Tektronix 2235 Sweep Generator (horizontal mode) A issue

[bushtech]

You Alfred Hitchcock by any chance?

 

[JRUBIN]

OOOPS!

I started a post and then forgot to copy in the rest. As I stated, I started working back from Section 6. Test point [30] is just before R740 In checking all 3 connections of this resistor I saw that the garbled signal was only seen on the side facing R741. Id visited this pot before two weeks ago, it cleared up after agitation, but came back. This time before attempting replacement, i hit it with deoxit and then worked it, no problems for several days since.

 

[JRUBIN]

I continue right where we left off with the first of 7 movies that contain the repair and calibration of this unit. A long awaited closure of this project going back to 2015

 

[JRUBIN]

Part 2 of 7 in the repair series

 

[JRUBIN]

Part 3 of 7

 

[JRUBIN]

Part 4 of 7

 

[JRUBIN]

Part 5 of 7

 

[JRUBIN]

Part 6 of 7

 

[JRUBIN]

Part 7 of 7