20 Most Recent Sony DAV-SB300 System Questions & Answers


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.

Sony DAV-SB300... • Answered on Aug 18, 2011

Yes, that shouldhave been taken care of when you set the system up, right?

Page 67...


Sony DAV-SB300... • Answered on Jan 22, 2011


Sony Audio... • Answered 3 days ago

There are caps on the cable ends that have to be removed. Then you insert it in the device

Sony Audio... • Answered on Jul 19, 2021

go to the shop and ask for USB/HDMI cable

Sony Audio... • Answered on Jul 17, 2021

Yes there are companies that rewind transformers. Or You can purchase or use any power supply as long as the voltages are okay. Sony are very well known for doing things differently. Here is the service manual. https://www.manualslib.com/manual/697827/Sony-Hcd-Ed1.html ..

Sony Audio... • Answered on Jul 11, 2021

we are not SONY tech support here

Sony Audio... • Answered on Jul 10, 2021

The only owner's manual I saw in searches was for $50 - http://www.manuals-in-pdf.com/download-LBTD307-SONY-p-271615.html I saw a number of free Service Manuals for it, but those are for repair rather than instruction in use. SONY LBTD307 Owner Manual

Sony Audio... • Answered on Jul 04, 2021

Cause: Battery is 100% discharged. Therefore, PC's USB with 5V/500mA set up has not enough power to start up the charging process because loading current is greater than the set up, therefore USB is disabled immediately due to sudden current load. Remedy: Battery must not be discharged 100% If it happens then the supplied AC adaptor must be used firstly because it is providing 5V/800mA power. After a couple of minutes the unit can be connected to PC without problem then it can continue the charging during file transfer, etc.

Sony Audio... • Answered on Jul 01, 2021

I brought a second hand muteki 7.2 system but only got the av receiver STR-KM7600 does anyone know how I can jerry rig the subs to work through the receiver.

Sony Audio... • Answered on Jun 26, 2021

Not finding what you are looking for?
Sony DAV-SB300 System Logo

11 questions posted

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts


Level 3 Expert

5720 Answers

The Knight
The Knight

Level 3 Expert

76698 Answers

 Francisco Mauricio...
Francisco Mauricio...

Level 3 Expert

1551 Answers

Are you a Sony Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Sony Audio Players & Recorders

  • Sony Audio Players & Recorders

Most Popular Question

sony dav sb300 not

  • Audio Players & Recorders