Dell Inspiron 3847 Replacing Case Run into Front Panel Pinout Problem

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Sprthdwr

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Dell Inspiron 3847 Intel I3-4150

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Replacing the Dell case with a generic one. All worked well except the front panel connector. I know which wire goes to which pin. Except the Dell power button jumper. It prevents my PC to turn on. How do I work around it?

When I press the power button, motherboard gets the power. I can open the optical drive tray and I see power button light and hard drive led light. Only PC won't turn on.
 
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Sprthdwr

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Please help! Anyone?

"Replacing the Dell case with a generic one. All worked well except the front panel connector. I know which wire goes to which pin. Except the Dell power button jumper. It prevents my PC to turn on. How do I work around it?

When I press the power button, motherboard gets the power. I can open the optical drive tray and I see power button light and hard drive led light. Only PC won't turn on. "

I guess I can buy a used Dell power button/switch. The problem of it is that I then won't be able to close the new PC case. The power switch will be dangling on the side, because I'll need it every time I turn-on and -off my computer. I really don't want to go this route.
 
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Sprthdwr

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I have found a solution that might work. It involves BIOS setting "After Power Failure" option. I'll select "On". The default is "Stay Off". If this trick works, I'll never need to press the power button on my new generic PC case.

I do have a power station that controls my PC's, monitor's, speakers', and printer's power On and Off. They all have separate switch and a master switch for all. So I don't have to unplug the power cord of the PC every time.

Now, I'll put the motherboard into my Dell case for one more time to work the BIOS. I hope it's the last time I use this Dell case. I hate Dell. I will report back. Stay tuned.
 
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Sprthdwr

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My trial result is here. It's a good one.

I went into the BIOS. Found "AC Recovery" - Dell's lingo for "After Power Failure". Set it to "Power on".

Long story short. I have to use the Dell's power button which is removed from the Dell's case. I let it dangle inside the new case. I can close the case panel now, because there's no more need for pressing the power button after I set the BIOS. The PC will boot every time I turn on the power switch on the power station.

However, when turn off the PC, I must use the sleep function to put the PC sleep. Then cut off the power. I just have to remember NOT to use "Turn off". Use "Sleep" instead. Otherwise, I will have to press the power button to boot the PC.

One way or another, now I have the new generic PC case working (with Dell's motherboard inside and using Dell's ear marked Windows operating system). Things missing are power LED light and hard drive LED light. That's fine with me. I don't need them. I don't use the front audio ports, either. They do work fine however. The front USB ports work perfectly. That's all I ask for.

After this ordeal, all I can say about Dell is it is hideous and cynical. I beat it. For that, I feel good and proud of myself. I will not spend my money on Dell's products in the future. I will always remember the unpleasantness with the only Dell's PC I had.
 
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Sprthdwr

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Solved.

I see a lot of people buying and replacing power supply, video card, etc. All unnecessarily. Now you know the culprit is the Dell's power button. And how to beat it. Good luck in your endeavors.
 
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korros1on

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Feb 2, 2016
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Heres a pic

 
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Sprthdwr

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Thank you for your solution. I don't want to cut anything in the new PC case, since I may use the case for a standard motherboard in the future. For now, I use the Dell's power button removed from the Dell's case. I went into the BIOS and set the PC always on after power loss. I then use the power switch on the power station to control On and Off. That works very well. (My PC, monitor, speakers, and printer are plugged into the power station with individual switches for all. )

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That's the power station I'm talking about. Currently, no one is making them as far as I know. They are out of fashion. I call it Dell's medicine. l have 3 in my collection. :)

Now, I'm sure you already know that the USB1 on the Dell's motherboard is proprietary. It doesn't work with the standard front USB plug. However, the USB3 is a standard one. It's intended for the Dell's card reader. I plug the standard USB plug to the USB3. All's working well.
 
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Sprthdwr

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Updated with a picture of the "Power Station". It is a critical part in my working solution. In case anyone doesn't have one available, he can simply switch off/on the power button on the Power Supply Unit (PSU). If his PSU doesn't have a switch, like on Dell's and HP's units, a simple pull of the power plug will get the job done. Whichever way you choose to do, the end result is the same, a working PC.

The added bonus is a working PC that Dell doesn't want you to have.
 
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asishsharma

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Hello, I have successfully created the power button to use with the DELL inspiron 3847. Its quite simply honestly, so what I did was cut and stripped the original power connector and placed it in the slot, with the 2 wire I inserted them into the power sw and bam! Done working fine look at my pics. THANKS http://s1024.photobucket.com/user/Asish_Sharma/library/
 
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cat1092

cat1092

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Would be great if a XPS 8700 case could be reused in the same manner. Unfortunately, it doesn't have the holes for standoffs that's needed for a Full sized ATX MB & am not 100% certain that a mATX will fit, though will try.

Each one of these wires serves a purpose (some having a 'placebo effect' to discourage reusing), it's obvious where USB goes, as to the others, usually only 5-6 wires are needed for a new MB install, other than the USB 2.0 ports, and so forth. Am hoping to reuse the tower for an AMD build in use that's in a case that'll hold the ASRock Z97 Extreme6 that's arriving today, which I'll do first. Since I don't want nor need the Dell OEM install, can remove it with a partition tool & slide Windows 10 Pro over beside of Windows 7 Pro & perform a 'bare metal' restore onto the Z97 MB. Will also be using the i7-4770 that's underpowered by Dell, not providing twin 4 pin CPU power inputs, hopefully the PSU will handle the FX-6300 fine, if not, have a spare that will.

Unless the XPS 8700 MB will install in a Dimension 2400 case, won't be reusing the MB, should that work, will grab a cheap Pentium Anniversary Edition CPU & install in there. Then will have the baddest Dimension 2400 in town.;-)

Cat
 
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