Phone Systems


Previous Thread
Next Thread
Print Thread
Rate This Thread
#621345 - 06/21/18 11:43 AM Hum on Bogen TPU-35A  
Joined: Oct 2006
Posts: 1,093
Yoda Online content
Member
Yoda  Online Content
Member

Joined: Oct 2006
Posts: 1,093
Northeast Iowa
I have a Bogen TPU-35A that has been on the shelf for a couple of years. I thought it was working when I took it out of service. I plugged it in yesterday and hear a loud hum with my butt set on Com and 70v terminals. Nothing else is connected to it.

Is there anything serviceable inside, or is the unit most likely toast? Thank you.

Jim

Google Telephone Equipment Search
#621353 - 06/21/18 01:50 PM Re: Hum on Bogen TPU-35A [Re: Yoda]  
Joined: Mar 2007
Posts: 170
RUSS K. Offline
Member
RUSS K.  Offline
Member

Joined: Mar 2007
Posts: 170
BEAVERTOWN PA
Not sure about the hum with a butt-set, but across the 70 volt line, there may just be a lot of residual noise. I would suggest hooking a speaker up instead of the buttinsky. Use the Com and 8, now thinking that might not have an 8 ohm out, but the 25v out should be wanting to see about a 16 ohm load at 35W. Those are really reliable amps. Still being made but now a 35B. Or if you have a speaker with a 70v xformer, hook that up instead. If you still have the hum, I would suspect that one of the power supply filters has crapped out, although not a big deal to repair.


RUSS K.

Moderated by  metelcom 

Refurbished Phones & Equipment Search
Shout Box
FREE DESI Labeling System Software!
FREE DESI Labeling Software - Click Here!
Most Recent 5 Post
Mitel Superconsole 1000
by Hotelgm92. 07/23/18 01:30 AM
Installer Requested in CA
by usedphones. 07/21/18 06:11 PM
Selling - buy one buy all name your price
by usedphones. 07/20/18 09:19 PM
Panasonic KX-TA824 Software CD
by RShea. 07/20/18 08:02 PM
sts e battery
by Gary S.. 07/20/18 07:59 PM
Who's Online Now
27 registered members (newtecky, phonemeister, Mercenary Roadie, JWRacedog, justbill, Professor Shadow, Yoda, Hotelgm92, RATHER BE FISHING, pvj, ugly1, phonman123, Tip&Ring, kraneworldchamp, michaelg, TippoRingo, dude, OBT, Silversam, jknichols, srg, Ruben, Bob3470, Derrick, Touch Tone Tommy, gelehu, Justin M), 500 guests, and 676 spiders.
Key: Admin, Global Mod, Mod
Tech Support Line 1.800.766.3425
Over the Phone Tech Support for your Phones and Business Phone Systems
Popular Topics(Views)
Newest Members
YBS, telecomdirect, Frodo Baggins, beckerinsurance, MikeZim
48657 Registered Users
Forum Statistics
Forums60
Topics91,238
Posts621,265
Members48,658
Most Online5,661
May 23rd, 2018
Today's Birthdays
Amy DeBruyne, cyberdread, dtjalsm, mascalzone, Westerntel Guy
Top Posters(30 Days)
dexman 44
usbuild 16
Ruben 15
tylan 14
Derrick 13
pvj 11
Free Voip phone with every line!
FREE Voip Phone - Click Here!
RESPONSIVE WEBSITE DEVELOPMENT
Ad Spot for sale!
Free Phone Repair Diagnostic
Contact Us | Telephone System Tech Support | Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers.
©Copyright Sundance Communications 1998-2018
Website Malware Scan




Trusted Partners
Sitemap