Powersupply 5V 2A polarity

[heinz57g]

need to replace a lost powersupply for a WL500g with a OEM one, of which i have plenty around, but am
not sure if it is PLUS in the middle and MINUS on the outside of the plug, or the other way around.

could one of you kindly check? it is usually written with a symbol on the original power supply.

greetings, and tks in advance - heinz -

[Fred]

I have take a look at my power supply of the WL500g. The plus is in the middle!

[heinz57g]

tks fred for the quick reply and checking.
95% are like this, but it is the 5% that burn up you things!

greetings - heinz -

[jimmy_cr]

heinz - what about to have look inside WL-500g, there should be some "safety" diode. So by its polarity you should be able do decide where the "+" is ;)

edit: and if not, there should be some capacitor with polarity marked on it ;)