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Hi, well, there is "some" success. I have replaced motherboard with 715/50, effectively turning dead 715/75 into a working 715/50. Root cause of the problem was probably failure of PSU fans, which are essential in cooling CPU module, which gets really hot in this machine. I had to replace both...

Hello all, recently I have acquired HP 715/75, and I’m trying to verify it's condition: - I have checked PSU and all voltages seem to be correct: +5,-5,+12,-12 - I have disconnected EISA graphics card and all SCSI devices. Basically it’s only PSU, mainboard, CPU module, and SIMM’s - Battery was...