How To Identify Which Connector Is Positive And Which Is Negative Vizio Television

Chosen Solution

Hi everyone, I’m having an issue with D55un-e1 LED tv. LED driver/power supply is not working after using a multimeter. I wanted to check if it’s the backlights so I got an LED tester. However, the connector points do NOT indicate which connectors are positive and which are negative. (Power supply board : PLTVHU401XABV). Here is the picture of the connectors

Could anyone please help me with where to stick my negative and the positive in this situation? Thank you so much!

@johnny_k Look on the board where the LED power cable plugs into. the VLED leads are the +ve leads and the -VLED are the -ve leads The pin count is shown on the board i.e. 1 down the bottom or on the right when looking at the image you posted and 12 at the top or the left. So place tester between pins 12 (+ve) and pin 10 (-ve) ON THE PLUG, (which is disconnected from the socket) Then between pin 11(+ve) and 9 (-ve), then presumably between pin 2 (+ve) and pin 8 (-ve) and then pin 1 (+ve) and pin 7 (-ve)