Dimension 9150 does not start up. Power light blinking Orange.

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Dimension 9150 does not start up. Power light blinking Orange.

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Hope somebody can help me. When I wanted to turn on my Dimension 9150, the powerlight started to blink orange. It does not start up. From the manual I understand that the cause is most likely the power supply. I changed that with a new supply, but still the same problem. What else can be the cause of this mall function?

Thanks

 

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  • Blinking amber light indicates the problem with the power supply INSIDE the computer.  So, please get it checked.

    Try one step, remove all the wires from the back of the cpu/tower including the power cable. Press the power button for 10 seconds. Plug back all the cables and wires and try.

  • Ad585

    Hope somebody can help me. When I wanted to turn on my Dimension 9150, the powerlight started to blink orange. It does not start up. From the manual I understand that the cause is most likely the power supply. I changed that with a new supply, but still the same problem. What else can be the cause of this mall function?

    Thanks

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    Ad585

    Check the sequence of the diagnostic LEDs on the front panel of the case.

    Have you checked that all the power and data cables are properly connected, by removing and reconnecting them?

    The Dimension 9150 Diagnostic Guide and Troubleshooter, is HERE.

    Bev.

     

     

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I am not employed by Dell

  • Thanks. I replaced the internal power supply with a new one and that didn't resolve the problem. Any other potential causes you can think of?

  • Diagnostic lights are not burning. Complete blank. Checked all cables and replaced power supply with a new one (with exactly the same specs.). Problem still remains the same. What else could cause this failure?

  • Ad585

    Diagnostic lights are not burning. Complete blank. Checked all cables and replaced power supply with a new one (with exactly the same specs.). Problem still remains the same. What else could cause this failure?

    Ad585

    Are there any *Beeps*?

     If you are comfortable working around computers, you could try the following:

    As you have replaced the power supply, I'll assume that you have installed a known working power supply.

    Unplug the cord from the power supply, hold the power button in for about 15/20 seconds, open the case, unplug the 24-pin power connector from the motherboard and jump the Green wire to one of the Black wires, reconnect the power cord and power the system on, if power supply's fan and the hard drive run, then the PSU should be good.

    Note: Do not remove any wires from the plug, use a small piece of wire or a paper clip as a jumper.

    Power supply checks out and the system still does not work, again remove the power cord, hold the power button in for several seconds to discharge the residue power, reconnect the 24-pin connector to the motherboard.

    Remove all the PCI cards, the video card [if applicable], memory, all peripherals, disconnect the data and power cables to all the drives, check that the front panel cable is connected to motherboard, with nothing else connected to the system, reconnect the power cable and power the system on.

    If you do not get any beep codes and/or there is no change in the diagnostic lights, it would appear that the motherboard has died.

    Bev.

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I am not employed by Dell

  • No beeps!

    I will try your suggestion. Thanks.

     

    Regards

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  • Just a thought, but a year later:

    I've just had the same problem, orange flashing light, diagnosed as an internal power problem. Taken the machine to bits and followed all the procedures recommended in these various threads ... disconnected and reconnected all the wim wams and sprockets and concluded that the I/O board was faulty ( The front switch board ). 

    Chatting to my IT man I explained that the two front USB ports in the front panel were intermittently working. It turned out that the pins in one of them were crushed thus shorting out the front panel.  Simple problem, easy solution but not one I've seen on any of the threads or posts about this problem.

  • After several hours of painful exercise on the Dell dimension 9150 and almost was ready to buy a power supply online, I chanced on this thread. Bingo! the front USB port has one of the pins bent and the black casing inside is gone. Twisted that pin to avoid shorting others and the PC powers up like a puppy. Thank you Luddite123. You just saved me!!!

  • Hi, I'm delighted to have been of assistance ... you've made my day !

  • Thank you, sir.  I am not that savy at taking apart the computers.  But my symptoms are very similar to what you described.  Front USB intermittently working, everyday I get an orange blinkiit light with no way to power on or off without holding the power button for 10 seconds.  I don't know what to do, so I yanked out the whole front USB and audio jack unit.  That was dumb, because the internal small power button is actually on the unit!  So I reconnected the grey, flat power cable, but left everything else disconnected ... And it booted up.  So far so good.  Thank you for the tips!  I kept trying a software solution and never thought about hardware short!

  • thanks member am going to try all producer

  • Nice help, I had same issue with front panel USB as well. I simply removed a Logitech Mouse dongle and the 9150 re-booted fine. I plugged it into the back and all is good now. . I suspect it got hit or something causing a shot., it is one of the older long dongles so it stuck out a couple of inches.   

  • I had a 9150 dropped off for some file recovery etc a few days ago, and cleaned it up (tons of dust on the fans and heatsink, ugh). After putting it back together, I plugged it in to see the blinking power button and ethernet port that everyone is describing here. 

    I knew for a fact it wasn't the power supply, since I used the power supply in it to boot up a asus 775 board with a core 2 duo the night before.

    What ended up working for me was disconnecting the ribbon cable attached to the front panel, removing the cmos battery, and plugging it in. It sits idle for a few seconds, then springs to life. It'll complain about inadequate voltage on the cmos battery and require you to press f1, but it'll boot up as soon as you plug it in.

    If you leave the cmos battery in and shut it down, it'll "remember" that you shut it down and wait for a signal to come from front panel to start it up again (which isn't going to happen if the front panel is toasted). That's why you pull the battery.

    Considering that this thing is about 10 years old, and the front panel is obviously not standard hardware, I'm not holding out much hope on a replacement front panel. I'll probably end up pulling the front panel out tomorrow to get a better look at it, and try to figure out what I can do about it, but yeah, you can get the thing to crank over with a busted panel if you absolutely need to.

  • Well poo.  I'd experienced the same behavior with a Dimension 9150 I claimed when my employer was getting rid of older hardware.  The problem was intermittent at first and at one point I was able to determine that an external HDD I had plugged into the front USB ports was causing issues.  The drive worked fine ... I just couldn't have it plugged in when the computer was powered on or it wouldn't boot.  There was also other flakiness with those USB ports while the computer still worked.  Eventually it began the flashing amber light routine and wouldn't boot at all.

    I went through the suggestions by shesagordie to verify the issue was not the PSU (I even tried another known working PSU).  I also disconnected everything but the PSU and saw the same flashing amber light with no beeps.

    I inspected the USB ports on the front panel for any bent or crushed pins but saw no such issues.  Still though I attempted the method by loituswrench which would take the front panel out of the mix all together.  No dice.  :(

    Does it sound like a bad motherboard at this point?  Anyone else try and succeed with some approach not already mentioned?

    Thanks for all the great ideas above, and thanks in advance if anyone has more ideas!