Replaced some caps on an MS-7207 / K8MGN2 Board

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Doward
    Member
    • Jun 2010
    • 18
    #1

    Replaced some caps on an MS-7207 / K8MGN2 Board

    Video: http://www.youtube.com/watch?v=Y5XS0olm2ww

    Gateway board, thought this might help someone out. Next up is an AsRock board with some bad capacitors
    Tags: None
    • ant3202
      Badcaps Veteran
      • Jun 2006
      • 274
      • Singapore
      #2
      Re: Replaced some caps on an MS-7207 / K8MGN2 Board

      the desoldering stuff is cool

        Comment

        • mariushm
          Badcaps Legend
          • May 2011
          • 3799
          #3
          Re: Replaced some caps on an MS-7207 / K8MGN2 Board

          I can't say that it's a good job... it will work, but it's kinda lousy.

          That desoldering tool is crapy, doesn't have the thermal mass to heat up the board quickly and suck that solder out, hence why you got solder in the holes.
          Alternatively, heating up the back side with a hair dryer or something would have helped A LOT.

          It makes more sense (and it's easier) to just add solder to the leads, heat both leads solder points and wiggle the capacitor out.
          When you put the new capacitor in, you just heat up the solder and then take the solder out completely and use fresh solder. The way you did it is prone to damaging the vias when you put that needle in.

          Not sure how much that dab of rosin flux helps with soldering probably it's pointless.
          The iron should be so hot and touching BOTH the copper trace on the board and the lead that you should only have to put the solder wire between the lead and the iron tip to form a bridge then in 2-3 seconds you would just push the solder wire in and see it flow nicely. 3 seconds max everything, retreat solder wire, retreat solder iron tip... nice solder job.

          The way you do it it's a bit risk that you get cold solder joins, because the copper back of the board sucks all the heat away, it looks like you have a hard time getting the solder to flow there.
          Wiggling caps won't give you 100% check for cold solder joints... lead is thick enough and hole is thin enough theres enough friction a bit of solder will give you the feeling everything's right.

          The WORST thing is the way you use that tool to cut the leads.. it's not supposed to be used like that. You can scratch the board, cut traces on the board, scrape off the solder resist with the tip of that thing... you use it flush on the board, horizontally...

            Comment

            • Koda
              Badcaps Veteran
              • Aug 2011
              • 317
              • Macedonia
              #4
              Re: Replaced some caps on an MS-7207 / K8MGN2 Board

              Definitely agree with mariushm. You need some basic soldering/desoldering skills buddy.
              Guns don't solve problems. I'll take 12

                Comment

                Previous template Next

                Related Topics

                Collapse
                • 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
                • 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
                • acedogblast
                  Guide to transplant MEC1503 EC chip and EEPROM reprogamming for T14s gen 2 and X13 gen 2
                  by acedogblast
                  This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.

                  There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as...
                  11-02-2024, 05:13 PM
                • ermals
                  Samsung UN55H8000AF - No Picture, Working Backlight, Replaced T-Con Board
                  by ermals
                  Hi all!
                  I've recently run into an issue with my Samsung UN55H8000AF LED TV displaying no image. I've done quite a bit of research in terms of what could be wrong with it. Below are the steps I've taken prior to reaching out here for some assistance:

                  1. I've tried replacing the T-Con board (BN95-01594A), twice and have still experienced the same issue with all the boards I've tested with.
                  2. I've tried to remove one side of the ribbon cable that goes from the T-Con board to the panel and still not getting any image on left or right side.
                  3. I've checked voltages...
                  08-01-2022, 10:35 AM
                • 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
                • Loading...
                • No more items.
                Working...