Is this normal on a Logic Board??

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • flyguy
    New Member
    • Nov 2011
    • 9

    #1

    Is this normal on a Logic Board??

    Can someone here please look at my pics of my IMac G5 20" Logic Board, i bought it to repair, and it has had capacitors replaced but will not power on or boot. There is only one LED lit and when you press the power button it just sounds like something is shorting out and the second LED Lights for a split second then nothing. Ive found something on the board that looks to me like a small piece of solder crossing some components it shouldn't, maybe its causing it to short out??

    Please can someone check my pics and give me some pro advice. Thanks.

    http://*************/photo/my-images...369371273.jpg/

    http://*************/photo/my-images...169541273.jpg/
  • dumpystig
    Badcaps Veteran
    • Jul 2011
    • 485
    • UK

    #2
    Re: Is this normal on a Logic Board??

    You need to post more focused, closer pics, those are not really detailed enough for decent analysis
    System: HP xw6600 Workstation, 650W PSU | 2x Intel Xeon Quad E5440 @2.83GHz | 8x 1GB FB-DDR2 @ 667MHz | Kingston/Intel X25-M 160GB SSD | 2x 1TB Spinpoint F3, RAID0 | 1x 1TB Spinpoint F3, backup | ATI FireGL V7700 512MB | Sony Optiarc DVD +/-RW | Win 7 Ultimate x64 | 2x Dell UltraSharp U2410f | Dell E248WFP

    Comment

    • ben7
      Capaholic
      • Jan 2011
      • 4059
      • USA

      #3
      Re: Is this normal on a Logic Board??

      Hmm, looks like someone who tried to repair it before did a sloppy solder job!

      -Ben

      EDIT:
      Next time, please do not start another thread on the same topic!
      https://www.badcaps.net/forum/showthread.php?t=17260
      Last edited by ben7; 11-05-2011, 05:38 PM.
      Muh-soggy-knee

      Comment

      • flyguy
        New Member
        • Nov 2011
        • 9

        #4
        Re: Is this normal on a Logic Board??

        I think they did, Ive re-soldered the joints just to be sure but still no luck
        Ive looked at the caps in the PSU and they look ok, the board is getting standby voltage, but it just wont start. Maybe i should recap it again??

        I'm at a loss, any advice would be great

        Comment

        Related Topics

        Collapse

        • Tynan Dill
          Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
          by Tynan Dill
          I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

          Upon bringing it home and plugging it up, it showed a standby light.

          I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

          The screen seems to blackout and stay black, but with a flashlight I can see the display.

          With my Playstation 4 connected via HDMI, and running a game I can hear sound.

          Assuming...
          11-22-2024, 01:46 PM
        • m1ch43lzm
          HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
          by m1ch43lzm
          Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
          Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
          05-12-2025, 08:37 PM
        • ohren
          Upgrading a Samsung ue55nu7096u with logic board from an ue55ru7105k -- good idea?
          by ohren
          I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.

          I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.

          The models launched in 2018 and 2019 respectively....
          09-08-2023, 05:24 PM
        • Yanleb
          LG 60PK550 Logic Control Board EBR63450301
          by Yanleb
          Hi all, I just want to share the repair of my 60PK550-UA TV set.

          The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.

          But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.

          All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
          C57: 3.30V
          C61:...
          07-20-2023, 12:38 AM
        • korben_dallas
          Will I have a bricked logic board after reflow of the GPU v-core U8900 chip on my Mid-2012 15" Retina Macbook pro?
          by korben_dallas
          Hi everyone! I'm trying to fix my black screen / failed U8900 GPU v-core on my Mid-2012 Macbook Pro 15" Retinaby doing a rework/reflow of the chip (once I determine that's the real issue; but it likely is).

          I've been disabling the GPU in NVRAM for a few years... but it's just time for a better solution.

          I'm new to soldering but the only feasible way to fix this issue is to do something myself.

          MY QUESTION:
          I've been seeing some people (on this forum mostly) run into issues with the logic board needing a serial number or it being deactivated (?)...
          02-14-2024, 12:23 AM
        • Loading...
        • No more items.
        Working...