Ibm 300pl

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • ribcage
    Member
    • Sep 2020
    • 45
    • Earth
    #1

    Ibm 300pl

    Hey, I found this old IBM PC 300PL. It has intermittent problems when running, I would like to know what you think about these three Chhsi caps? I'm attaching a picture, and sorry for the abysmal quality.

    They say:
    560uF 25V, WG(M), -40 +105 'C, 9846 (I assume 46th week of 1998)

    I found two separate pictures on the internet of these three caps ruptured on this exact board. Except in both pictures they say 9936. And mine look intact.

    But I had unpredictable problems. Sometimes it boots, other times it doesn't. The very first time I started the machine, all the fans and power LED were pulsing in unison, going in and out every second. Managed to install an OS but then had crashes and now I have video artifacts.
    Attached Files
    Tags: None
    • Dan81
      SNES-powered
      • Oct 2013
      • 1866
      • Romania
      #2
      Re: Ibm 300pl

      CHHSI are abysmal craptacular caps. Replace EVERY Chhsi cap in there, even if none show any visual signs of failure.
      Main rig:
      Gigabyte B75M-D3H
      Core i5-3470 3.60GHz
      Gigabyte Geforce GTX650 1GB GDDR5
      16GB DDR3-1600
      Samsung SH-224AB DVD-RW
      FSP Bluestorm II 500W (recapped)
      120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
      Delux MG760 case

        Comment

        • ribcage
          Member
          • Sep 2020
          • 45
          • Earth
          #3
          Re: Ibm 300pl

          I replaced them but nothing changed. Although I don't have any equipment to test them. I guess Chhsi were subject to the capacitor plague in 1999.

          I think the issue was the power supply I initially used, some kind of Hero Ichi brand. It probably damaged one of the two video ram chips soldered on the motherboard. I found a very similar AGP card and it works fine but I still want to fix the on board graphics. The artifacts are always the same, garbled BIOS, weird lines everywhere in Windows. Also while in BIOS, the screen seems to be "rolling" or flickering as if I was using a CRT. But that doesn't happen in Windows. I wonder if that could be a crystal oscillator?

            Comment

            Previous template Next

            Related Topics

            Collapse
            • N3Star
              Retro 8800 GTX from EVGA artifacts
              by N3Star
              Hello,
              I need help identyfing what is broken on this GPU - GPU core or VRAM. Let's start with what I did and know so far:
              - disassembled, added missing SMD capacitors from same GPU
              -(If anybody knows what Q518 is and would share this information I would be very grateful)
              - artifacts during Windows booting are blue vertical stripes, I can take a photo if that would help
              - artifacts in Windows are yellow-ish horizontal lines
              - in BIOS/ text on black screen text gets extremely garbled
              - GPU-Z doesn't show GPU or VRAM frequency
              - GPU error 43...
              06-14-2022, 03:45 AM
            • klugec
              KVA2 RTX 2060 Super 8GB Desktop artifacts
              by klugec
              Hello (sorry for my bad English),

              I have a strange problem with my KVA2 RTX 2060 Super. As soon as Windows 11 is loaded, artifacts appear. Now the crazy thing: When I start Furmark the artifacts are gone and Furmark runs great without crashing. Mats test shows me no errors (PASS). Drivers can also be loaded without any problems.


              Mods shows me the following error:

              Code:
              MODS start: Thu Feb  1 19:16:00 2024

Command Line : gputest.js -oqa -old_gold -test 94 -dramclk_percent 100 -ignore_fatal_errors -run_on_error -fan_speed 70 -matsinfo
              ...
              02-01-2024, 10:58 PM
            • skwarszczow
              Macbook Pro A2141 020-01700-A GPU Artifacts then no S5 rails
              by skwarszczow
              Hello everyone,

              This is my first post on the forum

              I recently purchased a MacBook A2141 from a colleague at work, which had issues with the dedicated GPU. The system occasionally displayed artifacts on the screen and sometimes experienced kernel panics related to the GPU. Interestingly, applying pressure to the VRAM module would temporarily resolve the artifact issues, which made me optimistic about the ease of repair.

              Board: 020-01700, Config: Intel i7, 512GB SSD, 16GB Ram.



              Before completing the purchase, we decided to erase...
              03-23-2025, 06:04 PM
            • rattlesnake
              AT PSU produces video artifacts
              by rattlesnake
              I recently put together a retro build that uses a particular AT PSU that fits in this case (LPX).

              The model is HPN-100. I'm attaching pictures.

              The issue is that after a few seconds of being on, I start to get strange artifacts. The image looks wavy. First it's fine and then it starts to pick up. After about 60 seconds it looks like this:




              Does anybody know what kind of failure this is?

              Can the caps be faulty? Which ones should I put more emphasis on?
              What's the potentiometer for? What else should I check?
              ...
              11 Photos
              08-19-2024, 11:11 PM
            • momaka
              Artifacts from GPU Not Always a GPU Chip Fault
              by momaka
              Probably anyone who has repaired video cards before already knows this: video artifacts are not always caused by a bad GPU chip. I myself usually try not to assume this either. But with many modern GPUs, it seems that’s the case most of the time.

              Well, not in today’s post here. Although the GPU I’m about to show is not exactly “modern” anymore, it is still fairly relevant in terms of hardware design to modern GPUs. The video card I have is a Gigabyte Radeon HD6850 with 1 GB of gDDR5 RAM. Pictures of the video card, just for reference:
              ...
              12-14-2019, 07:19 PM
            • Loading...
            • No more items.
            Working...