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I am working on a Tektronix 2467 oscilloscope and need to know if I need to put new 3.7 volt battery in this oscilloscope when to battery reads 3.7 volts.

Hey all, So, based on some exchanges in the thread about the Dennis Tillman PCB for the 577/677 build, I am definitely on my way (parts are coming). But I wanted to start a new topic on the 577 itself to get some advice. This is a 577 that's in very nice condition and when I bought it in 2020, it was sitting in the seller's garage with a trace on the screen. I realize that doesn't mean a whole lot. But here we are 5 years later and, at some point, I'm going to have to bring her back to life. So, I'm looking input on next steps. For example, should I warm it up slowly (and over what period of time) with my variac, etc. Or maybe do some diagnostics on the power supply before plugging into mains. And so on. I have a variety of test adapters but, given the power up sequence suggested in my operator's manual, the one that I don't have that I apparently need is the axial diode adapter https://w140.com/tekwiki/wiki/013-0111-00 Thanks in advance for any replies. David

I am looking for a seller from Greece who i THINK was named Qservice however no luck on Fleapay search, any help is appreciated. If a seller in the USA has the same avaiability of parts, please let me know off list. Thank You Mike Wallace

Hello everybody, I managed to upgrade my TDS620 to a TDS640 by changing resistors on the acquisition-board. I now have 4 channels active and this is working fine and the scope reports that it is a TDS640. The only thing which is bothering me is a message added in the error-log every time when I start the scope. Error: 242 wrong hardware configuration Acq number of digitizer probe, expect: 2, actual 4 This is not limiting the functionality but is just annoying. Does somebody have some advise how to get rid of this message? Regards, Wamor

I have been a fairly quiet member here for a few years. Electronics has been a hobby my entire life and has been joined at the hip with my business for 33 years. Unfortunately I must close my business so everything is/will-be up for auction. I do not have any of the good test equipment listed yet but you can see a few pictures on the home page (slide show). Please go to https://lansingmachine.com/ we have a lot of different items listed with many more to come. Due to the very limited time I have to sell/get rid of everything: If anyone is near Chesapeake Va. PM me, you could get one heck of deal on equipment.

I recently bought a 577 D1 curve tracer with a 177 text fixture on ebay for $845. It was described as being in working condition, but it's not. The CRT has no glass in it. There is also no broken glass in the thing, so the CRT was installed this way. Otherwise, it seems to be if fair condition. Collector voltage is lower than selected by 10 to 15%, one knob is missing, and one is cracked. Otherwise, not too bad. My question is this: For the money that I've already got in it, should I buy a CRT and fix this one? Or should I try to get a refund and keep looking? In either case, any suggestions on where to look (other than ebay)? Thanks in advance. Ryan

Hi all, I'm currently searching for a 013-0291-02 (or -00, -01 etc if they exist) probe to BNC adapter that isn't going to cost me a left kidney and first-born son... It looks like this: https://i.imgur.com/2EaqnTS.jpg If anyone has one of these to sell and can ship to Japan, please let me know! Or even if you could take some good photos and measurements and help to examine its construction, in the off chance a DIY reproduction could be made... Thanks! Jared

I've had a couple of enquiries from US members here, requesting clarity on the new Customs Duties - which may or may not be applicable on my 24xx series Tekscope kits, which are shipped from here in Jerusalem, Israel. For PERSONAL imports, which is EXACTLY what these are, when you buy the kits from me, there is what's called in Government language, a "De Minimus" level of US$800. That means that any PERSONAL import (in this case, up to 3 kits) from Israel to the USA is EXEMPT from US Customs Duties, when the value is less than US$800, and 17% when the value is more than US$800. Commercial imports (which these kits are not, unless you buy a number of kits for a commercial enterprise) from Israel are taxed at 17% from the first Dollar, irrespective of the value. So, the bottom line is that if you (a US Resident) buy 1 or 2 kits from me, valued at about $70 each, then you are exempt from the new US Customs Duties. I hope this helps to clarify the issue! Regards Menahem Yachad www.condoraudio.com

On April 3rd, I picked up a 2213A. While testing it, I noticed that the trace does not fill the whole display regardless of position settings. I tried messing around with the controls to see if I could fix it without opening the scope, but I had no luck doing that. Also, I found that sometimes a signal was displayed even when the trace was set to ground. The other day, I opened up the scope (the cover won't come off all the way, but it comes off enough for me to access the boards) so I could calibrate it. I bought a copy of the 2213A service manual, and proceeded to adjust the horizontal amplifier gain. However, even with the gain turned to the max, the trace does not fill the display. Both the trace after adjusting and the mysterious waveform are shown here: https://i.imgur.com/46gAXwu.jpg The wave disappears if I ground the shroud surrounding the CRT. I will try to get the cover off so I can check connections and voltages. Can someone help me work through calibrating this scope and getting it to work properly? For your information, this is my first ever oscilloscope. If you want more information and/or details, please let me know; I would be happy to provide them. By the way, how do I properly reply to a reply on a topic? I tried posting a reply 3 times the last time I posted, but none of them showed up.

