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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.
Hi Neil! Take it easy! Take it easy! I don't want anyone try to guess its circuit. I just tell a truth. I just ask for some advice to dispose this kind of problem. Haven't you encountered them? You know, as a beginner, I can learn a lot from you. Thanks again!:)
You need to give more information and post to a newsgroup like comp.arch.embedded not here. Good luck.
Thank you for your advice. Have a nice day! :)
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.