I've got a KX-TD816 that does that... Eventually it locks up, so I know its a logic board. Not sure if its the CPU or the line interface part. It was very frustrating to figure out, and I just ended up swapping it out with another KSU.
The noise you're hearing is digital junk generated within the box. Bob ---------- Original Message ----------- From: Charles Patterson <[email protected]> To: [email protected] Sent: Thu, 12 Aug 2010 00:41:03 -0400 Subject: Re: KX-T: static on KX-TD816 > I keep forgetting to hit "Reply All" for this list too (Jim, can you > change the settings for that? so replies can go to the group?) > > I'll assume that it really is happening on multiple phones and not > just on one (Jim said he was on site testing with a butt set). > My thoughts go to > a) external interference- something near the ksu causing incredible > rf noise- or a nearby radio station type thing b) something messed > up inside the phone system- if it is happening ext to ext it could > be the ext circuit card. > > Substitution seems like a good troubleshooting technique... if you > have the right spare parts. Try a different ksu or at least stick an > ext expansion card on it and see if those exts also have the same > problem (let me know if you need one of those, I got a bunch). > > Somewhere in the back of my memory I seem to recall a problem like > that,but I'll probably have to sleep on it. > > Charles > > Charles Patterson > [email protected] > Patterson Communications, Inc. > Tarrytown, NY > > On Wed, Aug 11, 2010 at 8:52 PM, Larry <[email protected]> wrote: > > Forgot to copy the group, might help someone someday. > > > > It's possible for a digital set to have a bad buzz saw noise then in > > speakerphone if the shield can on the microphone becomes disconnected from > > the ground wire to the circuit board. The aluminum can is crimped to the > > small terminal board and picks up ground from the board trace under the > > crimp. The glue they applied over the solder joint prys open the crimp and > > RF gets into the amplifiers. Carefully remove all the glue from the board > > and the can makes contact again, noise stops. > > > > It is generally just one phone, but the client blows it up to a general > > everything is broke ;-) If it really is on everything, make sure the ksu > > has a good ground. Troubleshoot where the noise is coming from. One thing > > at a time. > > > > -l > > > > > > Jim Gottlieb wrote: > >> > >> I've got a KX-TD816 fully equipped and the customer started reporting > >> static on outside calls. I'm on site now and my hope that it was a telco > >> problem has been dashed. > >> > >> The loud static seems to come and go on nearly any analog connection. > >> Digital sets only get it when connected to analog lines (most sets are > >> digital, hence the initial report), but analog sets can get it at any > >> time. > >> On analog stations, sometimes you pick up and hear only static for several > >> seconds, then it goes away and you get internal dial tone. Then the > >> static > >> may return. It doesn't seem to be isolated to any particular card, > >> station, or line. > >> > >> While hearing the really bad static on a phone on an outside line, I > >> listened to that line on a butt set, and it was clean. Only the internal > >> user is hearing the static. > >> > >> Any ideas? > >> > >> Thanks... > > > > > > _________________________________________________________________ > > KX-T Mailing list --- http://kxthelp.com/ > > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt > > > > _________________________________________________________________ > KX-T Mailing list --- http://kxthelp.com/ > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt ------- End of Original Message ------- _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
