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Search: Posts Made By: Wester547
Forum: Troubleshooting Power Supplies and Power Supply Design 09-20-2018, 01:57 PM
Replies: 2,959
Views: 691,330
Posted By Wester547
Re: Power supply build quality pictorial. part 2

Teapos have failed in the voltage doubler before:

https://www.badcaps.net/forum/showpost.php?p=660983&postcount=57
https://www.badcaps.net/forum/showpost.php?p=557221&postcount=4...
Forum: General Capacitor Questions & Issues 09-16-2018, 02:15 PM
Replies: 37
Views: 1,020
Posted By Wester547
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?

The three caps on the VRM input side are 1500µF 6.3V Nichicon HD (not to be confused with the failed 3300µF 6.3V Nichicon HM that are awaiting replacements, located on the VRM output side). They are...
Forum: General Capacitor Questions & Issues 09-12-2018, 12:36 PM
Replies: 8
Views: 266
Posted By Wester547
Re: Help with Sprague cap replacement

Momaka, Nichicon’s history (http://www.nichicon.co.jp/english/company/com_history.html) specifies that there was a time (September 1970 and July 1991 at least) where Nichicon and Sprague established...
Forum: General Capacitor Questions & Issues 08-31-2018, 05:27 PM
Replies: 39
Views: 1,828
Posted By Wester547
Re: Swapping japanese/generic electrolythics with solid-states

I believe the ASUS A8V model is closer to fourteen years old, possibly not even that. I’d guess the board was made around the latter half of 2004 / possibly early 2005, and those MBZ appear to use...
Forum: Major Manufacturers Boards 08-19-2018, 12:50 AM
Replies: 130
Views: 56,512
Posted By Wester547
Re: Dell Precision 470 Workstation

The Nichicon HDs in the Hipro PSU also appear fine. This is why mixing crap caps and good caps is an unwise practice. It would be interesting to diagnose why the original Delta PSU failed (as I...
Forum: General Capacitor Questions & Issues 08-11-2018, 12:16 PM
Replies: 887
Views: 373,021
Posted By Wester547
Re: The Hall of Shame - Badcaps Photo Montage

I’ve seen many Su’scon fail in LCD monitors, and bulging and leaking Su’scon aren’t a stranger to me in older Hipro PSUs. So I would not rank them much higher than Teapo/CapXon/LTEC. Elite are also...
Forum: General Capacitor Questions & Issues 08-02-2018, 07:59 PM
Replies: 887
Views: 373,021
Posted By Wester547
Re: The Hall of Shame - Badcaps Photo Montage

Those findings aren’t consistent with mine, actually.

In many GPS-350 series units, for an example (made in 2005 or thereabouts), I found that it’s always the CapXon GL on the +12V rail (or +5VSB)...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-31-2018, 01:44 PM
Replies: 19
Views: 755
Posted By Wester547
Re: iiyama PSU repair from LCD monitor [fixed]

Indeed, the high voltage mains filter cap leaking from the anodic lead in APFC circuits, both in LCD monitors and in AC adapters, is quite common. I’ve seen this happen with both Elite (Chinsan),...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-20-2018, 12:51 PM
Replies: 22
Views: 1,407
Posted By Wester547
Re: 400W PSU... is it worth trying to repair?

Between those heatsinks and the 470µF primaries, etc, I highly doubt that PSU could do 400W. More like 250W, or as the other supply expressly states, 235W. That Teapo definitely needs replacing, but...
Forum: General Capacitor Questions & Issues 07-17-2018, 02:52 PM
Replies: 10
Views: 322
Posted By Wester547
Re: Comparing ripple current on capacitors with different temperature rating

Electrolytic capacitors do have ripple current multipliers which allow them to conduct more ripple current at lower temperatures. The rather elderly but still pertinent KMG datasheet I attached (on...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2018, 11:53 AM
Replies: 14
Views: 477
Posted By Wester547
Re: EZ-Cool ATX-650JSP ATX PSU recap.

Not sure if I agree with that.

The older Panasonic FJ/FL and Rubycon MBZ/MHZ were generally very reliable capacitors, at least compared to the likes of KZG/KZJ. And Nichicon HM/HN/HZ made after...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-13-2018, 10:35 AM
Replies: 14
Views: 477
Posted By Wester547
Re: EZ-Cool ATX-650JSP ATX PSU recap.

