Led driver Hantek DSO5202P

anton0456 · Post time 2017-8-3 12:24:40

Edited by anton0456 at 2017-8-3 15:12

The display has 15 LEDs. Five lines of 3 serial connected LEDs. Each LED consumes 30mA. Total result is 150mA. The maximum voltage that leddriver gives is -10.8V. To get a current of 150mA, we need to apply Ohm's law, which says: R = U / I. We substitute our values into the formula and get R = 10.8 / 0.15 = 72 Ohm. Disconnect the LEDs from the board and replace them with a 72 Ohm resistor. Measure the voltage across the resistor. Up to 9V, the voltage behaves normally, after 9V it starts to jump. Conclusion. It broke not only the light in the display, but the LedDriver installed on the "LCD Adapter" board. It's easy.

I just need to know what is LEDDRiver chip installed on "LCD ADAPTER" board. Or where I can buy this board. That's all.

amy · Post time 2017-8-10 09:45:24

Sir, please press "Utility->System information" and give us the sw version to study.

amy · Post time 2017-8-10 11:30:48

Edited by amy at 2017-8-10 11:32

Sir, please use the two firmwares to update.

Can one of them improve the screen flash problems?
Please tell me the result.

anton0456 · Post time 2017-8-10 12:08:46

Edited by anton0456 at 2017-8-10 12:35

Firmware doesn't slove the problem.

amy · Post time 2017-8-11 10:00:43

Sir, please send a message to me caiyijun@hantek.com

Led driver Hantek DSO5202P

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