Question about Dell Dimension 4550 PC Desktop

2 Answers

Dell Dimension 4550 will not power on but standby light on.

Hello - A friend has asked me to look at her Dell Dimension 4550 PC Desktop. It will not power up. When I opened it up I notice the power standby light comes on. I am concerned that the problem is somewhere in the J9H2 power on switch. I have tried to rule other things out. If the standby power light comes on does that tend to indicate that the power supply is okay? I know it could be many things including the hard drive and perhaps the motherboard itself. I tend to think it is in the power on switch since this is the area that would have taken the most wear and tear from being pushed on and off. Any suggestions are welcome.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 61 Answers

Hey! Normally, I would have said exactly what the previous poster said. It is almost always the power supply. However, I am typing this message from a Dell 4550 that has a bad power SWITCH. I came home from a week's vacation and the PC would not power up - nothing, nada. I saw the green light on the mobo, so I figured it had power. Took the case apart, which is a huge pain. Decided to channel my inner MacGyver and put a screwdriver across the terminals for the power switch. She booted right up and has been running ever since.

The power button on this computer, and most these days, just closes long enough to discharge a capacitor on the mobo, which fires up the power supply. So, jumping it with a screwdriver lets that happen, yet it doesn't go off when you remove said screwdriver. Good luck!

BTW, if anyone knows how I can get another switch (it's installed on a little mini circuit board), that would be great.

Posted on Jul 24, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Dell Master
  • 1,314 Answers

In all my years of fixing computers, 98% of the time it is the power supply, 2% the motherboard and 0% the switch. Just because the standby light is on does not indicate that the power supply is functioning correctly. The power supply puts out many different voltages....5v, 12v, 1.3v, and 3.3v. If the 3.3 is working then the standby light will come on but if any of the others are not working correctly then the computer won't turn on at all. You can check the switch by checking the resistance of the two wires that the switch are attached to using a multimeter. When the button is depressed, it should go to 0 and when it is not depressed it should be at 1. I would suggest swapping out with a known working power supply to verify the issue.

Posted on Jun 25, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

SATA on dell dimension 4550 with Debian


look in the devicemanager what does it say.
update thrue the deviemanager or search the internet

May 26, 2013 | Dell Dimension 4550 PC Desktop

1 Answer

Dell 4550 keyboard failure


Hello, Sounds like you have either bad connection or keyboard, try powering down the computer and reseating the keyboard.If that doesn't work , replace.

Oct 27, 2011 | Dell Dimension 4550 PC Desktop

1 Answer

Where can I buy a clock battery for a dell dimension 4550?


hello

Real Time Clock batteries (aka RTC battery) are found at most computer shops. They are common for most other makers of desktop computers.
depending on your geographic area, seek out computer stores, like Office Depot (Staples), Circuit City, Best Buy, or call Dell and get them to quote you (i am certain they are higher costs than others).

hope this helped you

Nov 08, 2010 | Dell Dimension 4550 PC Desktop

2 Answers

Dell dimension 4550 ethernet driver please


Dell dimension 4550 Ethernet Driver Installation Guide

1. Go here to download and install the Chipset - Intel driver.
2. Restart the computer.
3. Then go here to download and install the Ethernet driver.
4. Restart again.

Aug 20, 2010 | Dell Dimension 4550 PC Desktop

2 Answers

Dell Dimension 4550 Ethernet Hardware not working, cannot reload drivers.


Have you tried restoring your operating system? If not, please do so. There is a problem with operating system and the driver of your ethernet hardware. There might be a conflict on it.

Jul 12, 2010 | Dell Dimension 4550 PC Desktop

1 Answer

Standby power LED (CR4G1) comes on but that's it, will not start up. Replaced power supply and entire switch assembly with known good parts. Any possible explanation other than bad motherboard?


I have repaired this Model 4550. Unplug power cord FIRST. Is the Replacement Power Supply NEW? Did you plug the Power Supply in BEFORE you purchased it? Always do that BEFORE you buy it.

Oct 21, 2009 | Dell Dimension 4550 PC Desktop

1 Answer

Standby mode


see if there is aproblem with your power supply

Apr 17, 2009 | Dell Dimension 4550 PC Desktop

4 Answers

Download audio drivers for my dell dimension 4550


From link included select your version from (3) and sound card driver, download and install as instructed. I also recommend check out Dell support for 4550 PC at this link. Please rate me mysleuth

http://search.dell.com/results.aspx?spf=Dimension&ssysid=DIM_PNT_P4_4550&ssysn=4550&s=gen&c=us&l=en&cs=&ec=&ira=False&cat=sup&subcat=dyd%2F3&rf=all&evl=&nk=f&k=dell+dimension+4550&p=1&nf=&rpp=12&sort=K&~srd=False&ipsys=False&advsrch=False&p=1

Mar 19, 2009 | Dell Dimension 4550 PC Desktop

1 Answer

Dell dimensio 4550


you need to replace your motherboard. contact vendor

Dec 15, 2008 | Dell Dimension 4550 PC Desktop

Not finding what you are looking for?
Dell Dimension 4550 PC Desktop Logo

1,329 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18391 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2017 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...