Personal Comments
Today was my annual warehouse spring cleaning day, so it was a good opportunity to take a “family photo” of my tube tester collection. My collection changes all the time, sometimes daily. I did include all of the models that I use everyday for tube sales and bench servicing, and also models that I “rotate […]
my tube tester collection Read More »
Here is a truly historical item — a LEEDS & NORTHRUP CO. Wheatstone bridge. It has Western Electric K.S.3011 designation. The craftsmanship and build quality of this device is truly remarkable. I cannot fathom how much money it would cost to build this same device today using identical components. The unit consists of a large
Leeds & Northrup bridge, and Eico 221 VTVM Read More »
As a fan of vintage tube equipment, it should come as no surprise that I prefer older quality computer equipment. In this article, I explain how to repair “Scanner System Failure” problems in a vintage HP Officejet R-series multifunction scanner-printer. Model R40xi is shown in the photos, but all models (R40, R40xi, R60, R60xi, R80,
Repairing HP Officejet R-series Read More »
A common (and totally random) problem with GM vehicles that have the Passlock / Passlock II anti-theft system is that the vehicle will suddenly refuse to start. The problem is a poorly designed GM Passlock anti-theft system that erroneously enters anti-theft mode and disables the fuel injectors. GM should be forced to recall this Passlock
Malibu will not start, disable Passlock II Read More »
Discolored getter flashing (brown or black marks) does not mean that a tube was used. This fiction is believed by both uninformed buyers and seasoned tube jockeys. This myth seems credible because some new tubes have perfect shiny mirror getter flashing; therefore the assumption is that brown or black stains in the getter flashing must
brown-black getter flashing does not mean ‘Used’! Read More »