I want to reiterate what momaka said about Chemi-con. So long as you stay away from KZG and KZJ made between 2001-2007 and TMV and TMJ from that time period, and so long as you don’t reuse certain...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-12-2018, 06:04 PM
Replies: 2,959
Views: 691,330
Posted By Wester547
Re: Power supply build quality pictorial. part 2

I wouldn’t be surprised if that power adapter was basically unused and if that CapXon LZ bulged on the shelf. While it could have definitely been used and the CapXon LZ could have outgassed due to...
Forum: Custom Tweaks, Modifications, and Revisions 07-06-2018, 10:43 PM
Replies: 24
Views: 1,092
Posted By Wester547
Re: Your Video Card Cooling Mods - PNY GeForce 8400 GS PCI (GH84W0SPUE49P)

Those 470µF 16V KZG appear to have 2009 datecodes, as with the Nichicon HN. So the KZG in question might actually be fine in the long term. The only post-2008 KZG I’ve seen bulge were subjected to...
Forum: General Capacitor Questions & Issues 06-04-2018, 08:15 PM
Replies: 46
Views: 4,231
Posted By Wester547
Re: BSOD and Gigabyte Capacitors

That’s a slight cause for concern, but nowhere near as drastic a capacitance increase as the bad datecode Nichicon HM and HN (and TK ATWY and ATWB, in my experience - Samyoung NXC too). Those KZG may...
Forum: General Capacitor Questions & Issues 06-02-2018, 10:28 PM
Replies: 46
Views: 4,231
Posted By Wester547
Re: BSOD and Gigabyte Capacitors

So KZG are prone to failing high capacitance / high leakage current in your experience, like bad Nichicon HM, HN, HZ, and Suncon WF? In my experience, most KZG (and KZJ) just go open circuit when...
Forum: Abit - Asus - Aopen 05-26-2018, 09:25 AM
Replies: 30
Views: 2,403
Posted By Wester547
Re: ASUS A7M266 Kills T-Bred B??

The early Fujitsu polymers are failure prone. Back in the day, it was initially conjectured that it was because of insufficient rubber seals allowing moisture ingress which resulted in a steady...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-24-2018, 12:08 PM
Replies: 2,959
Views: 691,330
Posted By Wester547
Re: Power supply build quality pictorial. part 2

I have some Newton Power 250Ws with only ~280µF total bulk capacitance on the input (560µF 200V x2 in series), and after unplugging the PSU, motherboard LED stays lit for about 30 seconds so that...
Forum: General Capacitor Questions & Issues 05-24-2018, 11:21 AM
Replies: 46
Views: 4,231
Posted By Wester547
Re: BSOD and Gigabyte Capacitors

Nichicon HM/HN/HZ made after 2005 should be fine. Those made before 2006 and especially before 2005 are very failure prone. Sanyo’s (Suncon) WF series is rather failure prone (so I doubt the PSU was...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-22-2018, 05:41 PM
Replies: 2,959
Views: 691,330
Posted By Wester547
Re: Power supply build quality pictorial. part 2

I think the datecode on that fan (“0525E”) actually means May of 2000 or so. Looking at this same fan model (https://www.badcaps.net/forum/attachment.php?attachmentid=10273&d=1243981170) from an old...
Forum: General Capacitor Questions & Issues 05-14-2018, 12:09 AM
Replies: 39
Views: 1,828
Posted By Wester547
Re: Swapping japanese/generic electrolythics with solid-states

Sometimes the rubber stand-off used for the bungs is crimped in such a way that it stands out “more” (I’ve seen such a rubber bung “look” on some Nichicon PWs before, yet they tested fine and haven’t...
Forum: All Others Motherboards 04-23-2018, 08:22 PM
Replies: 9
Views: 441
Posted By Wester547
Re: Dell Precision 490 Motherboard

If two of the six have bulged, the other four may not be far behind. Any capacitor can fail without symptoms, so preemptive replacement is sound.
Forum: All Others Motherboards 04-23-2018, 01:24 PM
Replies: 9
Views: 441
Posted By Wester547
Re: Dell Precision 490 Motherboard

Sanyo’s (Suncon) WF series is failure prone, especially whilst under thermal duress. It’s debatable that heat killed them, but KZJ is a known dud series too and have also failed in these toasty...
Forum: Other Devices with Bad Capacitors 04-18-2018, 12:09 AM
Replies: 35
Views: 7,521
Posted By Wester547
Re: XFX GeForce 8600 GT [PV-T84J-UDD3 V5.0] – recap information and shenanigans

I told you using Nichicon HZ and HN with 2005 datecodes was risky, didn’t I? :lolsign: Out of all your Xbox 360 stock caps, you should have gone with 2700µF 6.3V Rubycon MFZ instead (if you have any...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-03-2018, 05:59 PM
Replies: 202
Views: 19,734
Posted By Wester547
Re: FSP400-60GLN worth fixing?

The worst storage bulger by far is KZG (as far as Japanese ultra low ESR caps go), especially the 6.3V variants. KZJ comes close though (the 10mm diameter 6.3V variants), as might Sanyo/Suncon WF...
Showing results 1 to 25 of 500

 
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