Hello guys! Does anyone know of any 205 carts anywhere? I would really love one for my 556. Best regards, Alex

Hello friends, I’m looking for the service tools needed for the digital portion my tek 7854: the MicroLab I (067-0892-00), the Diagnostic Test Interface (067-0911-00) and the Diagnostic Memory Board (067-0961-XX). Interested in hiring as well buying them, for troubleshooting an issue that started recently… Tnx in advance! Alberto

Hi folks. I recently purchased a Tek 2247A scope and upon testing it for the first time, it locked up when testing the B sweep with a msg that said 'INVALID INTERRUPT FROM 0993:F082' When I rebooted, the screen has an indecipherable error message that appears to read something along the lines of 'Part Number 100-xxxx-00' with a bunch of exclamation marks. I couldn't clearly read what the part number as it was out of focus and could get it to focus well enough to read the numbers. The 'Auto Level' and 'Auto' LEDs were flashing which indicates both a RAM and ROM problem according to the service manual. The SGL SEQ LED was also flashing but there's nothing in the service manual that mentions that LED, or at least nothing that I've found. I let the scope sit for 10 minutes and it booted back up in service mode and gave a failed battery warning, and ran through self calibration. I left the unit on and it locked up after about 10 minutes with the same error as before. After the reboot I went into the service menu and ran the self test 'until fail' and the test ran for 30 minutes without issue. I also ran through the self calibration once more. It's now been powered on for a few hours without any problems or locking up and all functions 'seem' to be working as expected. Thoughts? Would something like this be caused by a battery issue? That seems like an easy fix but if it's something deeper, I'm not sure if I'd want to chance it. Thanks! Jay

There's an item on US eBay that I can't purchase because the vendor blocks non-US buyers. Is there someone who's willing to purchase it for me ($200), and ship to the UK using a reputable courier (UPS/Fedex/???) If yes, please contact me off list... The item should fit in a package about 8" x 6" x 4" and weigh about 1lb. or less. I'd like to keep shipping cost down, so if you have a contract with a shipper that would be even better. If the option to pay UK tax and duty at shipping end is available that might be good (depending on costs). Please contact me off list to arrange mailto:david.partridge@... Cheers, David

Greetings, I have 2 SC504 scopes. I have done a lot of restoration work on both these units. They are both working now, but I am not satisfied with the trace having ghost. Please take a look at the photo I posted some days ago. At that time I had 1 SC504, since then I have bought another one. BOTH of these scopes display EXACTLY the same ghost trace. When I bought the second SC504 I thought I would have the chance to swap out the CRTs. /g/TekScopes/photo/300558/3883505?p=Created%2C%2C%2C20%2C2%2C0%2C0 Thanks for the responses. Barrr

Hi all, I have created a new photo album called "Tek User Comments". It's for interesting or amusing comments found written in Tek manuals or as graffiti on equipment. I started it off with a "cry from the heart" obviously written by a frustrated technician who had to calibrate a 7T11. Enjoy! Morris

Hello I have a 2712 that i picked up “parts only” on eBay. I replaced the two button cells and it works well aside from failing two Amplitude Normalizations. BW Filter Ampltd (Lin) FAIL Preamp & Det Gain FAIL Wondering if anyone can point me in the right direction so I can fix it.

Does anyone dare to do it with an oscilloscope tube? https://www.youtube.com/watch?v=RI88e9cHAkk

Good Morning All: Got a 784A where the PSU is bad (this model: https://jvgavila.com/tds524a_6.jpg) one of the capacitors has leaked and may be exploded to the point where the fiber glass weaving of the PCB is swollen and exposed. It may be the +5V @22A supply. Since these are large PCB traces, not to many are destroyed, I may attempt to repair the area, having the schematic would help. Thanks José

Jose Luu <jose.luu@...> added the photo album 784A PSU REPAIR ( /g/TekScopes/album?id=301696 ) : images of burnt and repaired area of a 784A PSU

Hi All I have a Tek 2465 which has a small fault I am hoping to repair. This is the 'sleepy eye' power indicator on the front of the 'scope. The power switch itself works fine; but the indicator shows the high-vis 'on' state even when power off. It's a small fault but I would like to sort it. I have managed to find what I think is the replacement part. I had hope it was going to be straightforward to fit it to the end of the shaft running from the front panel to the switch; but having taken the outer 'sleeve' of the 'scope off, it looks like there is going to be more work to get access than I thought. I have stripped this scope down before (I 'recapped' it a few years ago) but I have forgotten most of the order in which I need to do things. Any pointers as to what I should do next? Thanks, Jon N