|
|
|
|
Joined: Oct 2006
Posts: 1,417 Likes: 7
Member
|
|
Member
Joined: Oct 2006
Posts: 1,417 Likes: 7 |
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
|
|
|
Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.
|
|
|
|
Joined: Mar 2007
Posts: 179
Member
|
|
Member
Joined: Mar 2007
Posts: 179 |
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.
|
|
|
|
Forums84
Topics94,564
Posts640,173
Members49,868
| |
Most Online5,661
May 23rd, 2018
|
|
|
0 members (),
13
guests, and
96
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
|
|
