I have a TDS420. Every single SMD cap was leaking along with a good deal of power supply capacitors. After replacing all of those it works fine. I would make sure to check for PCB damage from the

Subject says all If anyone is interested I have 3 P3010 probes (10x 100MHz) probes looking for a new home. David

I found myself looking at books from Alfred Morgan (The Boy's Second Book of Radio and Electronics for example) that I nearly wore out the public library's copy back 50+ years ago. This has brought

<ko4nrbs@...> wrote: As digital scopes go, I don't think the TDS400 series is a good choice at this time, for the following reasons: 1. low sample rate of 100MSPS 2. very limited

from Tim P (UK) I don't mean to start a 'me too', just to say what a great find !! Been browsing the electronics magazines we had in the UK - Electronics Today, ETI, Elector & c. That inspiration

Jelcke, thank you for sharing this site. A wealth of information 73 Richard W4MCD

thank you for this post it will be a big help

This site has a wealth of online and free publications on electronics and Ham stuff: https://www.americanradiohistory.com/ Enjoy! Best regards, Jelcke de Boer

Ernesto: There are at least two types of "mu-metal", with different characteristics. The Perfection Mica brand has "netic" and "co-netic" for high flux and low flux applications. The thin foils

Hi Dave : Thanks for work on them , they are very useful information for us ! Rd Tony 從我的iPhone傳送

Thanx Dave, important piece of information for anyone who´s interested in. René

Hi John, Yes it is. I am in the ARRL. I am OK with reading publications as pdf documents online but being old school I prefer an actual book. It defeats the purpose but I often print out pdf books I

Thank you Aldue

Hello Richard, QST is online for ARRL members. Prowl around the net and you can probably find what you want for cheap! Digging in the new stuff really not that hard to grasp. In fact, we old timers

Hi Richard, I shall dig around in the morning. 73 aldue yahoo.com@groups.io> wrote:

Take a Dremmel with one of those abrasive discs and run it lightly  across the connectors and then try to solder them. Works for me almost every time. P.K.Ka5obi

All, Here's an update on the Tek 222/224 Battery Replacement project. After a few go rounds, I was able to create a BOM that the fab house could source. Unfortunately, the parts that had been pending

Hmmm, interesting that no one has pinpointed a cause. Maybe it's that U1714 going flaky? Sean

Hi Rick, Thanks for your inquiry. It's a little late in the game for this round, but in all likelihood there will be a second round in which I could accommodate some design changes. Being unfamiliar

Several years ago, I owned several TDS4XX 'scopes and had to repair their SMPS; at least models TDS420 and TDS420A. It turned out that the exact same PS's were used in specific LeCroy 93XX-series