Troubleshooting circuits using the oscillopscope

Discussion in 'General Electronics Chat' started by tracy747, Sep 1, 2013.

  1. tracy747

    Thread Starter New Member

    Sep 1, 2013
    The oscillopscope is your best friend when in troubleshooting circuits however using the oscope with a signal generator requires knowing what to look for and where.

    When you need to take readings and trace signals or look for ps rail opens, shorts, check transformers, look at caps in ps, check pins voltages on tubes guitar amplifiers with high voltages as much as 600- 650vdc etc.

    Where can i find detailed instructions using a digital oscope for probing stage by stage in a tube circuit to find "the bad passive or active component"??
  2. bance


    Aug 11, 2012
    Try the manual that came with your scope, if you don't have one, you could try this
  3. #12


    Nov 30, 2010
    A most important thing is to know what you expect to see before you measure. This means knowing the circuit you are trying to fix AND knowing your 'scope. You are on the right track. Specific questions can be directed at a website called There are many helpful people on the site.:)
  4. MrChips


    Oct 2, 2009
    Agreed, an oscilloscope is an indispensable tool for trouble shooting but don't get hung up on it. An oscilloscope is just another tool such as a digital multimeter or a function generator.

    What is more important is having a systematic approach to trouble shooting.

    Firstly, you need to have a sound understanding of the circuit you are about to trouble shoot. Every situation is different. However the general approach may follow a common pattern.

    Give us a real example and we can show you the steps to follow.