Digging this up from the graveyard.
New power supply circuit boards are available for IPS and Ingot (but not the small rectangular-box) power supplies.
The new units have a larger transformer than the Ingot, and more storage capacitance than the Ingot. This is an upgrade for both the IPS and the Ingot. Remove cover. Disconnect the power cord, disconnect the output cord. Remove old circuit board. Install new board, re-connect power cord per instructions. Install original--or upgraded (extra-cost)--output cable per instructions. Test unit with voltmeter. Install cover. Enjoy.
I purchased this upgrade from rkchambers@gmail.com about a month ago.
Supplies will be limited.