Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television
Upon hitting the power button, the Power/Standby light blinks 8 times. During this time, I hear audio for about 5-8 seconds, then the tv shuts off. The Power/standby light continues to blink 8 times, pausing, and then repeating.
This looks like a problem with the High Voltage or switching power supply section of the TV set. What you need to do is to measure the voltage from the HV transformer to the Anodes of the CRTs with a high voltage probe, and check the voltage output of the switching power supply. What may have happened is a component may have shorted out causing an over-current condition with is triggering the shutdown circuit (These are the relays you are hearing). I would check the Horizontal Output transistor, and the components in that section of the TV.
In addition check the voltage test points on the HV / Horizontal and switching power supply board. This will determine if the section is working or not (most likely not). Make sure you have a schematic, and multimeter and a high voltage probe.
I hope this helps,
Posted on Oct 26, 2007
Tips for a great answer:
Feb 27, 2014 | Sony KP-51HW40 51" Rear Projection...
Feb 27, 2011 | Sony KP-46WT510 46" Rear Projection HDTV
Mar 23, 2010 | Sony KP-51WS520 51" Rear Projection...
Jun 17, 2009 | Projection Televisions
Jul 08, 2008 | Sony Grand WEGA KF50WE610 50" Rear...
Feb 23, 2008 | Projection Televisions
Jan 10, 2008 | Sony Grand WEGA KDP-51WS655 51" Rear...
Jan 08, 2008 | Sony KP-65WS500 65" Rear Projection...
Jul 14, 2007 | Sony KP-51WS510 51" Rear Projection...
179 people viewed this question
Usually answered in minutes!