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Default laptop power fault: compaq presario C300EA

On Feb 19, 4:10*pm, Jerry Peters wrote:
In sci.electronics.repair Conor wrote:

In article 39, bz
says...


wrote in news:f8d97d59-d8dc-4594-8cd4-
:


http://img242.imageshack.us/img242/5075/topsmfz3.jpg


Two light tan, near left bottom corner, ~1/4 distance to top edge and ~1/8
distance to right edge, with brown polarity bands, opposite polarity, bands
out.


Without part numbers, it's meaningless.


I see at least 3 on the bottom view, one near the top edge center and two
near the bottom edge center, partially hidden by a wiring bundle.


Any cap over 10 uF will probably be electrolytic.


Wrong.


Any cap over .1 uF or so will probably be an electro.

* * * * Jerry


No. You can easily see on cap manufacturer datasheets that almost all
chip caps are not electrolytic, and even ceramics now go up to 20uF.
The chip tantalum, niobium, and other solid polymer caps you'll often
find in laptops typically go up to about 470uF, there have been great
strides in the past few years in this respect.