Faulty Electronic Transformers & LED Drivers

[dolon]

In days gone by, when lights failed it was simply a matter of replacing the bulb.
With the increasing use of LED lights, it is not so simple.
Have an oyster LED ceiling light in bathroom that is not working.
Removed and checked the LED driver, but could not see any burnt components, or bad capacitors or loose connections.
What is the best way to identify the cause of failure. Could it be the LEDs which are in series?
It would be great to have lesson on fault finding on Electronic Transformers and LED lights.

[kam]

have you measured the voltage output of the driver? do you get any voltage at all?