Business Phone Systems

Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Aug 2004
Posts: 9,123
Likes: 13
Admin
*****
OP Offline
Admin
*****
Joined: Aug 2004
Posts: 9,123
Likes: 13
As these systems are aging they seem to develop the similar problem.... chattering on the boards then eventually the KSU just dies. Looks like a voltage regulator issue on the main board in the KSU. Anyone ever troubleshoot this down to the particular component that most often fails?


[Linked Image]
Atcom VoIP Demo
VoIP Demo
Joined: May 2005
Posts: 945
Member
Offline
Member
Joined: May 2005
Posts: 945
I see it mostly on the DX120's Its amazing they all seem to be going bad at the same time.



Jim Hoey

SST Communications
597 West Montauk Highway
Lindenhurst, New York 11757

631 956-0100

www.sstcom.com

Business telephone systems on Long Island and New York City like Comdial, Vertical, Avaya, Panasonic
Joined: Nov 2006
Posts: 704
Member
Offline
Member
Joined: Nov 2006
Posts: 704
I would check all the Capacitors 1st.

Joined: Aug 2004
Posts: 9,123
Likes: 13
Admin
*****
OP Offline
Admin
*****
Joined: Aug 2004
Posts: 9,123
Likes: 13
Found two swollen caps. Replaced them and it allowed the system to boot but really flakey. LEDs blinking look weak and off tempo. Will go further into the ICs to see what I can find.


[Linked Image]
Joined: Nov 2006
Posts: 704
Member
Offline
Member
Joined: Nov 2006
Posts: 704
If you haven't already check power supply output,, could be power supply is getting weak.

Joined: May 2010
Posts: 51
Member
Offline
Member
Joined: May 2010
Posts: 51
when this happens we put in a loaner for 2 weeks and they need to update to a new system. I have noticed as you have, they can drop dead a couple a week sometimes after 6-8 years. its the base layer cabinet, sometimes we just swap out the CPU and vmail with a working used base chassie and good to go.


Phone World Inc.
NE.Ohio
Joined: Aug 2004
Posts: 9,123
Likes: 13
Admin
*****
OP Offline
Admin
*****
Joined: Aug 2004
Posts: 9,123
Likes: 13
Yep. Been doing that too. Now I have a collection of bad main boards I'd like to fix if I can ever get the time to sit down and figure out which component is going south.


[Linked Image]

Link Copied to Clipboard
Forum Statistics
Forums84
Topics93,820
Posts636,739
Members49,643
Most Online5,661
May 23rd, 2018
Popular Topics(Views)
Today's Birthdays
Airdale, AnnetteLee, AnnettesDayIsUg, bigboy, Blackline, boomj, db Communications, gwh, samcorcione9111, Victor D.
Newest Members
julesm, Helen.D, AlAl, mike hurford, Nigel S
49,642 Registered Users
Top Posters(30 Days)
pvj 12
ramo 11
Toner 9
dans 5
Who's Online Now
1 members (Curlycord), 48 guests, and 20 robots.
Key: Admin, Global Mod, Mod
Contact Us | Sponsored by Atcom: Business Phone Systems | Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers.
©Copyright Sundance Communications 1998-2023
Powered by UBB.threads™ PHP Forum Software 7.7.5