Printed board polarity correct? How can I tell?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • kiddznet
    Senior Member
    • Jul 2010
    • 176
    #1

    Printed board polarity correct? How can I tell?

    Can somebody help which is the negative connection on this Speed 580W PSU?



    Ive got two new 470uf 250v caps to try and as I never took em off wanna be sure
    Last edited by kiddznet; 07-30-2010, 07:33 PM.


    939 DualCore AMD Opteron, 1800 MHz (9 x 200)
    Abit AN8 / Fatal1ty AN8 SLI Series
    3072 MB (PC3200 DDR SDRAM)
    ATI Radeon HD 4300/4500 Series (1024 MB
    Lian LI Aluminium mesh case
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Printed board polarity correct? How can I tell?

      Originally posted by kiddznet
      Can somebody help which is the negative connection on this Speed 580W PSU?
      The shaded or black area is negative (short lead).
      --- begin sig file ---

      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

      Please do not post inline and offsite as they slow down the loading of pages.

      --- end sig file ---

        Comment

        • kiddznet
          Senior Member
          • Jul 2010
          • 176
          #3
          Re: Printed board polarity correct? How can I tell?

          Thank you Sir! up and running. I had to drill another connecter hole in the board to alow the two fat Rubycons in

          PS. Don't look to close at the bridge I put in the blown fuse!

          Last edited by kiddznet; 07-30-2010, 08:59 PM.


          939 DualCore AMD Opteron, 1800 MHz (9 x 200)
          Abit AN8 / Fatal1ty AN8 SLI Series
          3072 MB (PC3200 DDR SDRAM)
          ATI Radeon HD 4300/4500 Series (1024 MB
          Lian LI Aluminium mesh case

            Comment

            • c_hegge
              Badcaps Legend
              • Sep 2009
              • 5219
              • Australia
              #4
              Re: Printed board polarity correct? How can I tell?

              Nice, but it still could use a few more things.

              1. Replace the fuse! NEVER run a PSU with a jumped fuse.
              2. Replace the the rest of the caps with good quality ones.
              3. Replace the 4 diodes near the primary caps with a rectifier.
              4. A beefier main transformer.
              I love putting bad caps and flat batteries in fire and watching them explode!!

              No wonder it doesn't work! You installed the jumper wires backwards

              Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

              Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                Comment

                • kiddznet
                  Senior Member
                  • Jul 2010
                  • 176
                  #5
                  Re: Printed board polarity correct? How can I tell?

                  I looked at the rest of the caps, man you should see the jumble that is the soldering on the bottom of the board!
                  If found this baby in the rubbish bin, it will be a good supply for testing all the equipment I find...er... in the rubbish bin!


                  939 DualCore AMD Opteron, 1800 MHz (9 x 200)
                  Abit AN8 / Fatal1ty AN8 SLI Series
                  3072 MB (PC3200 DDR SDRAM)
                  ATI Radeon HD 4300/4500 Series (1024 MB
                  Lian LI Aluminium mesh case

                    Comment

                    • goodpsusearch
                      Badcaps Legend
                      • Oct 2009
                      • 2850
                      • Greece
                      #6
                      Re: Printed board polarity correct? How can I tell?

                      With that transformer it is limited at ~250w.

                        Comment

                        • 370forlife
                          Large Marge
                          • Aug 2008
                          • 3112
                          • United States
                          #7
                          Re: Printed board polarity correct? How can I tell?

                          Looks like a diablotek DA series.

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • 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
                            • 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...
                              ORIGINAL POWER SUPPLY BOARD
                              7 Photos
                              11-22-2024, 01:46 PM
                            • sotodefonk
                              Help finding the correct model of a T-Con board on my Hitachi TV
                              by sotodefonk
                              Hi, I have a Hitachi tv model L47V651, there is no image, but sound and backlights turn on, so I believe the issue is the tcon board.

                              I opened the tv to access the board and took the shared pictures of the T-Con board.

                              I saw a video from shopjimmy on how to detect the model number on tcon boards, but this doesn't have a sticker like how that video showed all boards.

                              I searched the P/N number and got results with the same marking name and P/N my board has but they list other specific tv models like Vizio and Philips brand but not Hitachi.

                              Inspecting...
                              T-CON Board Pic1
                              2 Photos
                              06-28-2024, 04:39 PM
                            • howardc64
                              A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
                              by howardc64
                              Problem

                              This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
                              08-04-2024, 10:36 PM
                            • Hakuu
                              LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
                              by Hakuu
                              Hi There,

                              This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.

                              After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.

                              More Details

                              TV Model - LG OLED77G1PUA

                              Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
                              07-12-2023, 02:37 PM
                            • Loading...
                            • No more items.
                            Working...