I have a pair of Dual 1.25 MHz MDD G4's which have been my graphics workhorses since I bought them new. Recently the power supplies failed on them both within a few days of each other. I removed the power supplies and was surprised to find that the power supply in the first computer I bought is an AcBel 400 Watt Rev B and the power supply in the second one I bought a few months later is an AcBel 360 Watt Rev A.

Does anyone know why Apple used two different power supplies in two virtually identical G4's? Or which one is the better power supply? Did they have problems with the 360 W and replace it with the equally undependable 400 W?

These AcBel power supplies were made in China. Doing a little reading I quickly discovered that Apple had problems with them immediately.

There is an online service, National Ram Electronics, that repairs the AcBel G4 power supplies. Does anyone know if these bits of Chinese junk are worth repairing?

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