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4 Posts

10-24-2018

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S30 Thinkstation won't boot - flashing green light on PS

2018-10-24, 23:35 PM

I have a Thinkstation s30 that has been running fine for a few years. Yesterday, it just shut off without warning and now it won't boot. The only sign of life is a flashing green light under the power cord in the back.

 

Here are the stats:

Machine type 0568

Model Number 51U

8-core with 32 GB RAM

 

I can't find anything referring to the flashing green light. I know the amber means replace the PS. Been there, done that.

 

Thanks for any help!

 

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1107 Posts

01-14-2014

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Re: S30 Thinkstation won't boot - flashing green light on PS

2018-10-25, 13:47 PM
Have you tried unplugging AC power for a minute?
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4 Posts

10-24-2018

United States of America

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Re: S30 Thinkstation won't boot - flashing green light on PS

2018-10-25, 20:59 PM

That's the first thing I did. Then I left it unplugged over night and tried again in the morning. Same result.

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5031 Posts

02-22-2010

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Re: S30 Thinkstation won't boot - flashing green light on PS

2018-10-30, 16:23 PM

The green LED on the back of the PSU should be on whenever there is 5V standby present.  I don't think that LED "blinking" is a defined state, which would lead me to believe there's possibly something wrong with the power supply.

 

 




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4 Posts

10-24-2018

United States of America

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Re: S30 Thinkstation won't boot - flashing green light on PS

2018-10-30, 16:40 PM

-UPDATE-

So I started unplugging the connectors to the mother board. Once they were all disconnected, the power supply light stopped flashing and remained on. I began reconnecting them one by one and the light began flashing again when I plugged in the large motherboard connection. This leads me to belive that the motherboard is done.

 

I replaced the PS 2 years ago and now with a spent MB, I'm not sure it's worth it to keep resurecting this device.

 

Any thoughts to the contrary?

 

 

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5031 Posts

02-22-2010

United States of America

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Re: S30 Thinkstation won't boot - flashing green light on PS

2018-10-31, 17:25 PM

Are you hotplugging the connections to the board while AC power is applied to the PSU?  That's probably not a good idea as there's a rather specific sequence that needs to happen for a PSU/board to power up correctly.

 

If you have the PSU isolated (i.e. no connections to the board) and plug in AC power, you should see the green LED on the back light up.  That simply indicates the 5VSB rail is alive, which is a critical component for the startup sequence.

 

If you then pull AC power and make ALL the necessary connections to the motherboard prior to applying AC power, and you're then seeing the green LED blink, it might be something on the board causing it, or it could be a PSU/motherboard interraction of some sort that's causing a problem with the 5VSB rail.  Like I mentioned earlier, a blinking green LED is not really a supported diagnostic state for that LED, so it could be a number of things causing that to happen.  You'd really need another known good power supply to get an accurate determination of where the problem lies.  

 

 




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2 Posts

04-09-2019

Jamaica

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Re: S30 Thinkstation won't boot - flashing green light on PS

2019-04-09, 14:58 PM

I have the same problem in 2 machines out of 4. First one then, next day, the other are suddenly turned off and from that moment the green LED on the power supply continues to flash. I tried disconnecting all the connectors and leaving the machine turned off for hours but it had no effect. I also tried to replace the power supply but the problem persists. I doubt it could be due to a broken motherboard, the machines have always worked and it cannot be that in 2 days they break.

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2 Posts

04-09-2019

Jamaica

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  • Message 8 of 8

Re: S30 Thinkstation won't boot - flashing green light on PS

2019-05-24, 10:16 AM

None? Please help, thanks.

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