Because there are two sides, I can compare one side's readings to the other, and have found that a transistor is outputting a lower voltage than the other one, resulting in one side being dimmer than the other, and when the indicator is put on for the dimmer side the red LED's go out, when they should stay on.
I've swapped them over and YES! the fault changes sides, so I'm sure that it's this component that's producing the problem.
It's a transistor, ("d" shaped in cross-section) marked:
UTC
HE8050L
D TEA
And it's got three legs.
My question is, where on earth can I get one?
Or, what should I ask for, because Maplins and RS don't give anything when searched for this info.
