[SOLVED] PC power cuts off

[Jackr987]

Hello,

I've got a bit of an issue where the PC will shut off instantly. It can happen at random times throughout the week, but never really more than once a day. (Sometimes it will go weeks without shutting off). To turn the PC back on I need to give the power cable a little wiggle and it instantly powers back on. I've tested the stability with Prime95, intelburn test and done a memtest overnight, the PC seems stable under load and I've had no issues with the testing.

I also bought a PSU tester which seemed the indicate the PSU was fine, and I've made sure the power cable is tight in the PSU, however does this sound like I need to replace the power supply?

Corsair rm750W
R5 1600X @3.9GHz
MSI B350 Tomahawk
RTX 2060S
16GB 3200Mhz

 

[CountMike]

Hello,

I've got a bit of an issue where the PC will shut off instantly. It can happen at random times throughout the week, but never really more than once a day. (Sometimes it will go weeks without shutting off). To turn the PC back on I need to give the power cable a little wiggle and it instantly powers back on. I've tested the stability with Prime95, intelburn test and done a memtest overnight, the PC seems stable under load and I've had no issues with the testing.

I also bought a PSU tester which seemed the indicate the PSU was fine, and I've made sure the power cable is tight in the PSU, however does this sound like I need to replace the power supply?

Corsair rm750W
R5 1600X @3.9GHz
MSI B350 Tomahawk
RTX 2060S
16GB 3200Mhz

"I need to give the power cable a little wiggle"
Isn't it obvious that something is wrong with power cable or it's ends ? Did you try another one ?

 

[Jackr987]

"I need to give the power cable a little wiggle"
Isn't it obvious that something is wrong with power cable or it's ends ? Did you try another one ?

The thing is is that it's snug in there, and the PC does not get knocked or moved in any way. Any other cable that I try seems to work, however the shutdowns are so random that I can't determine if it's the cable or the PSU. I don't know if this is a typical sign of a failing PSU or is just a cable that needs replacing.

 

[Jackr987]

"I need to give the power cable a little wiggle"
Isn't it obvious that something is wrong with power cable or it's ends ? Did you try another one ?

Also If I wiggle the cable when the pc is on, it doesn't shut off as I would have thought it would if there was an issue with the connection.

 

[CountMike]

Also If I wiggle the cable when the pc is on, it doesn't shut off as I would have thought it would if there was an issue with the connection.

Could be a contact in the PSU itself or even the switch on it, I had a bad brand new one once that had cold solder point.

 

[Jackr987]

Could be a contact in the PSU itself or even the switch on it, I had a bad brand new one once that had cold solder point.

Yeah I'll try to replace the psu somepoint this week, see if that fixes the issue. It's strange, it's been running fine for years with no damage to the psu that could have caused loose connections.

 

[nostall]

Time and heat can wear out electrical parts. Count Mike is probably correct: Something in the PSU is going out and a bad solder joint is a pretty good guess.