7:49:11 pm on 5/17/12

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« QRSS Receiver Works… Barely
Insulated MEPT = Stable Signal »


Failing O-Scope! Bah!
220 words | Posted on June 11th, 2010
Scott was 24.71 years old when he wrote this!
Filed under: General

As if I didn’t ALREADY have enough against me, my oscilloscope decided to die on my RIGHT as I finally was able to view my 10MHz waveform. (I used a piece of coax with a load at the connector to the o-scope, and ran the coax to my test points.) It was beautiful! … and lasted about 30 seconds. The culprit seems to be a failing “focus” knob. My images had been getting blurrier by the day, and now it’s completely black unless I twist pretty hard on the focus knob. I’d stick a small POT in there, but I have no idea how much voltage/current is being regulated. I’m sure the schematics are posted somewhere, but for now I’m going to try to clean out the potentiometer manually and see if the situation improves. Here are some photos of the circuitry inside this old scope – too bad they don’t make stuff like this anymore!panelfrontron





This entry was posted on Friday, June 11th, 2010 at 5:12 pmand is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.



2 Responses to “Failing O-Scope! Bah!”

Ryan King wrote the following at 08:48:51 PM on October 14th, 2010

Did you try BAMA, the Boat Anchor Manuals Archive? http://bama.edebris.com/manuals/
Your scope looks Tektronix-ish to me, and they have good Tek coverage there.

Steve wrote the following at 09:17:41 PM on December 29th, 2010

THANK GOD they don’t make stuff like this anymore! The Chinese prison laborers would go broke!

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