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Where I can find its circuit diagram?

xinting wang

Hi Everyone!

Here is a specific instrument amplifier.
It covers a AD620 and a OP07. But it
doesn't work now. It is a pity, I
haven't its circuit diagram. Who can
give some advices and detailed steps
to repair it?
I am a student. Thanks a lot.

Parents
  • 0 in reply to xinting wang

    Here's a tip:

    if you can get the PCB out of the unit, put it on the glass of your scanner and scan it;
    then turn it over, and scan the other side.

    Now you have images of both sides of the PCB, which will make it much easier to trace the interconnections and thus deduce the circuit diagram.

    Even without a scanner, you might achieve ueful results on a phoocopier.

Reply
  • 0 in reply to xinting wang

    Here's a tip:

    if you can get the PCB out of the unit, put it on the glass of your scanner and scan it;
    then turn it over, and scan the other side.

    Now you have images of both sides of the PCB, which will make it much easier to trace the interconnections and thus deduce the circuit diagram.

    Even without a scanner, you might achieve ueful results on a phoocopier.

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