A few months ago I bought myself a bargain net6501 off ebay to be used as home router. It was working flawlessly with OPNsense, but at some point after a reboot it was stuck with the infamous RLOD this list knows very well. The symptoms were the classical ones for bad capacitors:
- random failure to reach POST; - works by retrying several times; - works after several hours unplugged; - degenerative problem. To a visual inspection all the caps appeared in good conditions, nevertheless I bought a full set of caps (the electrolytic ones, included the "solid state" polymer electrolytics). Yesterday night I began to replace them, starting from the usual suspects: the two 35V 150uF electrolytics between the inductors, near the power connector. After replacing them I tested the board and, guess what, now it never fails to boot. Fixed! The capacitance of the two caps I removed is about 155uF, so well within the specs. They probably dried out and the ESR rose. This is the exact model I bought: http://deb.li/DXm1 Note the very long working life (7000 hours, quite long for this type of component). It is probably possible to replace them with better polymeric e-caps, but I chose to buy components as similar as possible to the original ones. If you experiment, let me know. Replacing those caps is not difficult, but the solder is the classical lead-free, high melting point you find on RoHS hardware. I you have dead net6501s around, I think it's worth trying. I you are not going to try, please send them to me :) Good luck! Paride _______________________________________________ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
