Ting Shen Christmas Lights

I need to fix some Christmas lights and it says Ting Shen TS23? 3

I also have a very similar channel which says TS22. The first lamp looks different from the others. Like the main bulb but I can't replace it and WLE string doesn't work without it. Thoughts?

update

Thank you for your reply. I tried to put a different lamp in it, but the holder of the first lamp is different in size from the others. Must have an alternative lamp, but I can't find it?

The first lamp can be blinking, if you don't mind blinking, try moving the last lamp to the first position.

I need spare parts for my Christmas tree. cl2 power supply ts13w29v