D_block Posted July 2, 2008 Share Posted July 2, 2008 Now this unit came to me after the owner had his share of interference with it . The problem basically is no beeps, when the 4 pin P4 connector is plugged in to the motherboard the processor fan does not come on , when i tested the voltage through the molex connector i various entries of Zero (0.06) When i disconnected the P4 and left the 20 pin P1 connecor in, it powered up the fan spins and everything . the reading on the molex is as it should be 12v ,3.3v respectively .So what suggestions are there to check next ???the guy said once he saw smoke ascending from the mobo but the unit was still working then . So what do you think i can further do or check ?? Link to comment Share on other sites More sharing options...
mezron Posted July 2, 2008 Share Posted July 2, 2008 Power supply possibly. If you put in a standard atx power supply you need to disconnect one of the wires for that model Dimension, it's important you know that. I don't remember which wire, but Dell has the wiring diagram on their site for it somewhere. Link to comment Share on other sites More sharing options...
D_block Posted July 2, 2008 Author Share Posted July 2, 2008 i worked on about three (3) Dell Dimensions all about power supply and i never got this problem although there was slight difference within the units build . The only difference between a standard Dell PSU and a regular ATX PSU is a white wire connected to the 20 pin P! connector , but i never got a problem with it so far Link to comment Share on other sites More sharing options...
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