Blurry Signal

RobPhill33 · 19th March 2003, 10:30 PM

I just hooked up a new amp to my scope and one of the channels is blurry. Instead of a sharp sine wave (like to other channel) it is a wide blurry one. When I touch the back of a certian transistor the signal becomes sharp. Hmmmmm?? Before I start unsoldering components I thought I would ask if this is a common symptom of something (besides a crapy amp).

SY · 19th March 2003, 10:52 PM

What you got there is possibly hum, probably HF oscillation.

19th March 2003, 10:30 PM	#1
RobPhill33 diyAudio Member Join Date: Sep 2002 Location: Milton Ontario	Blurry Signal I just hooked up a new amp to my scope and one of the channels is blurry. Instead of a sharp sine wave (like to other channel) it is a wide blurry one. When I touch the back of a certian transistor the signal becomes sharp. Hmmmmm?? Before I start unsoldering components I thought I would ask if this is a common symptom of something (besides a crapy amp).

19th March 2003, 10:52 PM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX	What you got there is possibly hum, probably HF oscillation. __________________ "It is not seemly, after wiping your nose, to spread out your handkerchief and peer into it as if pearls and rubies might have fallen out of your head." - Erasmus

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