With age, my Zyxel 660-HW started to be instable on all 4 LAN connections. All other functions were fine. Symptoms were: poor LAN performances and all LAN connections lost and soon reestablished every 15 seconds or so. The problem has been fixed replacing one electrolytic capacitor. Some detail at:
As all the other caps measured bad ESR value, should your Prestige expose strange behaviors, I suggest you to replace all of them. Emanuele.
Wow, thanks for that!
I have an old 660HW-61 where the switch (LAN) part started acting weird. As it was out of warranty I bought another one.
I just checked the same cap, 220µF 10V, and got an ESR reading of 1.1 ohm, which is high. The other 220µF cap just besides it reads 0.14 ohms, which should be fine.
The other two caps you indicate are also marginal, 0.65 ohms, while all others are around 0.15 ohms.
Now I just need to get some new caps. :-)
Thomas
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