electronics, repairs, service manuals and datasheets discussion community for the repairs professionals and technicians
FAQSearchMembersGroupsRegisterProfilePM'sLogin/Out
Pioneer VSX-D1S problem

 
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
techboy1000



Joined: 07 Sep 2010
Posts: 11

PostPosted: Wed Sep 08, 2010 6:27 pm    Post subject: Pioneer VSX-D1S problem Reply with quote

I have an old Pioneer VSX-D1S A/V Receiver which I love, but one day the speaker relays that disconnect the speakers at power-up refused to reconnect.

This is so frustrating because otherwise the unit works perfectly, but without sound it's useless. Could someone point me in the right direction for where to look inside the receiver? I think I know which relay is not working, but I'm not sure if it's the relay or other circuitry controlling it. It's also almost impossible to get at.

I have the service manual for it but I would need a plotter to print it out.

Any help would be much appreciated.
Back to top
View user's profile Send private message
jts1957



Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away

PostPosted: Wed Sep 08, 2010 11:16 pm    Post subject: Reply with quote

Either the speaker relay drive circuitry has a fault or the speaker relay is doing one of its jobs and NOT letting the speakers connect because a speaker would have a DC voltage applied to it due to a defective left (or right) channel fault.
_________________
You're over there, I'm over here.
Back to top
View user's profile Send private message
techboy1000



Joined: 07 Sep 2010
Posts: 11

PostPosted: Thu Sep 09, 2010 7:06 am    Post subject: Reply with quote

jts1957 wrote:
Either the speaker relay drive circuitry has a fault or the speaker relay is doing one of its jobs and NOT letting the speakers connect because a speaker would have a DC voltage applied to it due to a defective left (or right) channel fault.


How would I go about checking that?
Back to top
View user's profile Send private message
jts1957



Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away

PostPosted: Thu Sep 09, 2010 2:35 pm    Post subject: Reply with quote

Check for a DC voltage on any of the four contact terminals {~} (NOT coil of relay terminals{.}). Anything more than a volt, you have a problem with that channel.
~---~
~---~

.-----.
_________________
You're over there, I'm over here.
Back to top
View user's profile Send private message
techboy1000



Joined: 07 Sep 2010
Posts: 11

PostPosted: Thu Sep 09, 2010 4:32 pm    Post subject: Reply with quote

Thanks. I'll try that and get back to you with my findings.
Back to top
View user's profile Send private message
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


eServiceInfo on FB - Service Manuals Free Download - Service Diagrams

Free TV Schematics Download - HARDW.net - Pinout Master - Jabse Service Manual Search - Jabse.InK  - onTap.bg

SnimkiOt.com - Poblizo.com : пътешествия