I'm not sure about that. I would use an inverter board that was made for it. The cheapest one I could find and buy was an LS520 inverter board. I haven't tested it because I'm still working on the power supply, but I've found that it's easier than finding the connectors for the DG21's CCFLs. (I'm assuming those have become obsolete.)
Thanks. I'm not sure what point you got up to, but did you manage to design a bracket for that inverter that fits in the current existing mount?