Question about Sony DAV-SB300 System
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
SOURCE: MY SONY DAV-SB300 DOES NOT
Check carefully power cord connection. That is often the reason for no power problem.
If the power cord is OK the problem is a defective power board. Sometimes it is possible to see visually that the power board is defective because the capacitors on board look bulged. Before testing the power board it is necessary to disconnect power and to discharge PSU capacitors shorting the capacitors contacts with a screwdriver. Example of discharge points are shown below:
After that, if there is nothing unusual at a glance, testing will follow reading impedance on single components and circuit. Testing starts from power cord impedance (it must read zero from plug's prongs to solder joints on PSU), resistors and diode in AC section of PSU, near to the power cord attachment. Next part of testing is done with power on, tracking voltage from AC section of PSU down to connectors in DC-DC section of PSU. For safety reasons testing must be done by a trained person.
Posted on Aug 18, 2011
Tips for a great answer:
Feb 26, 2018 | Sony DAV-SB300 System
Jan 22, 2011 | Sony DAV-SB300 System
Jan 02, 2011 | Audio Players & Recorders
May 19, 2010 | Sony BRAVIA® DAV-HDX277WC Theater System...
Apr 22, 2010 | Sony DAV-SB100 System
Sep 02, 2007 | Sony DAV-SB300 System
453 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: