atcomsystems.ca/forum Forums TDM Business Telephone Systems Vodavi Telephones & Systems STSe No Sync

I have a customer whom I sold andinstalled an STSe system for a few years ago. They left tonight and phones were working fine. An employee went back a few hours later to grab something and the phones said no sync. I arrived and power cycled the system which did not alleviate the problem. Displays on all phones say no sync. Any suggestions or ideas?

Might be a memory battery issue. Try defaulting the unit.

Memory battery has correct voltage. I did have to default the system and reprogram. Unit is attatched to UPS. Any ideas what could have caused this?

This is quite common and I've had to do what you did many times. When you checked the memory battery, was the system powered up? The reason that I ask this is because you may have been reading the charge voltage, not the voltage of the battery itself.

The only solution that I've found for this is to replace the KSU with one that has a known good battery.

yes it was powered up. The system in not quite 2 years old. So for a bad battery you have found the only solution to be replacing the KSU? Can a person solder on a new battery themselves? Thats quite an issue and expense for a less than 2 yr old system to have to replace the KSU because of a bad battery.

I've never done it but I have seen posts where others have. In your case, it might not necessarily be a bad battery, but the only way to accurately test it is to power the system down to measure the battery's voltage. Of course, you'll probably lose your programming again if it is bad.

You can test the battery with the system running. Just turn the battery switch off first.

It isn't hard to solder on a new one..I have done it many times. You twist the old one back and forth until it breaks off then you solder on a battery with long terminals on the end that you cut to size. Apply a bead of solder to the termial wire...then touch the point on the motherboard for just a second util the solder melts and that's it. Then turn the battery back on, reinitialize the system set time and date, power off and turn it on again. Phones should come up with the date unchanged.

Starting in late spring and into summer, I go through many batteries. If I am on site, I usually try to leave as much of the old leads as possible and tin everything. One hole is notorious for either not wanting to give up the old lead or to receive a new one.

But in my shop I have a solder sucker so I remove the battery completely. Even then I may solder in a tinned piece of x-connect when the new lead won't go in.