April 2013
M T W T F S S
« Mar   May »
1234567
891011121314
15161718192021
22232425262728
2930  

Archives

Categories

Oh damn, La cuarta parte

Today there will be a quiz.  Ready?  Look at this picture and see if you can spot the problem:

Problem with Harris SX2.5A transmitter

Problem with Harris SX2.5A transmitter

If you said “Hey, that green wire seems a little odd; it disappears behind the heat sink next to that screw then reappears again at the top,” you are correct.  What really sucks is the green wire is the transmitter off connection to the remote control.  So, when the PA board was secured to the heat sink, the wire was trapped between the board and the heat sink.  Since the components were cold, it did not pinch through the insulation right away, no.  Rather, after the transmitter ran for several hours at full power, it got hot enough to displace the wire insulation and cause a short.  Doh!  The transmitter is off and it won’t come back on!

This is a picture of the wire after it was removed:

Pinched wire

Pinched wire

Haste makes waste.  Unfortunately, it someone else’s haste that ruined my Saturday afternoon when I was supposed to be taking my son to little league practice.  I am sure that some not so kind words will be exchanged very soon.

Always double check your work.

 

Be Sociable, Share!

2 comments to Oh damn, La cuarta parte

  • Another odd thing I noticed is to the left of the green wire there appears to be another green wire burned into the ribbon cable or are my eyes playing a trick on me?

  • Paul Thurst

    Chris, that is the same wire, it wrapped around the ribbon cable. The original installation was not done too neatly. I spent some time dressing the wires so this type of thing won’t happen again.

Axiom


A pessimist sees the glass as half empty. An optimist sees the glass as half full. The engineer sees the glass as twice the size it needs to be.

Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
~1st amendment to the United States Constitution

Any society that would give up a little liberty to gain a little security will deserve neither and lose both.
~Benjamin Franklin

The individual has always had to struggle to keep from being overwhelmed by the tribe. To be your own man is hard business. If you try it, you will be lonely often, and sometimes frightened. But no price is too high to pay for the privilege of owning yourself.
~Rudyard Kipling

Everyone has the right to freedom of opinion and expression; this right includes the freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers
~Universal Declaration Of Human Rights, Article 19

...radio was discovered, and not invented, and that these frequencies and principles were always in existence long before man was aware of them. Therefore, no one owns them. They are there as free as sunlight, which is a higher frequency form of the same energy.
~Alan Weiner

Free counters!