It's a sad reality most Christmas lovers will face at some point in their lives: all holiday light bulbs will eventually fail, even high quality bulbs like those from Tru-Tone.
While our bulbs are rated to last 20,000 hours on average, it's entirely normal to have the occasional bulb die prematurely of that mark.
With traditional incandescent bulbs, that typically happens in one bright flash, never to light again. With modern LED bulbs, however, the period in which the bulb is failing can last much longer, and is usually accompanied by periods of illumination that appear much dimmer than other bulbs on the strand, or the occasional obvious flickering.
While you may perceive some amount of flicker with normal operation of our threaded bulbs (especially if you are extra sensitive to electronic/LED flickering), a bulb that is on its way out will flicker much more irregularly and out of sync with its fellow bulbs.
This is, on the whole is rare, but it does happen. If you have a bulb that dies prematurely, you can request a replacement and our team will be glad to assist from there. If the problem appears more "systemic" – that is, with the entire strand – it's likely a different issue and we encourage you to contact our support team for further assistance.