So, i just asked Simon [the official owner of Convoy @ convoy.aliexpress.com] and he answered me with the following images in This thread
So tonight i had to find out whether it was actually a PTC or NTC, to remove the item or make a solder connection between the pads.
To find out i measured the component Simon pointed out at room temperature which gave me around 90K, after warming up the driver with my wife’s blow dryer the resistance dropped to 35K.
So i desoldered the NTC and did a second second test on only the component (which gave different readings ofcourse, since measuring resistance in a loop is actually a no-go)
No load resistance gave me 105K and after heating up with the blow dryer gave me around 35K (it raised quite fast, that’s why the picture shows ~60K)
Now the light gets hot after a few minutes, which means, mission accomplished, now i have an L21A without temperature protection!
I LIKE IT !
Removed the NTC