A non dell power supply would connect to the motherboard but will not fit in the case.

The power connections arent proprietary the case is.

 

Thanks for your help.

I wasn't planning to fit the ATX psu in the box, just disconnect the Dell psu from the motherboard etc, leave the ATX outside the box with the box open, and feed the ATX output leads into the box to the motherboard/hard drive, etc. This was only going to be temporary to test if the pc problem was caused by the Dell psu. Either the Dell psu would prove to be okay, or I would have to get a repacement Dell psu.

I had heard a rumour that while DeIl used the same 20-pin connector type as an ATX psu, the arrangement of which pins had which voltages was different was, so that the ATX would put voltages in the wrong places for the motherboard.

Also I thought that possibly others had had this reboot problem, and new the solution

Regards

The proprietary power supply connections were on the  9228C 200Wpower supply and the Optiplex models listed below.

 

Notes: POWER SUPPLY 200W STANDARD 3V 20+6 1 .2A NPS-200PB-73

9228C, 09228C Compatible with Dell Computers:

Dimension 4100, Dimension 4100, DT, Dimension 4100, MT, Dimension LXXXc MMT, Dimension V___, Dimension V___C, Dimension VXXX MDT, Dimension VXXX MT, Dimension XPS BXXXR MDT, Dimension XPS BXXXR MT, Dimension XPS R, Dimension XPS TXXX MDT, Dimension XPS TXXX MT, Optiplex E1 MT, OptiPlex G1, Optiplex G1(+) M, Optiplex G1(+) MT, Optiplex Gn M, Optiplex Gn MT, OptiPlex GX1, OptiPlex GX1 Large Tower, OptiPlex GX1 Low Profile Desktop, Optiplex GX1 M, OptiPlex GX1 Mid-Size Desktop, OptiPlex GX1 Ultra Small FF (Net PC), OptiPlex GX1 Ultra Small Form Factor, OptiPlex GX100, Optiplex GX100 MT, OptiPlex GX110, Optiplex GX110 M, Optiplex GX110 MT, OptiPlex GX110 (R2), OptiPlex GX110 (Socket processsor), OptiPlex GX115, OptiPlex GX1P, Optiplex GX1p M, Optiplex GX1p MT, OptiPlex GX200, Optiplex GX200 M, Optiplex GXA EM M, Optiplex GXA EM MT, Optiplex GXA M, Optiplex GXA MT

 

 

 

 

Thanks very much. I shall try using my ATX psu tomorrow evening.

Regards

I have tried two ATX psus but the pc still keeps continuously cycling through Reboot. Therefore, I need to look for a fault elsewhere.

There are a couple of 2200uF electrolytic capacitors that look like they may be the very early stage of bulging at the end, There isn't any sign of leaks, but the ends do feel a bit domed (domed not doomed - not yet).

Thanks for your help

Problem solved. I changed all 5-off 2200uF electrolytic capacitors on the motherboard, and now the pc boots up normally.

 

Thanks for your help