https://www.youtube.com/watch?v=JOeG1-_2UBk That Sears commercial, apparently to repair TVs in the early 1970s you stared intently into what appears to be Tektronix 500 series scopes that are hooked u

Could use some help here: I've always had persistent high frequency noise on my scopes. So far I've been focused on lower frequency signals with reasonable signal strength. Between BW Limit turned on,

I have a sick AA501A that I am trying to bring back from the dead. I am wondering if anyone knows of any replacement reed relays. The existing part is Tek number 148-0134-00. The part number on the pa

Hi Folks, Just picked up a Sony/Tek 335 from you know where. Included probes, case, and original manual. Even showed traces in the photos. Unfortunately, good ole' USPS delivered it. When I powered it

For those with a 2465A (or maybe B) version; I just received a 2465. Very clean and good looking inside; probably heavy usage, though, considering the status of the blower: noisy. Another thing I noti

On the calibrator ground thread, someone mentioned finding a miswired ground resistor, original from the factory. I thought it would be interesting to let people list the Tektronix factory assembly er

I just did a little searching for fast probes that match 50 ohm (sampling) inputs. The table on Tekwiki shows only P6150 or P6156 would have the necessary speed. But on ebay the prices are an unpleasa

For the HV supply needed to power the Spectrum Tubes (long thin glass tubes filled with various gasses) I own I need a HV transformer that was relatively common 25 years ago but not I can't find any i

Somehow, I have accumulated more of these than I need as I have acquired various accessory kits for my 519 in a quest to have one complete set of accessories for my 519. So, in the interest of helping

For about 15€ I bought this 465 for parts. Seller said it didn’t turn on at all. I opened it up, and indeed, it definitely can’t function. There are apparently 4 missing components in the power supply

On ebay, miss-listed as a manual for a 067-0554-00, this is actually a manual for a 067-0544-00, a calibration plugin for the 647A. www.ebay.com/i/133659054167 I don't know how useful or common this i

Good day, While working on a troublesome plugin, I had cause to open up my TM504 to check the power transistors (as one does). I am surprised to find that Q22 and Q30 (an NPN from one middle slot, a P

I've just noticed something odd about the calibrator outputs on my 535A scope and 127 plugin power supply. They both have a 0.25R resistor in series with the calibrator socket's ground connection. The

Strange ad. He says 2x 465B, but the picture shows 2x 475 plus something I don't recognize. Located about 45 min from me.. No connection. Bob https://sacramento.craigslist.org/ele/d/auburn-oscilloscop

I made a casual comment in another thread that the early (pre SN B250000) 465 did not have a "mesh" in it's CRT. This was based on it missing in the CRT schematic diagram in my early 465 Service Manua

Hi All, I have a Type 162 Waveform Generator that I bought many years ago for parts. I never did anything with it and it's still all together, so being offered to anyone for the postage. Condition: Go

Hello, as I had initially planned my objective was to exchange all and every "suspicious" capacitor and these selenium rectifiers. Right now I have got a basically well operational instrument, but not

Hello all: Seeking a cross ref of all Tektronix lamps TEK part # like 150-0090-00 spec volts, current, envelope instrument used in, industry lamp type # Would be very handy! If it does not exist perha

I have just refurbished and calibrated my 7603. The frame itself showed 2.5ns rise time and bandwidth was 140MHz. With 7A26 system rise time is 3ns and bandwidth seems to extend to 130MHz. Small dip a

The Grayhill 71BDF30-20-2-AJN multi-way switch(Digikey GH7108-ND) is out of stock at Digikey ☹ Mouser has a few (16) and lead time is 16 weeks. Master Electronics, Electrosonic, and Verical also have