That looks like the driver has to be changed, JAYAR. There are 3 drivers in this unit and the lights that are out are both under the same driver. I had bit similar issue with the one I bought from DP and they sent me a replacement driver and said that yeah, this has been issue with this particular model. Luckily HS1 seems to have all good quality parts in and I was so impressed with it already that I had to order second one.
Luckily it is really easy to service and these guys have the best and most kind service on the planet.
I linked instructions on how to change the LED driver. Hope it works for you!