Sir I must thank you as my old 465B also has a noisy pot and the trace would jitter and disappear, come back and go. Without your video I probably would have to retire my old girl. Once more thanks for the great video!!!
Good stuff, Bob. I once had a problem with my 465B that the sweep amplitude wasn't large enough to fill the screen. Turned out to be a drifted resistor value in the power supply (+15V I think) to the sweep generator circuit, limiting the headroom for the sweep to complete.
You may have just pointed me to the issue in my 465! Everything seems to function but I only have about 1/2" of horizontal deflection. Thank you very much!!!
What's goin' on Bob. Ol' Mahesh Kesanakurthi below has something to peddle. Anyhow great video an I don't have either scope the debug process was crystal clear and easy to follow. Those PCBs were immaculately clean tho! They looked brand spanking new.
Sir I must thank you as my old 465B also has a noisy pot and the trace would jitter and disappear, come back and go. Without your video I probably would have to retire my old girl. Once more thanks for the great video!!!
Good stuff, Bob. I once had a problem with my 465B that the sweep amplitude wasn't large enough to fill the screen. Turned out to be a drifted resistor value in the power supply (+15V I think) to the sweep generator circuit, limiting the headroom for the sweep to complete.
465 is one of the best Tektronix in the 40 years ago..I loved him😍
thank's for these precious informations, i have bought a 465b scope this week and i will try to repair it!
Thanks. I have a 468....
You have great troubleshooting skills...
Good job
You may have just pointed me to the issue in my 465! Everything seems to function but I only have about 1/2" of horizontal deflection. Thank you very much!!!
Very good video. Thank you!
I must admit I would never have given those resistors a second look!
Thank you! My 465B also jitters around horizontally. Still have to figure out what's going on.
What's goin' on Bob. Ol' Mahesh Kesanakurthi below has something to peddle. Anyhow great video an I don't have either scope the debug process was crystal clear and easy to follow. Those PCBs were immaculately clean tho! They looked brand spanking new.
I could not find the germanium diodes CR471 and CR374 mentioned towards the end of the video. Can anyone help me out>
Can't assume anything is fine