Slim Desk Top Power Supply Very Bad Caps

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6044
    • USA
    #1

    Slim Desk Top Power Supply Very Bad Caps

    My boss brought his computer to work and said it DEAD would not power ON
    after power outage that lasted two hour

    Took a look at the mother board and most of the caps that are 850uf and 1500uf @ 6.3 volt had pop there tops a total of ten caps

    So I thought let me look at the caps in the power supply and all of the caps that are 100uf and less to 4.7 uf where all open no ESR reading

    about 10 of them

    This is the first switch power supply that I have seen that all of the low value are open like that

    I replaced all of the caps and the main power caps as well and all of the pop caps in the power supply

    And it came back to life I ran for about 30 minutes 2 different time and it seem to work OK

    I am going to recap all of the caps on the mother board

    Do you think there is any thing I should look for after I recap all of caps

    when doing a burn in test
    Last edited by sam_sam_sam; 09-11-2012, 07:30 PM.
    Tags: None
    • sam_sam_sam
      Badcaps Legend
      • Jul 2011
      • 6044
      • USA
      #2
      Re: Slim Desk Top Power Supply Very Bad Caps

      Up-Date.........> Burn in Test

      I fix this computer and save it from the land fill

      I also replaced the power supply fan

      This was bad would not run this was the cause of all of low uf value caps to be open they where all COOKED to death
      The brand of these caps I have not seen before the system fan for the CPU chip

      This computer was left ON from about 5 pm yesterday to 6 am today and was still working

      I ran a virus program that was on this computer and while I was running it the
      CPU system fan speed up and slow down and every thing seem to work the way it should
      Last edited by sam_sam_sam; 09-26-2012, 05:26 PM.

        Comment

        • OniJon
          Computer Expert
          • Jun 2012
          • 82
          • Finland
          #3
          Re: Slim Desk Top Power Supply Very Bad Caps

          Very good!

          I'd like to repair stuff like that too, but here in Finland everybody's just "ahh, it's scrap, throw it out"

            Comment

            • sam_sam_sam
              Badcaps Legend
              • Jul 2011
              • 6044
              • USA
              #4
              Re: Slim Desk Top Power Supply Very Bad Caps

              Originally posted by OniJon
              Very good!

              I'd like to repair stuff like that too, but here in Finland everybody's just "ahh, it's scrap, throw it out"
              Here in the USA there are alot of people that feel the same way

                Comment

                • OniJon
                  Computer Expert
                  • Jun 2012
                  • 82
                  • Finland
                  #5
                  Re: Slim Desk Top Power Supply Very Bad Caps

                  Originally posted by sam_sam_sam
                  Here in the USA there are alot of people that feel the same way
                  Yea, it's stupid. You can have the good old machine back for less money and hazzle than buying a new shitty one.

                    Comment

                    • Khron
                      Badcaps Legend
                      • Sep 2006
                      • 1350
                      • Finland
                      #6
                      Re: Slim Desk Top Power Supply Very Bad Caps

                      Originally posted by OniJon
                      Very good!

                      I'd like to repair stuff like that too, but here in Finland everybody's just "ahh, it's scrap, throw it out"

                      Too true.....

                      And not fair!
                      Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

                        Comment

                        Previous template Next

                        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...
                          ORIGINAL POWER SUPPLY BOARD
                          7 Photos
                          11-22-2024, 01:46 PM
                        • sam_sam_sam
                          Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
                          by sam_sam_sam
                          I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

                          One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
                          03-31-2024, 02:12 PM
                        • eryjus
                          Heathkit IO-4205 Power Supply Caps
                          by eryjus
                          Hello,

                          First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.

                          I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.

                          I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
                          ...
                          05-10-2023, 11:21 AM
                        • captain150
                          Help with switching power supply caps
                          by captain150
                          I'm trying to repair two old VCRs, they both have bad caps. One has leaky ones, the other would barely run until I subbed in some caps from another power supply I had laying around (though they are the wrong values). This vcr works for an hour or two, but then the power supply starts whining and the picture gets lines in it. I didn't replace all the secondary caps, so another voltage might still be problematic, or the values I used are too far off.
                          I've been on mouser and digikey but the options are a bit overwhelming. I just need some new ones that will work. They don't need to be top quality,...
                          03-16-2025, 07:34 PM
                        • sam_sam_sam
                          Modification to a ZD-987 desoldering/soldering station using a external switching power supply
                          by sam_sam_sam
                          I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails

                          I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time...
                          07-01-2024, 06:34 AM
                        • Loading...
                        • No more items.
                        Working...