Circuit board was shorted, but easy fix with small Phillips screw driver and razor knife. Works perfectly now. Symptom was batteries were getting hot and light would not come on .
Will write a second review on the replacement when it's received. Weird, though. I was unable to process the replacement request through the seller. I received a message saying I had to go through paypal as that was how I made the payment. That's not the case, though. The credit card on my paypal account has been expired for six years...I've never updated it. Since I don't see how I can go through paypal as I didn't/couldn't have made the payment through them, I'm just ordering a new one rather than a replacement for the defective one. Odd.
Update: as inexpensive as it is, I just ordered a second one without getting a refund. The second light works perfectly. I read soft-cover novels constantly...every night...but, don't want to keep my partner awake. This light is far better than most I've had. It provides a ton of light on both settings and it works great for me with soft-cover books. I have zero issues with its weight and find no clumsiness with using it. For me, it's 100% perfect.