PSU issue

[NecroFlex]

Ok so i initially thought this was an issue with Haswell, but it's not, i got a PSU that works on a P4 mobo but anything above that it doesn't want to power it on. 478 it has no issue, 775 or above it doesn't wanna work. Does anyone have a clue as to why, on the 1155 board the small LED was glowing a bit green, but nothing happened, when i plugged in another PSU the light was brighter, if that helps.

 

Any ideas help

[CAPCOM UK]

Need to know a lot more about the PSU.

Make and model? 12 volt amperage ratings?

[The_Denks]

4 minutes ago, NecroFlex said:

Ok so i initially thought this was an issue with Haswell, but it's not, i got a PSU that works on a P4 mobo but anything above that it doesn't want to power it on. 478 it has no issue, 775 or above it doesn't wanna work. Does anyone have a clue as to why, on the 1155 board the small LED was glowing a bit green, but nothing happened, when i plugged in another PSU the light was brighter, if that helps.

 

Any ideas help

Probably the PSU itself is dying

[Electronics Wizardy]

What PSU?

 

Its probably a cheap one that doesn't like the extra power draw.

[NecroFlex]

2 minutes ago, CAPCOM UK said:

Need to know a lot more about the PSU.

Make and model? 12 volt amperage ratings?

 

2 minutes ago, Electronics Wizardy said:

What PSU?

 

Its probably a cheap one that doesn't like the extra power draw.

Yes it's a cheap one, i got it with a P4 system, didn't expect much from it since it LC Power, but i hoped atleast that it would be enough for the 775 system.

[CAPCOM UK]

It is perhaps quite decent for an old supply but you should definitely replace it, it's innards are not designed for long life.

[NecroFlex]

32 minutes ago, CAPCOM UK said:

It is perhaps quite decent for an old supply but you should definitely replace it, it's innards are not designed for long life.

Nvm, i tested something and it's strange. If i flip the back switch and try to power on it doesn't, but if i flip the back switch and wait a bit, it'll then power on when i press the power button, might be the capacitors at fault?

[CAPCOM UK]

Just now, NecroFlex said:

Nvm, i tested something and it's strange. If i flip the back switch and try to power on it doesn't, but if i flip the back switch and wait a bit, it'll then power on when i press the power button, might be the capacitors at fault?

Yeah caps sound close to blowing or are just failing to hold current.

 

Replace it ASAP.