dphirschler Posted November 5, 2014 Share Posted November 5, 2014 I have a black console that suddenly stopped outputting sound. Any recommendations how to proceed with repairs. OLD_CS1, this is your old console that you had done some work on trying to get s-video working. Not saying your work caused this, but maybe you'll have some special insight. Darryl Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted November 6, 2014 Share Posted November 6, 2014 Unfortunately I do not. All the work I did centered around the video circuitry. I will go over the pictures of the work I did and the schematics tomorrow to make sure that I did not inadvertently cause problems with the audio. Quote Link to comment Share on other sites More sharing options...
Imperious Posted November 6, 2014 Share Posted November 6, 2014 I went down this road but with trying to get component Video working from a TMS9929ANL, got nowhere with it unfortunately, but may try again at some point. The point is that i did mess around with the outputs from the 5 pin din to accomodate R-Y, B-Y, Luminance/Sync and Audio out, so maybe You may have changed the pinout? Other than that swap another sound chip in if possible. Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted November 6, 2014 Share Posted November 6, 2014 I went down this road but with trying to get component Video working from a TMS9929ANL, got nowhere with it unfortunately, but may try again at some point. The point is that i did mess around with the outputs from the 5 pin din to accomodate R-Y, B-Y, Luminance/Sync and Audio out, so maybe You may have changed the pinout? Other than that swap another sound chip in if possible. Yeah, I was playing with getting S-Video but found the color spaces are different enough not to work. When I was done the audio was still working (I even played some games before boxing it up.) I still want to ensure that I did not do anything that would kill the sound chip. Quote Link to comment Share on other sites More sharing options...
dphirschler Posted November 6, 2014 Author Share Posted November 6, 2014 I played some games with it too. It worked just fine, and then one day it was silent. I do have another sound ship. Desoldering it will be the trick.. Quote Link to comment Share on other sites More sharing options...
Stuart Posted November 6, 2014 Share Posted November 6, 2014 I played some games with it too. It worked just fine, and then one day it was silent. I do have another sound ship. Desoldering it will be the trick.. Pretty sure the sound chip is (normally) socketed (along with the GROMs), so should be an easy swap. Quote Link to comment Share on other sites More sharing options...
coolio Posted November 7, 2014 Share Posted November 7, 2014 I have a black console that suddenly stopped outputting sound. Any recommendations how to proceed with repairs. OLD_CS1, this is your old console that you had done some work on trying to get s-video working. Not saying your work caused this, but maybe you'll have some special insight. Darryl I had a similar problem. For me, the problem was some of the pins connecting the A/V out DIN-5 to the circuit board had worked themselves loose after years of plugging and pulling the video connector. This was fixed by re-soldering the pins to the circuit board. Quote Link to comment Share on other sites More sharing options...
dphirschler Posted November 7, 2014 Author Share Posted November 7, 2014 Well, what do you know? I replaced the sound chip and now I have sound! Simple fix. Good thing I had a trashed motherboard (with at least a good sound chip). Thanks everyone. Darryl Quote Link to comment Share on other sites More sharing options...
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