Mk198 led buddy

Hi guys,

Is it possible the LCD display is damaged somehow?, I only get 8 “block” like shapes on the display. When I connect a LED to the testing pads the LED lights up but no further information or anything on the display.
Thanks in advance and happy holidays.

Hello Lorentz,

Check the all the polarized components in steps: 2,4 &10, and also the soldering points.
blister manual mk198.indd (

Please also post a picture of the component side and soldering side of PCB.

If this not help, You can bring it back to your local shop for RMA request.
Best Regards,
Velleman Support

Thanks for your support, poor soldering on the pin connector was the cause indeed…


Nice to hear it’s working now.

Best regards,
Velleman Support