- 2024
- Nov
- 8
An Olson TE-198 C-R Analyzer - Some notes on parts.
One of the parts in this device that probably needs replaced is a big capacitor in a metal box.
I was looking at this going where have I seen this before, and how do I replace it.
A quick search and yes - it’s a metallized paper capacitor, and was probably used as a motor start capacitor. That style of device is still available, but it’s not common these days - metallized films have taken over the market. The value of 4μF is kind of odd as well, but shows up both in modern motor start caps, as well as capacitors for speaker crossovers. Since both are non-polarized like this one, replacing it will be easier than I expected. 2% parts are a bit harder to find, but available with a little searching.
It also gave me a date of manufacture - 1968. I’m surprised that Phillips Radio Corp was still supplying 6E5 eye tubes at this point in time. It also revealed how poorly the previous owner treated this thing. Look at the solder all over the wire!
Some other things I’ve noticed about this unit:
- The threadlocker that was used is very very good. The meter and the dial pointer were both held in with screws that were coated with a white paint-like substance. When I removed the dial pointer screws, they both snapped. These seem to be closest to a 4-40 3/4” Oval Head screw.
- The paint on the knobs on mine was flaking already, and an ultrasonic cleaning removed a lot of the rest.
The point here is to be careful with the old stuff.
On to making a list of what to order!
Next part of this series: Coming soon.
Previous part of this series: https://wereboar.com … t-should-we-replace/