These days it's cheaper to get a used TD ksu off ebay than to try to troubleshoot too much
Charles Patterson [email protected] Patterson Communications, Inc. Tarrytown, NY On Thu, Aug 12, 2010 at 12:53 AM, Bob Puff <[email protected]> wrote: > 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
