Advice Re: Sourcing Driver for COB LED

[BangDroid]

Hi everyone I am just wanting some advice for a driver for a 10W LED I have. I don't have any specs for the LED unfortunately other than 10W and the listing stated 12V, but I don't know what they means as a driver is constant current so the voltage will vary, I believe. It appears to have 9 chips inside if that's helpful in defining characteristics.

I previously had a driver for this LED but it started to slowly blink like many chinesiums do, it's even potted in epoxy so I couldn't even dig it out to replace a cap.
I bought a replacement LED driver after 2 attempts of sales being cancelled, it's been months of me trying to replace this LED driver. The previous one worked well for about 1 year before the blinking started.
The new driver is extremely dim, it's barely useful, whereas the old driver would make the LED shine very bright and it needed a small heat sink.

Attached images show the drivers, top is the old one that blinks, new one that's too dim is bottom. And the 10W LED (the illumination here is not from the driver, but a battery to show the LED chips inside)

Would something like this be suitable (https://www.aliexpress.com/item/1005003660953855.html) the 8-12W variant?

[MarkT]

That's likely a 3x3 array of 1W dies, so about 10V and 1A, standard white 1W dies are about 3.2V 300mA, so perhaps use 12V supply and 2W 2.2ohm series resistor?

Your old unit seems to be a 12V constant voltage supply without a series resistor - no wonder it cooked and failed, it would have been over-stressed due to high current.  It probably cooked the LED dies too...

The new unit is a 300mA constant-current supply - but your LED requires 1A or so, so its dim.

So either 12V plus series resistor or 1A constant-current supply, not either of the one's you have...