Kingpan Charger voltage too low - Green light all the time

[Milicia]

My Kingpan 48V 5A charger just bit the dust. Well sort of... I got it with my 48v 15Ah ping battery. The problem is that the output voltage will not go above 54.2V. The green light is always on. Even when I plug it into my battery that needs a charge. I talked with Mr. Ping over email and he said that the output voltage is supposed to be at 59.5V. We tried raising the voltage with that potentiometer (blue box with the screw in the top) next to the fuse holder.

All I am able to do is lower the output voltage with it.
I did find a resistor that has been discolored due to too much heat but that might be a symptom of another problem. Kingpan apparently won't give up their schematic either Anyone have any ideas?

 

[dnmun]

how are you measuring the voltage? can you verify the voltmeter works and is accurate?

your second picture is so close there is no way to know where it is located in the circuit except there is the choke to one side so it must be in the back end.

 

[Milicia]

Yes, the volt meter is accurate. Its not one of those cheap harbor freight kind. Plus, the charger's green light is constantly on. Its like the scale in which the the thing knows to stop charging has been lowered.
I have two alligator clip wires with insulating jackets on each pin of the XLR. They are just the positive and negative terminals of the output.
Here is a better picture of where the resistor is. Its close to the transformer on the DC side of the power supply.

 

[dnmun]

what is the color of the last band. orange black black and is the last one brown? i would say that it is the snubber across the schottky diode because i am guessing that the TO-220 part next to it is the schottky diode but it may be the voltage regulator but the picture is too close up to see anything around it.

you should try turning the trimpot in the other direction because you may have run it off the end of the screw and it is no longer able to move the wiper because the screw has disconnected from the wiper. it may have run off the end on the low voltage side of the trim.

if the output voltage does not change when you turn it the other way then that is what i would say has happened.