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Discussion Starter · #1 ·
Sorry guys. No real troubleshooting here. This one was pretty obvious. I thought I'd post it in case it helps someone else with a similar problem.

My old Sony STR-D550Z AV Receiver started taking much longer for the output relays to click on and a couple of days later, I got no output from one of the channels.

Sure, a relay driver transistor could have been the problem, but I was reasonably certain that the mechanical relay had failed.




Here is the relay board for the front L/R channels.




Removed two screws.




Out with the old.




The only markings on the relays.




I entered DH2TU in Google and found a place at Ebay that sold replacements. They arrived the very next day after I ordered them and these are them.




In with the new. I cleaned the board with DeNatured Alcohol.




Ready to put it all back together.




Now I can't get it to fail. It works like new. I hope this helps somebody with a similar problem.

 

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Your post has been moved to a more appropriate location to make information easier to find and to make it more likely that others who are interested will find your post.
 

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Congrats on the DIY fix. Far too many of us would have thrown it in the trash and purchased something new.
 

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Discussion Starter · #6 ·
Are those your own home made speaker cabinets? They are really nice!
Thanks! Yes, I built the cabinets and stands. The speakers were a Rick Craig design of Selah Audio fame, using the high-excursion Exodus Anarchy woofers and a Dayton tweeter. The build was documented on another forum.

I haven't done many builds here at the Shack yet, but that will change once I get caught up on other projects so I can do some more speaker builds. I normally do my builds in a step-by-step fashion, to help bring others up to speed on cabinet building and finishing.
 
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