Dinomight
1 Copper

Optiplex GX520 Random Shutdown/Sleep

Hey Guys,
I am having some really wierd behavior, and random times my GX520 (Small form factor) shuts itself down (or sleeps i can't tell which) the screen goes blank and my power switch/led goes into a flashing amber state. This happens every so often, sometime while i am working other times when i look away. The only way to get it out of this state is to hold the power button until it turns off, and then turn it back on. Does anyone know what this might be.... i saw some threads on capacitor issues, but i haven't had a chance to open it up and look at all of the caps i thought i would ask here first to see if this is even an applicable issue. Any help would be apreciated.

Thanks,
Dinomight
0 Kudos
9 Replies
speedstep
6 Thallium

Re: Optiplex GX520 Random Shutdown/Sleep

Power supply and or overheating problem.

Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






Get Support on Twitter @DellCaresPro

0 Kudos

Re: Optiplex GX520 Random Shutdown/Sleep

Problem: Customers may report that Optiplex GX520 and Optiplex GX620 systems which ship in the Smith (MT) & Cypher (SFF) chassis shut down after 3-4 seconds of being powered on.

 

Discussion: The failure is caused by the power switch in the Front I/O Panel Assembly electrically shorting to a trace on the PCB which is directly beneath the switch.

 

The Front Panel P/N for the Smith (MT) chassis is X8921.

 

The Front Panel P/N for the Cypher (SFF) chassis is D9091.

 

Solution: The engineering teams are currently investigating this issue. If a customer reports this failure mode then it is likely to be as a result of a failing I/O panel.

 

Fix on Fail by replacing P/N X8921 on Smith chassis failures from service stock.

Fix on Fail by replacing P/N D9091 on Cypher chassis failures from service stock.

 

0 Kudos
KERDEVAN
1 Copper

Re: Optiplex GX520 Random Shutdown/Sleep

Smiley Wink
Hi, I have had some success with re-seating the CPU, cleaning off the old thermal paste and re-applying good/new paste. Leave the box running diagnostics for up to three days with no failures.
Kerdevan
tawnyman
1 Copper

Re: Optiplex GX520 Random Shutdown/Sleep

Hi Dinomight,

I have 16 GX520's and I have had the same problem on 2 of them. After a little research I discovered that the power supply fan slows down after being switched on for about 15 mins and when the temperature reaches critical, whammo and the amber light problem occurs as you've got.

Solution, get the power supply out, clean it and get a 70mm chassis fan replacement from any good parts store and replace it. That solved all my issues.

0 Kudos
bud2888
1 Copper

Re: Optiplex GX520 Random Shutdown/Sleep

Tawnyman thanks for the post. You were absolutely correct, PC would shut down about 2 hrs after startup. I've done thorough  test on  HDD, reseated the processor, cleaned and applied fresh heat sink compound on the processor. Tested the voltages on the Power Supply and all is good, but keeps shutting down after about 2 hours.

Replaced the power supply fan and it has been running over 24 hours without fail. $3.00 fan beats the heck out of replacing $80 power supply! 

0 Kudos
lenferre
1 Copper

Re: Optiplex GX520 Random Shutdown/Sleep

You may have noticed a little bit more of noise also?

The CPU FAN has become noisier than usual; this means the PC maybe over heating.

  1. CPU FAN must be Clean/replaced if you could. 
  2. Replace the Power Supply.

I have the same issues and corrected them with the same steps.

Best of luck,

Len

MCSE, DELL Premiere Certified.

0 Kudos
Ketan Chauhan
1 Copper

RE: Optiplex GX520 Random Shutdown/Sleep

Dear sir,

I have dell gx520 optiplex.  I worked on pc many times automatic shutdown & some processor running very fast no vision on screen

0 Kudos
Ketan Chauhan
1 Copper

RE: Optiplex GX520 Random Shutdown/Sleep

 I am having some really wierd behavior, and random times my GX520 (Small form factor) shuts itself down (or sleeps i can't tell which) the screen goes blank and my power switch/led goes into a flashing amber state. This happens every so often, sometime while i am working other times when i look away. The only way to get it out of this state is to hold the power button until it turns off, and then turn it back on. Does anyone know what this might be.... i saw some threads on capacitor issues, but i haven't had a chance to open it up and look at all of the caps i thought i would ask here first to see if this is even an applicable issue. Any help would be apreciated.
Please do needful to me

Ketan

0 Kudos
tawnyman
1 Copper

RE: Optiplex GX520 Random Shutdown/Sleep

I have posted on this before Ketan,

My problem was the power supply fan slowing down after about 2 hours and overheating occuring. I replaced the 70mm fan in the power supply and the problem disappeared. These fans can be obtained over the internet or by recovery from other power supplies/pc's etc. The age of the pc's prevents an expensive fix in my opinion. Salvage a fan from somewhere and try it.