HTPC powering up but not posting / displaying

strocky

strocky

strocky

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Joined
9 Jul 2007
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406
Streacom F5 Silent HTPC purchased a few years second hand, ran fine for 12 months, was unplugged for about 3 months while I did a mancave upgrade

3 Months later, when I plugged it back in, the power would go straight on and then off (I could hear an audible sound as if a HDD was spinning then stopping)

After a few attempts exhibiting the same behaviour, I left it for a few days

When I returned it now powers up (and stays powered as per photo) but can't get it to post

I've tried it on several monitors via both HDMI & DVI to avail (signal not detected)

Any ideas?

7VDjLu5.jpg


Th4PKya.jpg
 
The spinning noise is more then likely going to be the PSU as the hard drive looks like an SSD.

I would say it's either going to be the PSU or motherboard, are you able to test with another PSU?
 
labcoattech said:
The spinning noise is more then likely going to be the PSU as the hard drive looks like an SSD.

I would say it's either going to be the PSU or motherboard, are you able to test with another PSU?
Click to expand...
Yep was more the noise was like a HDD rather than the SSD

Haven’t got a spare PSU but can access a multi meter to see if it’s the PSU

Thanks for the pointers, lads
 
cant see a 20 or 24 pin atx connector on that board so looks like its an external psu ?

as for the comment about the HDD, above poster is correct there is no HDD in the pictures you have taken, only the samsung SSD


1 other trick that occasionally works is to disconnect the power and hold the power button down for 30 - 60 seconds to completely discharge the motherboard, then plug it back in and see if it will power on, possibly it is the external power brick though, a multimeter will only tell you if it is putting out the correct voltage, you really need to check the voltage when it is connected to the machine when you press the power button to see if the voltage is dropping.
I had this exact issue with a customer PC 2 weeks ago, PSU looked fine, lite up the power LED on the back of the pc but wouldn't power it on. replaced PSU and it powered straight up
 
I would replace the Bios Battery first because you say its been Disconnected a long time so Battery could be flat and a flat Battery can cause issues.
 
have you tested voltage from power brick whilst it is plugged in and you try turning it on ?
it could be dipping and causing the problem.

Also there is no speaker plugged in to the board, it is possibly throwing beep error codes out that you aren't hearing.

To me this seems like either a faulty motherboard or a faulty PSU.
 
Apologies for the very delayed reply, replaced the BIOS battery, used a meter on the PSU un-attached outputs 12.5a
Attached to the HTP outputs 12a

MB green light and HTPC blue power light now remain on, however still no video output
 
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... @ a dbox2, not seen one of those in use for a loooong time. Reset the CMOS, plug in a GPU and see if that helps, check MB manual and try one stick of RAM in appropriate slot, swap with the other if that doesn't work, i'd suggest at least trying to borrow an ATX PSU to test with to eliminate that.
 
Avalon said:
... @ a dbox2, not seen one of those in use for a loooong time. Reset the CMOS, plug in a GPU and see if that helps, check MB manual and try one stick of RAM in appropriate slot, swap with the other if that doesn't work, i'd suggest at least trying to borrow an ATX PSU to test with to eliminate that.
Click to expand...
Yep a blast from the past

Thanks for the advice
 
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