Instruct: Classify the given Amazon review as either positive or negative.
Query: display malfunction

After about 1 month the display numbers were unreadable due to portions of the digits being burnt out, like when a light bulb goes out. Once that happened, the unit became unusable to me. Also, even after the burn-outs, the display was way too bright to be on my nightstand. I went to a window tinting place and they gave me a scrap piece of dark tint which I put over the display and that made it just about right-easily readable, but not too bright.