LED Backlight Upgrade: Scale Modification Guide

In our previous article Small Electronic Scale: Disassembly to Calibration, we explored the disassembly process of electronic scales. However, in this article, we delve deeper into the intricate details of the backlight panel.

Upon closer inspection, we discovered that the backlight panel, initially presumed to be integrated, is, in fact, separable. Through careful manipulation, we successfully dismantled the panel, revealing the LED light board, encased in a striking blue gel.

This LED light board, situated beneath the LCD screen, plays a crucial role in illuminating the display. 

Marked with 'A' for positive and 'K' for negative, the backside of the board offers valuable insights into its configuration.

Despite its diminutive size, measuring just over 1mm in width, the LED light board presents opportunities for customization. 

By following our detailed instructions, you can create your own PCB ruler, facilitating future endeavors in electronic tinkering.

Furthermore, we explore the process of upgrading the LED backlight, transforming it from its original state to a vibrant display of orange hues. 

Utilizing an 0805 LED, we replace the existing components, ensuring a seamless transition.

Once reassembled, the electronic scale springs to life with an enhanced backlight, exuding warmth and clarity. 

To validate the success of our modifications, we conduct a simple test, weighing a coin and observing the display's newfound brilliance.

For those seeking to replicate our endeavors or embark on similar projects, we provide detailed visuals of the LED within the backlight panel of the Elico EM33D multimeter. These images serve as a valuable reference point for future modifications.