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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Dear Richard,<br>
<br>
This is a resend because the hackerspace mailer would not<br>
accept the original with pictures left in! Serves me right for<br>
being lazy.<br>
<br>
If you look at the LEDs you will notice a slight "flat" on the rim.<br>
This marks the negative side. Also, in general (but not always)<br>
the "cup" inside the LED is negative.<br>
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<img src=" " class="csimg csimgbg sprites-insertorderedlist-png" alt="Numbering" title="Numbering"></div>
<br>
I am not convinced that the LEDs are failing. Take one out<br>
experimentally and connect via 330 Ohms (ish) to a 5V supply.<br>
If the LED lights, your problem may be elsewhere, e.g. driver<br>
transistors. If the globe is battery powered, look out for signs<br>
of corrosion, e.g. the dreaded negative lead rot.<br>
<br>
Good luck!<br>
<br>
Timothy Davies
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