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PCB to scheme.

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deandadnaed:
Hi!

I’m trying to understand and simulate a Power Supply. Wiring is very clear for me. But the PCB’s aren’t.

Is there a way to reverse engineer a PCB and obtain its diagram/scheme?

The first piece I want to describe is this:




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viperidae:
Take a picture of the track side, print it out then draw the components on it.

From there it's much easier to start drawing out the schematic

deandadnaed:

--- Quote from: viperidae on April 06, 2019, 10:07:11 pm ---Take a picture of the track side, print it out then draw the components on it.

From there it's much easier to start drawing out the schematic

--- End quote ---
Thank you very much!


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alex.martinez:

--- Quote from: deandadnaed on April 06, 2019, 09:55:05 pm ---Hi!

I’m trying to understand and simulate a Power Supply. Wiring is very clear for me. But the PCB’s aren’t.

Is there a way to reverse engineer a PCB and obtain its diagram/scheme?

The first piece I want to describe is this:

Enviado desde mi iPhone utilizando Tapatalk

--- End quote ---

At least it is a one-sided board. The problem with power supplies and several-model electronics is that they make a master PCB with all the features, then fabricate that one, and for lower-tier models they remove some of the sub-systems.

The advice above is pretty solid, but take into account not all component hoels are populated... and probably there is a good portion of traces shorted to ground. I would start from there, use te continuity meter and start checking which ones are shorted, where do the "0 ohm" go and so on.

jerryk:
Here are some different views of your board that might be helpful.

Jerry

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