I had to see for myself what mine does. Nope, Going from CH1 to CH3 no blip on the CH2 LED. However, I see a flicker on CH1 when switching from CH2 to CH3. Nothing to worry about. The blink is simply the logic changing state while the relays are switching. The amp is not actually changing to CH2, so the flicker is just an artifact of the logic circuits an nothing more.