Power control unit - doesn't power up

Hello everyone, Our DMA Q800 doesn't power up after a power outage. It seems the power control unit is broken (the -15V, +15V, +5V not lighting on, fan doesn't work ). The replacement is very expensive. Our lab has other old instrument from TA Q series (TGA, DSC). It looks like they have the same backplane/power control unit. I was wondering are they interchangeable? May I take a power unit from another Q series machine, and just put on our DMA?

Equipment: TA Instruments - Q800 DMA