Results 1 to 7 of 7

Thread: Dell Optiplex 755 Slim

  1. #1
    Newbie
    Join Date
    Sep 2011
    Posts
    2

    Dell Optiplex 755 Slim

    So I'm not exactly sure where to post this but anyway here goes.

    I want to hook this computer up in my car i already have a touchscreen in my car and everything is setup and working but the problem is that the computer power supply causes a buzz in the cars speakers. I have a power inverted plugged into the car then the computer and touchscreen plugged into the inverter. The computer us plugged into the cars stereo system through an aux port. If the computer is unplugged and plugged into a socket from the house, the sound goes away.

    The computer has a power supply similar to a laptop, but the part that goes into the back of the copmputer is and 8 pin pci e plug, can the power supply be discarded so i don't have to go from ac to dc to ac?

    Edit: I checked again today and the sound that the computer produces through the speakers in the car is there even when i unplug the audio cable. It's definitely coming from the power brick. It's the DA-2 model power brick and it seems the pins on the back are not the same as a pci e plug. I really want this to work D: I have already modified have my car for this computer.
    Last edited by Bobby Calhoun; 09-24-2011 at 11:28 PM.

  2. #2
    Newbie
    Join Date
    Sep 2011
    Posts
    2
    are these forums alive?!?

  3. #3
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    Location
    Elsewhere
    Posts
    13,950
    Quote Originally Posted by Bobby Calhoun View Post
    are these forums alive?!?
    Considering the forums are nothing but code which boils down to intricately organized 0s and 1s being processed on silicon chips and stored on magnetic platters....
    They never were technically "alive".

    Now to address your issue.

    I want to hook this computer up in my car i already have a touchscreen in my car and everything is setup and working but the problem is that the computer power supply causes a buzz in the cars speakers. I have a power inverted plugged into the car then the computer and touchscreen plugged into the inverter. The computer us plugged into the cars stereo system through an aux port. If the computer is unplugged and plugged into a socket from the house, the sound goes away.
    Lose the inverter and get a DC-DC power supply that will work with your PC.
    Check the mp3car.com store for different models. Check in the FAQs to see what will work for your setup.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  4. #4
    MySQL Error soundman98's Avatar
    Join Date
    Jan 2008
    Location
    on the border of northern IL/IN
    Posts
    5,820
    or you will need to start shelling out money to locate a inverter that doesn't have the buzz. so far, there is not a list anywhere so it would be trial-n-error...

  5. #5
    Low Bitrate
    Join Date
    Jul 2011
    Location
    Sydney Australia
    Posts
    93
    Is it a Modified Sine Wave Inverter or Pure Sine Wave Inverter? Most Pc's and Laptop's psu's dont like Modified Sine Wave Inverters. They create too much noise and i have had a psu blow with a Modified Sine Wave Inverter. Pure Sine Wave Inverters are a better choice if you dont already have one. As the guys^ say. dc-dc psu is the best option
    Last edited by pcmoto.com.au; 10-16-2011 at 09:02 AM.

  6. #6
    Newbie
    Join Date
    Oct 2011
    Posts
    5
    Quote Originally Posted by DarquePervert View Post
    Considering the forums are nothing but code which boils down to intricately organized 0s and 1s being processed on silicon chips and stored on magnetic platters....
    They never were technically "alive".

    Now to address your issue.


    Lose the inverter and get a DC-DC power supply that will work with your PC.
    Check the mp3car.com mini mp3 players store for different models. Check in the FAQs to see what will work for your setup.
    how use multimeters in the dc-dc power supply.
    Last edited by rtigu; 10-31-2011 at 04:57 AM.

  7. #7
    Newbie
    Join Date
    Oct 2011
    Posts
    5
    Quote Originally Posted by Bobby Calhoun View Post
    So I'm not exactly sure where to post this but anyway here goes.

    I want to hook this computer up in my car i already have a touchscreen in my car and everything is setup and working but the problem is that the computer power supply causes a buzz in the cars speakers. I have a power inverted plugged into the car then the computer and touchscreen plugged into the inverter. The computer us plugged into the cars stereo system through an aux port. If the computer is unplugged and plugged into a socket from the house, the sound goes away.

    The computer has a power supply similar to a laptop, but the part that goes into the back of the copmputer is and 8 pin pci e plug, can the power supply be discarded so i don't have to go from ac to dc to ac?

    Edit: I checked again today and the sound that the computer produces through the speakers in the car is there even when i unplug the audio cable. It's definitely coming from the power brick. It's the DA-2 model power brick and it seems the pins on the back are not the same as a pci e plug. I really want this to work D: I have already modified have my car for this computer.
    I agree the idea .

Similar Threads

  1. Dell Optiplex 380 Motherboards
    By carpcguy in forum Classifieds
    Replies: 0
    Last Post: 07-27-2011, 03:34 PM
  2. FS: Dell Optiplex GX100
    By necrolyte in forum Classified Archive
    Replies: 0
    Last Post: 09-04-2006, 11:43 PM
  3. DC-DC PSU and Dell Optiplex gx520
    By OmegaAvenger in forum Power Supplies
    Replies: 11
    Last Post: 08-20-2006, 06:49 PM
  4. FS: Dell Optiplex sx270 - P4 2.8 - SFF PC!
    By kiztope in forum Classified Archive
    Replies: 0
    Last Post: 04-29-2006, 07:33 PM
  5. Dell optiplex gx 270
    By sonofabitch in forum General Hardware Discussion
    Replies: 0
    Last Post: 11-03-2004, 06:01 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •