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Old 12-11-2013, 12:49 PM   #1
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Default Intermittent boot problem DN2800MT

I am totally confused!
After building and using an Intel DN2800MT based computer for a few months, it has started to become unreliable.
I use the computer on a boat. It is designed to operate between 8 and 19
Volts. To regulate the supply I use a DC-DC converter that is set to 14 Volts.
On occasions the PC does not start.
I have checked everything I can think of, ie.
On the 12Volt battery:- Sometimes starts sometimes won't!
On a suitable mains adapter :- Sometimes starts sometimes won't!
On the on board DC-DC regulator :- Sometimes starts sometimes won't!
One thing that seems common, when I take it home, wait for about half an hour, it starts and will start every time (so far!)
Put it back on board, and it starts first time then starts messing about again!
I was thinking of temperature (Ireland = cold and damp) or humidity, so stuck it in the fridge for an hour or so, took it out and you guessed it, it started and is working fine. What about crazy RF Interference in the marina?
All the unnecessary parts have been left off in all testing.
Weird ! or am I missing the obvious?
Hoping that someone can help.
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Old 01-05-2014, 05:04 AM   #2
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Thumbs up

Next time before powering on the computer, I would suggest we discharge the computer first as below :

1. remove the power sources
2. pressing the computer power button over 20 seconds do not let go

Then connect the power source again and power on the computer as usual.

Hope this discharge can help.

Tech Manager, WPTinc.
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Old 01-05-2014, 12:19 PM   #3
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I'd say you have a bad connection somewhere. Re-seat the RAM, power connectors and any other expansion cards.
No wonder it doesn't work! You installed the coils backwards!

Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium.
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