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A Winner has been chosen for the 2026 July 4th Retevis RA89R Giveaway! Click Here to see who won!
replacement part help
- Thread starter 1iwilly
- Start date
It's not a transistor, it's a SCR, or silicon controlled rectifier. Turns on like a transistor, but stays turned on after the input is removed. Only turns off when you remove the power. In the Cobra 2000 it's wired in parallel with the power button. Pushing the power button to "On" shorts across the SCR effectively shutting it off.
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