From your pictures, it would appear that you have a earlier version of the G68 with a UMEC switch mode power supply. The G61 pictured has the XP switch mode power supply that is the current one available as replacement. If you can source a power supply housing like the one in the G61, you could then mount a replacement XP power supply. In doing so, you would have to rearrange the order of the wires in the output connector to match the order pictured in the G61. As the UMEC power supply shows the age of the G61, I would suggest that you get it serviced by a person who is familiar with and has the required equipment to replace the capacitors on the back plane and boards that can cause power supply failures. The fact that the G68 still has the UMEC power supply installed I would suggest this be done sooner rather than later and resist the urge to adjust the voltage pot and keep going. Doing the latter could result in an expensive door stop.

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