Jump to content
RESET Forums (homeservershow.com)
Rodf

Trying to find the right power switch for my XPS

Recommended Posts

Rodf

I've got a Dell XPS 8700, which I purchased from Costco about 4 years ago. The power switch has been causing me some problems in starting it when I shut it down, for a while now. Last Sunday I shut it down to blow the dust out of it (I live in New Mexico, dust is a reality everyone deals with here). When I tried to turn it on, it wouldn't work. No sound, nothing. We took it to Best Buy and had them look at the power supply - it's fine. Their guess is the motherboard might be bad. And they claim that, given the age of the machine, a replacement motherboard, memory, CPU, etc. would rise it close to the price of a new PC anyway. Honestly, getting a new PC is just not in my budget at the moment. I was hoping to get another year, maybe 2 out of this thing.

 

So I talked this over with a colleague at work. He suggested that the problem might be the power switch. That kinda makes sense, especially given what I said earlier about experiencing problems with it turning on for a while now. So we tried looking it up. Even though I had the service tag for it (DK49122), when I went to Dell's website, I couldn't find anything there about the power switch. Looking further my colleague and I came across this page on Dell's community/forums: https://www.dell.com/community/XPS-Desktops/XPS-8700-power-button-broke/td-p/5761325. One person poo-pooed the whole power switch is the issue thing, but others in that thread agreed that they had an issue with the power switch on their 8700. So, tonight when I got home I did more looking into it to see if I could find the replacement part, which looks like it's F7M7N from the link I gave previously. I've looked on Amazon where I found this https://www.amazon.com/Power-Button-Switching-0F7M7N-F7M7N/dp/B07VFRR21G/ref=sr_1_7?hvadid=77653121202498&hvbmt=be&hvdev=c&hvqmt=e&keywords=f7m7n&qid=1571963282&sr=8-7. I'm a bit put off by the 1 star rating for that seller. So, I looked at Newegg to see what they had, I came across this https://www.newegg.com/p/2S7-01JA-13DF7?Description=F7M7N&cm_re=F7M7N-_-9SIAJHYA719437-_-Product

 

Now, what bothers me is that on Amazon the part is F7M7N, but on Newegg its cn-F7M7N. I don't like that variation. How can I tell which one I should go with?

Share this post


Link to post
Share on other sites
schoondoggy

First, I would confirm it is the switch. PC power buttons are a momentary contact switch. The user guide details the removal process for the switch assembly. You need to be able to get to the back of the switch and bridge/short the two wires to see if the system starts. If it starts by bridging, then it is likely that the switch is bad.

If you want to replace the entire assembly I would look at this:

https://www.ebay.com/itm/New-Power-button-with-Switching-Line-For-DELL-XPS-8300-8500-8700-0F7M7N/274065774246?epid=21034592009&hash=item3fcf97d6a6:g:c1IAAOSwi~FdsXHu

If you can reuse the plastic mount I would look at this:

https://www.ebay.com/itm/XPS-Case-Cable-Switching-Line-for-Dell-XPS-8300-8500-8700-0F7M7N-F7M7N-DJ/163881456827?hash=item26281894bb:g:d5IAAOSwmU1cvncB

You could also just replace the switch.

Share this post


Link to post
Share on other sites
Rodf

What user guide are you referring to?

Share this post


Link to post
Share on other sites
Rodf

Did you mean the Owner's Manual?

Share this post


Link to post
Share on other sites
Rodf

Her Schoondoggy, I've got a chance to get at the power button. Looking at it I don't see how I can bridge the wires. They're covered with plastic/rubber right down to the base of the button, on the under side of the switch. 20191026_105341.jpeg

It's the red and blue wires

Share this post


Link to post
Share on other sites
schoondoggy

you could use two tacks or pins to penatrate the insulation and make contact with the wires. then short between the two tacks/pins.

  • Like 1

Share this post


Link to post
Share on other sites
Rodf

Praise God a new power switch is what it took!! Its in place and I'm using my ol', trusty desktop PC. YEEHA!!  Will have to save up for a new desktop, but at least I now have a breather.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



×
×
  • Create New...