IIRC 1he vector analyzers had X-Y capability. This would be a good display for a home built curve tracer. Glenn

I have a number of tantalum capacitors in my spares. Is there a way to determine if these are prone to failure? I am not a design engineer, but, am toying with the idea of building a test jig to place

Try cleaning the vaporized flux residue from the valves on the pump. Cleaning the flux from the carbon vanes in my Pace desoldering station has fixed a low vacuum problem. Glenn

Check a hobby shop or a store that caters to crafts. Glenn

I have a pdf if that will help. Glenn

Find and replace the shorted tantalum capacitors. Glenn

Do a search for microwave oven parts, There are other vendors for parts. Glenn

Check the interlock switches. Glenn

A DSO samples the input signal. If something you are looking for happens at a sample time all is good. If what you are looking for happens between samples as far as the display is concerned it did nor

The 3T77A is spoken for. Glenn

Does any one want a 3T77A for $30.00 plus postage? It is in good condition, but, was raped by an audio fool for the 6DJ8s and 6688. The nuvistor and Q135 are also missing. Otherwise it is complete. Th

Here is the reason that flux should be cleaned from boards. I always use a RMA flux and clean with 91% alcohol. Glenn https://www.kester.com/Portals/0/Documents/Knowledge%20Base/Publications/Internati

RTL cookbook available for download: https://archive.org/details/RTL_Resistor-Transistor_Logic_Cookbook/page/n13/mode/2up Glenn

A web search shows Frequency as 500 MHz as guaranteed minimum. Glenn

I use naptha aka goo-gone aka lighter fluid. I have not damaged hard plastic, yet. Glenn

The FETRONs are not generic for all uses of a particular tube. The biasing inside the FETRON is unique to the application of the tube. For example a FETRON for a 6AK5 will not replace all 6AK5 tubes.

I have manuals for S51 if you think they may be similar. Glenn

Use RTV that is labeled oxygen sensor safe. The bad stuff cures and releases acetic acid. You can smell it when you open the tube. The good stuff cures with IIRC methyl alcohol. 73 Glenn WB4UIV

How many times has the digital scope lied to you because the glitch you were looking for was between samples? Glenn

In the 75 Ohm vs 50 Ohm world, the two are completely interchangeable as far as mating is concerned. The 75 Ohm BNC connector is missing dielectric between the center pin and the shield. Based on this