19 Nov
2002
19 Nov
'02
10:34 p.m.
On Wed, 20 Nov 2002, Tony Duell wrote:
I have a working VLC here that I can refer to for component information if
there is anything specific you need to know. The board itself is a 7 layer
board, so it wouldn't be easy to draft a schematic of the 3.3V regulator
and comparator section of the board. I can try taking a digital photo of
that area of the board if that would be helpful.
-Toth
How will I
know what values to shop for for the capacitor (maybe not
so critical?) and the resistor? Is there a catalog of 1992 or so
surface-mount
The capacitor will normally have the value marked on it. Either as
something like '10u' or as a 3 digit number like '226'. The latter you
read like a resistor code (22*10^6 in this case) and the base unit is
_pF_. So 226 is 22uF, etc.
I would be suprised if a resistor had failed, so leave that for the
moment. If you can't decode the markings on it, then perhaps you can
desolder it and measure the resistance out of circuit. Yes, I know it's
faulty, but it works some of the time so you shuld be able to get an
idea of the correct value.