 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
armin(at)jarin.de
Guest
|
 Posted: Fri May 23, 2008 1:12 am Post subject: Intercom not working |
 |
|
Hi,
I'm having problems with my russian intercom in my Yak52.
Since a while, it fails to work for a while, sometimes just for a portion of
a flight, sometimes for several flights in a row , then again working for
months without failure. There is no fading in or out. It quits or comes back
completely. Tryed with different headsets, no help. Switching and changing
volume at the two selector panels no help either. There is nothing hearable,
neither in front nor in the rear.
Found that the VHF doesn't work without the intercom selected on too. No
sidetone then, and also no change in electrical load when pushing the
VHF-ptt. With both switches on, VHF works ok.
The SPU-9 box (intercom) has power and ground, same goes for the acoustic
warning board. As far as I could find associated points in the wiring
diagram, the cables are fine from connector to connector.
Am I missing something simple like a fuse or switch?
Any comments welcome!
Armin
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
|
|
| Back to top |
|
 |
dsavarese(at)elmore.rr.co
Guest
|
| Posted: Fri May 23, 2008 3:20 am Post subject: Intercom not working |
|
|
Armin,
It sounds like you have done your homework on the problem. All audio,
including the VHF radio and ADF (normally removed) goes through the
amplifier box which as you know is under the glare shield between the two
cockpits mounted on the left side looking at it from the rear cockpit. Most
likely you have a flakey amplifier box. Finding a schematic for it may be
difficult and then even if you were able to troubleshoot the unit down to
the component level, finding a replacement for the faulty component may be
difficult to say the least.
I can find out what the repair costs will be through Termikas and see if
they have one on the shelf that they would swap with you for the repair cost
plus core charge until your unit is returned to them. Let me know if you'd
like me to do this.
Dennis
---
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
