Most of my garden lamps I did not buy. I found them in the trash during my one-euro-job times. Apparently people threw them out as soon as they did not work. But these lamps are very easy to fix. Most important and most fragile element of this lamp is a battery, usually NiMh, size AA or AAA. In low temperatures and with little winter light this battery simply might lose functionality. Battery is easy to replace which might completely renew the lamp. However it is possible to use an old trick to revive the battery. I am sure you have an AA or AAA charger for your camera batteries. Use it to fully charge the garden lamp battery, then insert it back and cover the solar elements to see if it worked. If not, try another battery or check the wires. Please, do not throw out these lamps, because the batteries they contain (and plastic details) are degrading the environment.