There is a strange looking gap in the PCB pattern adjacent to the lower left LED in that picture.
Also, if it happened all the LEDs failed to a short circuit due to an overload, then all would indeed read "continuity" as would the board in total. 
It shows 037 in each LED with beep sound. It doesn't show cathode and anode.
The LEDs are dead.
BTW you should not connect the PS without suitable load: it will blow the output electrolyte cap.
So they're all shorted.
Again, you don't test LEDs with beeps. It says virtually nothing, and in the best case it tells you if the LEDs are dead, but not if they still work. Especially not white ones as the forward voltage is generally above the threshold where a multimeter will make them glow.
Do you in fact have the intention to start listening to what people on here say, or are you going to be stubbornly limping behind 30 posts in your own threads?
I will replace LEDs then let you know.
I think only 1 LED need to be replaced check each LED with 3V and 500 Ohm resistor, you don't have to remove them from PCB.
https://www.instructables.com/Simple-Basic-LED-Circuit-How-to-Use-LEDs/
Post # 21, last two pictures suggest that you applied, 110/220 V to LCD board, since they are connected in series there is chance that only 1 is burn out.
yeah, but you know...they all 'beep' 
Hi,
Did you put them all in the correct way?
Tom... 
Don't connect to power supply, we are not sure is ok, you can burn LEDs very easy again, connect 9V battery to white and black wire, and make LED shine, they are connected in series, so if you put just one LED in reverse the circuit will not work.
You can check each diode using this circuit.
I placed in correct way I checked each through multi meter all are glowing in multi meter diode mode.
Do they glow on 9V battery ?
What is showing multimeter on red and black wire of power supply ?
Yes they glow in 9 volt battery.
12 LEDs in series glow from a 9V battery? I doubt something like that exists.
So your power supply is not good.
?
Power supply red and black 12 volt dc displayed on multimeter
Is that when you are attempting to power the LEDs or just open circuit?
Anyway as have already been pointed out to you, even at 12V you can not power 12 LEDs, because that is only 1V for each LED, and that is not enough to turn them on. So turning it on with 9V is just silly.
It seems you are getting confused about what is happening.
I didn't count the LEDs, I always used resistor and some voltage, never check how much voltage is needed to see any light, I was thinking 1.5V, to be sure I did some tests. This type of LED need 2V to see any light = 12x 2 =24V, for 12V you need to connect 6 LED in series x2 and connect them in parallel.
How to make 36 volt for 12 leds power supply?
You mean
How to make 36 volt from 12V leds power supply?
Why you need 36V ?