What do you call the dots that glow inside LED lights? A very small yellow square ~~~ my light that thing is broken...... Want to fix it yourself?

The yellow box should be the LED chip, the light source inside the lamp is composed of a number of LED chips, can be parallel, series or multiple groups of series parallel depending on the circuit design is different; LED chip has different shape light power is not the same, know the damage is that one can be replaced with the same shape, and some lamps have driving power, if the power is damaged, the lamp does not work.