Question about Sony STR-DB930 Receiver

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Speakers Cutting Out

Hi. I have had my STRDB930 for a few years. The rear speaker relay started cutting in and out, making a rapid clicking sound every so often. Sometimes the rear speakers would be off for ages before clicking back on. Recently, the centre started doing the same. I have re-soldered 4 solder joints underneath the main board that I can access via the removable panel on the bottom, which looked like dry joints. These were on the blue relay units mounted on the lower board. The remaining blue relay, mounted on a board higher up, continues to click on and off, I can't gain access to this board. I am unsure as yet if I have fixed anything, as I only soldered the dry joints yesterday. Has anyone else had this problem?

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I posted this solution on FixYa to help someone who had the same problem, or at least a similar problem. If you remove the slotted panel underneath the bottom of the receiver, you can gain access to the underside of the main circuit board. There are 3 relay units there, they are blue boxes that can be seen if you shine a torch down through the top. I found the solder joints on these relays looked as though they had broken away from the board, there appeared to be a dark ring around the pin of the relay. I re-soldered 4 of these connections, and, so far, that seems to have done the trick. Time will tell. These relay units connect and disconnect the speakers. There is one other relay that is mounted on a seperate board above the main board, that I can't access easily. If this one is also faulty, I will be un-able to fix it, as it would involve removing the entire guts of the receiver. If any of your technical team disagree with my remedy, or can offer any other solution, that would be appreciated. Thanks.

Posted on Sep 15, 2008

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