> wrote: AM503 current probe amplifiers, and they all work absolutely fine. They're definitely not the A or B version, just very basic (and very fixable) analogue ones. So I

Hi, Check the sockets for the hybrids, they can be faulty. I had problems with it in a 2440. I cleaned it with IPA and reseated them. Szabolcs Nathkrul <nathkrul@...> ezt írta (id?pont:

A quick way to determine if one CCD is bad is to swap them between the channels and see if the problem moves to the other channel. They are easy to remove and come off with four nuts. When

Re-attaching the ground wire made zero difference unfortunately, although the test did take longer to fail. I'm going to attach a signal to both channels and trace it back, hopefully that will give

Hi, If you followed the silkscreen on the PC (it has an error), you probably swapped 2 capacitors locations. One of them needing a 100+ Volt one, where now a 35V one is installed. If you changed the

@Harvey Left the lab for the day, but I did check the voltage drop across that resistor R624 0.33ohm. I can't recall what it was off the top of my head, but I'll let you know tomorrow. I thoroughly

Hi Don, That link seems to be dead (it's apparently been "temporarily down" for years, judging from the Wayback Machine's archives). Perhaps you could upload the manual to tekwiki (assuming that the

Kevin, John's theory is best. If the beam intensity is set too high, it is possible to get this artifact as well, so give that a tweak and see if the ghost line disappears before the main trace gets

Kevin, This looks like it might be a trace blanking problem. The beam is supposed to be turned off while being re-positioned to the left of the screen, but it looks like it is staying on. The

I checked the Tek stock and I have 154-731 tubes not 763s Eric

As far as I'm aware, there are only 3-module and 6-module wide TM5000 mainframes. Many of the TM5000 modules won't fit the TM500 mainframes not only due to the GPIB connector but they also have

The TM5000/500 mainframes have a bulk supply from which is derived 5.0 volts.? The value of that supply is not important unless it's 8.0 volts or less.? The regulators of that time used NPN