MV-ELA
External board provided with original MVS cabs to handle high-voltage generation and switching for the cab marquee MV-ELB board(s).
Uses a 5 pin transformer and a C2516 transistor to form a self-oscillating circuit.
Uses six 800mA 400V AC0V8 triacs (datasheet) for switching.
Often produces a high-pitched noise when some panels are lit, this is normal and common with switching PSUs. If the noise is too annoying, replacing the transformer or potting it in resin will help.
Software control is done through REG_LEDDATA, and REG_LEDLATCHES bit 3.
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