Question about Sony TA-N9000ES 5-Channel Amplifier
The amp. was in repairs twice already, always coming back working, but lasted only for couple of weeks. The first time it burned my left speaker. For some reason the protector IC (uPC1237 - never replaced) did not cut off the speaker outputs. The second time it just stopped working. My front speakers are B&W 605 S2 with active subs. I measured pin voltages on the IC and there was 23VDC on 2nd pin (output offset detector). I traced the voltage back a bit but could not determine its cause - stopped playing with electronics 12 years ago. I have the service manual plus all ICs data and application sheets but they are not much help as there are no clear fault tracking algorithms.
Check windings on input and output of main power transformer.
Make shure no open windings.
Posted on Nov 03, 2007
Tips for a great answer:
May 24, 2017 | Samsung Televison & Video
Aug 14, 2015 | Pioneer PureVision PDP-503HDE 50 in....
Aug 04, 2012 | Sony KDS-R60XBR2 Television
Apr 17, 2011 | Computers & Internet
Feb 16, 2010 | Panasonic PT-50DL54 50" Rear Projection...
Oct 05, 2009 | Onkyo LS-V955 System
May 20, 2009 | 2007 Subaru Impreza Outback Sport Wagon
May 11, 2017 | Philips 50PFP5332D 50 in. Plasma...
Nov 22, 2007 | InFocus ScreenPlay 5700 Multimedia...
Jul 07, 2017 | Sony TA-N9000ES 5-Channel Amplifier
407 people viewed this question
Usually answered in minutes!