On Sat, Feb 07, 2009 at 09:58:49PM -0800, Kevin Nathan wrote:
I would like to be prepared for the eventuality of the fan possibly
quitting. I therefore have a couple of questions I would like to ask the
group. First, are fans still available for these amps? If not, is there
something currently on the market which will substitute for the original?
And, since I am blind, is this something I can do myself with relative ease
or is it a long and involved process to change it out?
I can't say anything about the fan in question, but I've rebuilt many computer
fans with varying success. It depends upon what has happened to them. Some
the bearings have worn down to the point the are no longer useable, most have
had the lubricant dry out. Some have had both, when the lubricant dries out,
the bearings wear out from the friction.
While most people reading this can easily by new fans mail order, I can't. Here
in Israel, they are hard to find and most of the time mail ordering them from
the US or EU costs far more than a new power supply, if you can find one.
Since poking around in a high voltage is device is dangerous for the best of
us, I suggest you ask around on local repeaters, nets, etc, to see if
someone would be willing to remove and replace the fan for you.
You might also ask to see if someone, possibly a different ham, would
be willing to relubricate the bearings for you on the old one. While they
are at it, it would be good to vacuum out the dust and dirt if any has
accumulated in the amp and clean the fan blades.
It's not just fans, a friend of mine has a little cottage industry where he
removes the permanent bearings from appliance motors and replaces them with
a new mounting and replaceable bearings.
It helps when you ask these questions to state your general location, so that
someone reading your question might realize that you are nearby and will be
willing to offer help.
73,
Geoff.
--
Geoffrey S. Mendelson, Jerusalem, Israel [email protected] N3OWJ/4X1GM
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