BTH240 won’t turn on

I got my BTH240 about 4 or 5 months ago. It has no damage and no water damage, item was use hour a day for the gym. Now it won’t turn on. I tried leaving it on charge over night, the red light use to turn off before but now it stays on as long as it’s plugged in. It won’t turn on no matter how long it’s charged for. Box says I have 2 year warranty. How may I get a replacement?