Not strictly a motherboard, but a PSU!

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Azurael
    Member
    • May 2007
    • 25

    #1

    Not strictly a motherboard, but a PSU!

    Hi, first post here so I'm sorry if I got it all wrong!

    I know trodas already from the OCW Forums, where I'm known as RayvenX

    Anyhow, the subject of my post is a somewhat unfortunate PSU, a GTR 450W-Li. I've not heard of the brand before, my friend from Hong Kong brought it back to the UK for me, but it has 30A on a single 12v rail and is very stable, even under high loads so I don't want to throw it away (although the bright colour scheme and half-transparent housing is a bit 'bling' for my liking)...

    I looked in the top of it, having become somewhat more aware of the issues with caps in computer components and noticed it's full of bright yellow Fuhjyyus I'll be contacting Big Pope with regard to getting some replacement Samxons, but it's a bit hard to work out all of all the caps, so some advance de-soldering will probably be required.

    I've got some pics of the PSU in question (with bright yellow caps, no idea what the big ones are?) on my Picasa album here:
    http://picasaweb.google.co.uk/lainazurael/GTR450WLiPSU

    This one concerns me a little because while none of the caps have bulged, the crusty substance on the top of the cap in focus here and the one in font definitely doesn't match the glue used elsewhere in the PSU:


    Anyway, enough of this rant Suffices to say I've stopped using the PSU in question until I've got replacements in there!
  • ifrythings
    Member
    • Apr 2006
    • 19

    #2
    Re: Not strictly a motherboard, but a PSU!

    Ultra X connect uses this same board and same with some Acer Power units I've seen, there not that hard to do, but becarful cause the 5V and ground traces are somewhat close together (briding is easy).

    P.S there are two caps on the 12V rail, one is a 16V 470uf that is "standing" on top of a small coil and then the big one on the board, the 16V 470uF should be change with a larger value. I have put in 16V 2200uF cap in it's place with no problem and the output is quite a bit cleaner.

    Comment

    • hardwareguy
      Badcaps Veteran
      • Jun 2006
      • 405
      • USA

      #3
      Re: Not strictly a motherboard, but a PSU!

      YECH! Get ALL those damn Fuhjyyu caps out of there!

      Comment

      • 999999999
        Badcaps Veteran
        • Sep 2006
        • 774
        • USA

        #4
        Re: Not strictly a motherboard, but a PSU!

        I suspect the crustiness is dried up flux, that they just weren't rinsed very well after soldering. I might be wrong but without enough pressure to bend the top it is unusual for there to be a leak on top unless it was just outright defective cap manufacturing (flaw in the metal or stamped too deep).

        Comment

        Related Topics

        Collapse

        • glovecaps
          Asus ROG Strix Scar G533qm with a G733qm Motherboard, can I modify the Bios to accept G533 Bios
          by glovecaps
          Hello,

          I have a Asus ROG Strix Scar 15 (G533QM) that had a dead motherboard (Graphics card dead) and after trying to fix the motherboard with no success, I bit the bullet on a sale for a new motherboard. I ordered a motherboard for the 15 inch model which is the one that I have, and when the motherboard arrived it wasn't for a little while that I saw it was from the 17 inch model.

          My question is, can I update the Bios on this G733 motherboard to a G533 Bios.

          The reason for wanting to do this is that the keyboard isn't working as it should, and I think this...
          11-25-2024, 04:23 PM
        • Docus
          Legion Y540 17irh motherboard issue ( need help to know how to diagnose my motherboard)
          by Docus
          Hi everyone 😀,

          I'm here today to ask for help with repairing the motherboard of a Lenovo Legion Y540 17IRH.

          To give you some context, I'm passionate about computer repair so much so that I've invested in a lot of tools and started practicing on dead and old hardware. I've been learning how to solder and desolder components, mostly focusing on phone repairs.

          Recently, I bought a broken Lenovo Legion Y540 17IRH for just €150, and there are two main reasons why I made this purchase:
          1. I already own the exact same model, but its plastic chassis is badly damaged.
          ...
          06-10-2025, 04:24 PM
        • Archimedes
          HP Envy 17-3290NR 3D Blank Screen - motherboard Louis V1.1 6050A2489901
          by Archimedes
          Subject is a blank screen issue in HP Envy 17-3290NR 3D version laptop with motherboard Louis V1.1 6050A2489901 MB-A02. Production year is 2012. This one is a 2nd hand motherboard which I could use it for few months only. Suddenly no output from the internal display and also no signal from HDMI port then Windows out of order after few boots.

          Caps lock working normally and no HP's caps-lock warning blinks. Making a hard reset and replacing the RAM sticks or using different slots didn't help.

          Fans are spinning. Blindly could install windows11 and got the device manager...
          07-30-2024, 05:14 PM
        • dragon3x
          After updating motherboard capacitors, what to do next (Asrock K7VT2, SOLTEK SL-75FRN2L)
          by dragon3x
          Hi, I have some 32 bits computer motherboards that need repair, as they fail to
          power on.

          Here are some examples :

          (N.B. "capacitors" indicated here are electrolytic capacitors located in the onboard
          switching supply area).
          (N.B. #2 : I could not find a 3300 microF aluminum-polymer with a higher voltage
          than 6.3 V.)

          1 - Motherboard #1 : this is an Asrock K7VT2 (socket A) that still works well. To put it on test
          I replaced capacitors with aluminum-polymer.
          3300 microF/6.3 V. x 4 replaced by 3300 microF/6.3 V. (KYOCERA...
          03-21-2025, 02:46 PM
        • dhenion
          Asus VivoBook F510UA-AH51 won't run on battery after motherboard replacement
          by dhenion
          I'm working on my sister's laptop: Asus VivoBook F510UA-AH51 - The motherboard died so I replaced it.

          The original board was:
          ASUS X510UNR REV 3.0 A

          The replacement board is:
          ASUS X510UNR REV 3.0 B (identical except B vs A - I couldn't find an A board anywhere. Visually they are identical.)

          It boots right up on the replaced motherboard and everything works fine on the new motherboard - but it won't run off battery. When I disconnect the charger it immediately dies. When I plug it back in and reboot the system - it still shows the battery at...
          01-30-2024, 01:45 PM
        • Loading...
        • No more items.
        Working...