> > > Buggered wrote: > > > > > > I have 2 LG systems. Control board in one has fried twice to > > > power hits. Other than that they have been great. It’s my > > > understanding that Mitsubishi is the best, whatever that
> > Curley wrote: > > > > Wouldn't it make sense to put some form of surge suppressor on > > the line to the control board? > Craig wrote > > Yes, but those are harder to find and specify ... I don't know enough about the system, but it sounds like there are two pieces and the fried controller is connected to the distant part? This gets into "network system TVS". When two or more items are connected to power _and_ connected to each other there is opportunity for trouble in any transient event, especially to the points where the two are connected together. I would make _sure_ the two parts are getting power from the same panel. And be sure there is only one ground bond point for the two of them. And be sure the ground isn't compromised but is connected ONLY to the building ground rod. This will eliminate a vast majority of the potential problems from a transient. Next I would put over voltage protections. Gas tubes are really sturdy, but kinda slow. Diodes are fast, but not so rugged. I would put in both. I suspect there isn't a pre-made TVS for that control line, but if the voltage of the controls signals is known, then suitable gas tubes and diodes can be added. So if it is a 5 volt control signal, clamping at 12 V is probably about right. If it is ethernet, including POE, but not HD-BaseT, an L-Com ELP-CAT6 will do nicely. Gas tube and diode protection between each pair and to ground. <http://www.l-com.com/surge-protector-economy-in-line-10-100-1000-base-t-cat6-lightning-surge-protector> L-Com may make something suitable. http://www.l-com.com/surge-protector-ac-dc-control-line-protectors _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
