Re: more on ACT CR230 repeater failure

[Tickerguy <865b5cd0025b5446449bdb269b2b3602_5846@xxxxxxxxxxx>]

replying to Marc F Hult, Tickerguy wrote:
Anyone happen have the zener specs on the 6201?  I happen to have one here
with a nicely-burnt board, it appears the solder job and traces held but I'll
lay odds that the zener is open considering that it is not only no longer
amplifying it also occasionally likes to spam the original signal back on the
incoming phase forever!

> MFHult wrote:
>
>
>
> On 10 Oct 2005 22:56:52 GMT, ddl@danlan.*com (Dan Lanciani) wrote in
> message
> <1331627@xxxxxxxxxxxxxxxxxxx>:
>
> >On closer examination it turns out that both pads of the zener had
> >separated from the board (a good trick considering that one of them
> is part
> >of a little ground plane).  The trace that supplies power to the
> drivers is
> >routed through the zener\'s pad, so it\'s difficult to determine
> what
> >happened.  Depending on the order of pad failure the drivers could
> have
> >seen no voltage, high voltage, or anything in between.  There is a
> 50V
> >electrolytic across the output which might break down and limit the
> voltage
> >a bit.  Based on my initial measurements (but after I had probably
> >disturbed the board) I\'m leaning towards no voltage.
> >
>
> Is this a 1 watt 1n47xx ?  I have an ACT CR225 also and considering
> preemptively replacing with a higher wattage zener.
>
> Ironically, the Leviton 6201 that the ACT CR230 replaces in my system
> (via a
> detour with the factory-supplied Leviton HCA02-10E when the 6201 failed
> )
> also had darkening around the zener.
>
> www.econtrol.org/x10/CR230_CM11as.htm
>
> Leviton didn\'t bother to specify positioning the zener away from the
> board
> so as to increase dissipation and reduce heating of the board although
> numerous _other_ discrete components were sloppily inserted and not snug
> against the board.
>
> .... Marc
> Marc_F_Hult
> www.ECOntrol.org
>
>
>


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