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Computer PS Upgrade (Fuse/IEC/Teflon Cap)

Today I successfully installed a PCB fuse holder into my computer’s power supply. The stock fuse had leads soldered to the ends that were then soldered directly to the PCB. It took careful work with the Dremel to widen the PCB inlets to accept the fuse holder and now I can roll fuses with ease. I’ll soon order an SR Black fuse to replace the stock fuse rated at 6.3 amps/250V (5 x 20mm).

The power supply used only 1 film cap and it was rated at 1uf that was replaced with an unused Aura-T teflon cap that was sitting idle on a shelf. The power supply will help burn in the cap. Hopefully, the cap improves the sound of my generic computer which is my main source of music. There are too many teflon caps currently burning in since the acquisition of a Conrad Johnson 150SE; therefore, it will be difficult to distinguish what exactly is attributing improvements or detriments to my system but I cannot complaint at this point because my system sounds good. Today’s soundstage is more holographic than yesterday’s. Let’s see what tomorrow brings.

I noticed that the power supply’s IEC inlet is easily replaceable. It will be replaced by an Oyaide Inlet R that is currently in my modified Running Springs Audio Haley. I plan for the Haley to use the Furutech FI-06 NCF IEC or possibly purchase another Oyaide Inlet R for the computer.

Has anyone else tweaked computer electronics and what was your experience?
c_avila1
gdnrbob
2,421 posts
 
 Experimenting is what makes this "mod-it-yourself" hobby really fun. 
True.
Let us know what you find.
B
Post removed 
steakster
720 posts
 
I tweaked the 120vac/19vdc converter/power supply to my system’s laptop. Since a SR Black costs more than my used PS (c/o Ebay), I took it a step further and by-passed the fuse holder completely. There’s a circuit breaker upstream in my balanced power conditioner for emergencies.

Computer sourced music kicks a lot of digital backwash into the audio chain. If you have a laptop, listen to a track via the internal battery vs the connected PS. If a vocalist sounds ‘hard’ or ‘crispy’ when they belt it out (with the PS connected), then digititus is still present. I inserted one of these, ICT PCM-12 ADL, in-line between the laptop and PS. It helped.

c_avila1 OP
71 posts
 
Before: 
http://i64.photobucket.com/albums/h162/triggr_357/Before%20IEC.jpg
http://i64.photobucket.com/albums/h162/triggr_357/Before.jpg
http://i64.photobucket.com/albums/h162/triggr_357/Before%20IEC%20Chasis%20View.jpg

After:
http://i64.photobucket.com/albums/h162/triggr_357/NFC%20IEC.jpg
http://i64.photobucket.com/albums/h162/triggr_357/Complete.jpg
http://i64.photobucket.com/albums/h162/triggr_357/NFC%20IEC%20Chasis%20View.jpg

The project has been completed with a few changes:
  • The Furutech FI-06 NCF inlet was installed into the computer's power supply instead of the Haley power conditioner. 
  • An Audio Horizons fuse was installed instead of the SR Black fuse.
  • IEC ground wire to pcb was upgraded to 16 awg, solid core, PVC insulated, copper wire. 
  • IEC neutral wire was upgraded to 20 awg, solid core, PVC insulated, silver wire.

Am I able to hear changes or improvements as a result of this project? There is absolutely no doubt about it! This what I hear:

  1. A much blacker background
  2. Sound stage focus
  3. Improved 3 dimensional imaging
  4. More detail
  5. Smooth, much less fatiguing sound
c_avila1 OP
71 posts
 
I expected to hate the sound of the rhodium IEC but I'm surprised that the tonality didn't change.

It's possible that this project provided only 1 improvement which is the black background. The sound stage focus, improved 3D imaging, more detail, and smoother sound are by-products of the black background. 
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