[time-nuts] 5070B once more.... (actually electrolytics)

[John Miles]

I just had a set of 3 paralleled electrolytics more or less explode on an
nVidia video card.  Some further poking around, however, revealed that they
were damaged due to a drain-source short in the buck regulator they were
supposed to filter.  The three 5V caps ended up with 12V across them.  So it
isn't *always* the electrolytics that are to blame!

-- john, KE5FX

> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of g4fre at g4fre.com
> Sent: Saturday, May 23, 2009 6:30 AM
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] 5070B once more.... (actually electrolytics)
>
>
> I just got hit by this issue in my Dell GX270. Its the one i use for HPIB
> instruments/Heather. The video output disappeared. Doing a web search i
> found lots of posts on they used faulty capacitors. They didnt do
> a recall
> as it would lead to "bad customer perception of Dells quality" (they had
> just done a battery recall).
>
> Upon examination 2 had "bulged" You can get kits to replace all 18
> electrolytics. It may explain why there are a lot of
> gx260/270/280 unsold on
> ebay recently
>
> Dave
>
>
>