A 22" panel will be extremely expensive. Extremely. As in, very expensive. As in, it will cost a lot.

You may be lucky, though, and discover that your display suffers from the common "dead inverter" problem that afflicts many cinema displays. Replacement inverters are available at reasonable cost, so if you're comfortable with disassembling things, that's the way to go.

And if you're very comfortable with component-level repairs, you may succeed in fixing the inverter. The power transistors are a weak spot, as is the transformer. Replacement transistors are readily available for a few dollars. Don't know about the transformer, however.