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PCB with shorted VCC and GND

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Roby_Tas 4 years ago

Hi Everyone, I would ask a very simple thing, maybe obvious for you, but I'm getting crazy with it. I have searched on your forum without results. Despite In my schematic there are many net flag Vcc and GND without any short each other, as soon as I convert my schematic into PCB they appears shorted ! How is it possible ? Look at C7 zoomed in the picture. Thank you very much for you support. Roberto ![schematic1.png](//image.easyeda.com/pullimage/fMzpfUjuD6uNjtJ5s8C1AH7VVo0bU20XXMkETiY4.png)![pbc1.png](//image.easyeda.com/pullimage/upo6gvHIiYlTQDUdr3OLNJZ6Qpp8wd5mpYjnvf7z.png)

Chrome 83.0.4103.116 Linux EasyEDA 6.3.53

Comments

andyfierman 4 years ago

Please make your project public so we can see it in detail.

Chrome 80.0.3987.163 Ubuntu EasyEDA 6.3.53

andyfierman 4 years ago

Sorry but your screenshots do not give enough information. Obviously somewhere you have connected VCC and GND together in the schematic. You may be able to spot where by going through the nets carefully in the Schematic Design Manager but without being able to see the whole schematic, it is impossible to see exactly what and where.the error is. Make sure youhave not put a GND netflag on the VCC net or a VCC netglag on the GND net.

Chrome 80.0.3987.163 Ubuntu EasyEDA 6.3.53

Roby_Tas 4 years ago

hi, this is the project, now is set as public, you can see the schematic, if you go in design manager --> nets, a warning appears, clicking on it, then the wires involved are highlighted, it does not seem any short present inisde ! [https://easyeda\.com/editor\#id=\|9f4b9349ee56455496446ebaab501e55\|da6798dd94be42f08be734b4ee24ef4e](https://easyeda.com/editor#id=|9f4b9349ee56455496446ebaab501e55|da6798dd94be42f08be734b4ee24ef4e)

Chrome 83.0.4103.116 Linux EasyEDA 6.3.53

andyfierman 4 years ago

@Roby_Tas, Click anywhere on the GND or VCC net to select a segment and then press H: ![image.png](//image.easyeda.com/pullimage/WDXVf056NhxdlkLA7Lzq9lqeTY0kFq8dpJh1HxFe.png) At least one instance of a device in a multi-device package has its power pins reversed: ![image.png](//image.easyeda.com/pullimage/TSwc8DPsTKTw3yTCixj3PZhYiWJb3OlE94gcleZC.png) The Design Manager shows that you have two or more different labels on the same net: ![image.png](//image.easyeda.com/pullimage/7kGr7SoTM5bGCtw52J5J5swUAUrisPkehRbjc7Jb.png)

Chrome 80.0.3987.163 Ubuntu EasyEDA 6.3.53

Roby_Tas 4 years ago

thank you very much ! I did not realized that U3.3 was inverted, not I've fixed the power supply, thank you again. Roberto

Chrome 83.0.4103.116 Linux EasyEDA 6.3.53

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