electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
denon udra-77

 
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs
View previous topic :: View next topic  
Author Message
Rico UK
Guest





PostPosted: Wed Nov 12, 2008 6:59 pm    Post subject: denon udra-77 Reply with quote

Hello, I have a lovely old denon dr77 which for no reason has stopped outputting any sound , all else seems to work. I have noticed the relay does not click any more. Any ideas or access to a service manual would be very helpful thanks

Rico
Back to top
z3ratul



Joined: 03 Jul 2008
Posts: 14

PostPosted: Fri Nov 14, 2008 9:11 am    Post subject: Re: denon udra-77 Reply with quote

Rico UK wrote:
Hello, I have a lovely old denon dr77 which for no reason has stopped outputting any sound , all else seems to work. I have noticed the relay does not click any more. Any ideas or access to a service manual would be very helpful thanks

Rico


the only thing u can do 2 this is to try to format the device ....
Back to top
View user's profile Send private message
rico2_uk
Guest





PostPosted: Wed Nov 26, 2008 4:34 pm    Post subject: Re: denon udra-77 Reply with quote

Hi
In case anyone else has this problem with other similar mini systems from Denon, I fixed the problem by replacing a faulty transistor (dtc114es) located near the speaker isolating relay The fault was identified by using a very old avo in circuit transistor tester

No idea why this transistor would fail - but there you go!

Still trying to find a service manual tho' so any input would be appreciated

Rico Very Happy
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Electronic equipment repair and service manual search discussion Forum Index -> Equipment Repairs All times are GMT
Page 1 of 1

 
Jump to:  
You can post new topics in this forum
You can 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


Електроника София - Service Manuals Free Download - Prikachi - Service Diagrams

Free TV Schematics Download - HARDW.net - Pinout Master - Jabse Search - Jabse.InK  - Pulsator

Connector Pinout Forum - Новини - SnimkiOt.com - безплатен DNS - Whois разузнаване - Poblizo.com : пътешествия