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**eccerr0r** · 10-31-2021, 10:26 PM

photo of the tracks on the back side of the board? does not seem right that two apparently "GND" ports are not grounded/tied together - unless the company was playing tricks with virtual grounds and using the same BOM device for both rails... Or the silkscreen is wrong and the chips on the heatsink are different, still don't know what they are...

10-31-2021, 10:26 PM	#12
eccerr0r Solder Sloth Join Date: Nov 2012 City & State: CO My Country: USA Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 7,164	Re: Motor control board photo of the tracks on the back side of the board? does not seem right that two apparently "GND" ports are not grounded/tied together - unless the company was playing tricks with virtual grounds and using the same BOM device for both rails... Or the silkscreen is wrong and the chips on the heatsink are different, still don't know what they are...