Riddled TV Repair Forum
Service Menu and Manual Schematics
  		   
 FAQFAQ   SearchSearch   RegisterRegister 
   Log inLog in 
HOME          TV Repair Tips          Forums          For Sale - TV Parts          For Sale - Arcade Parts         
Sony KVM1421U sound problem    
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair
 
Author Message
tellyman



Joined: 19 Feb 2013
Posts: 2
Location: scotia
PostPosted: Tue Feb 19, 2013 2:47 pm    Post subject: Sony KVM1421U sound problem Reply with quote
Can anyone suggest a cure for a "golden oldie"?The set is a Sony KVM1421U which is being used with a PVR connected via the scart input.The problem is the sound will start to break up and come and go and eventually disappear.This will happen a couple of minutes after switch on.The sound will come back on and off at different levels.No amount of freezer and hair dryer treatment helps.Any help would be great.
Google
PostPost subject: Advertisement
kuhurdler



Joined: 28 Dec 2006
Posts: 2878
Location: Overland Park, KS
PostPosted: Wed Feb 20, 2013 1:51 pm    Post subject: Reply with quote
This sounds like the makings of a bad tuner, but you indicated it was through the SCART input. So in that case, it's probably a bad solder joint.
JTS1957



Joined: 21 Jan 2009
Posts: 2393
Location: Far, Far Away
PostPosted: Wed Feb 20, 2013 9:09 pm    Post subject: Reply with quote
If thinking AFT drift (AFT detector coil adjustment), the tuner picture would have to be affected too, but as he states its via scart.
tellyman



Joined: 19 Feb 2013
Posts: 2
Location: scotia
PostPosted: Thu Feb 21, 2013 1:20 pm    Post subject: Reply with quote
Just an update guys on the fault i have.I have eventually traced the fault to C012 a 22uf capacitor connected to Q005 base and R045 on the print side damaged because of leakage.Thanks for the interest.
Display posts from previous:   
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair All times are GMT - 6 Hours
Page 1 of 1

 


Disclaimer: All information provided by RiddledTV is strictly for information purposes only. Please observe all warnings displayed on your electronic
devices. This information should only be used to help diagnose work, and all service should be performed by a qualified technician.
Contact Us       Privacy Policy       Copyright © 2018 RiddledTV.com       Advertise on RiddedTV.com