About 6 months ago I purchased 6 Encore DP-ESL3x3GU10A4 LED replacement bulbs GU10 dimmable and I was quite pleased with the product. The light was right as I expected for a warm white bulb, the three 3W LED were doing a good job to replace energy hungry halogen bulbs and the LED replacement bulb dim functions was linear and went quite far down to be called dimmable.
I was very satisfied with these GU10 LED bulbs to prepare a positive review but I put it on hold just to make sure they were keeping their specifications after a few months of usage. Unfortunately a month later, one LED bulbs started blinking without any sign of fatigue or failure. I removed the LED replacement bulb, let it cool down and re-installed it but it kept blinking. I replaced it by the spare one I kept on hand.
A few weeks later another GU10 LED replacement bulb refused to lit and got replaced by another brand of LED bulb. I contacted the seller who told me that the problem was coming from my installation – not the answer I was waiting on but she refused to replace the 2 faulty LED bulbs which very soon became 3 and 4 until I replaced the last one yesterday evening.
All 6 GU10 LED replacement bulbs I purchased died within 6 months, very far from the 30 years of service claimed by the Chinese manufacturer. I think there is a design flaw in the heat dispenser that makes the electronics of these LED bulbs quite long time before the LED itself.
As you know all my house is now on LED bulbs and I continue to try and evaluate several models and brands – the oldest one I have are E27 12W LED replacement bulbs that run since 4 years without any sign of problems or color change. Some like these Encore DP-ESL3x3GU10A4 GU10 LED replacement bulbs for 50W halogen bulbs are not design or manufactured correctly and should be avoided – see product below.