I purchased a 24vdc 15a switching power supply from a vendor on ebay, after it arrived I wired it up and checked the voltage from v+/v- and it only reads 12v. I checked to make sure the 110/220 switch was set right (it was set to 115 ?) and verified the wall voltage (122v), so as far as I can tell everything is set right but I get half the voltage advertised.
There is no manufactured or model number on the supply, the only hint this is the right supply comes from a tiny label on the box that reads #9275844#A15*1*3*24V15A, there is also a bar code 986250142 which google finds it here DC 24V 15A Switching Power Supply Transformer Regulated which is actually the company I purchased it from.
The company refunded my money and told me *not* to return the item, so I opened it up to take a look. Nothing seems out of place, but there are no model numbers or identifying marks on the inside either. My guess is that these are made in a factory that also makes 12v supplies and they stuck the wrong one in the box, is there anything in particular I could look for to test this theory?
Any hints would be appreciated.