Juel Posted November 10, 2008 Report Share Posted November 10, 2008 Hi, I have some trouble with my mbfm. I'm building a minimal setup withonly core module and fm module. The problem is that it is completely silent. I have some ideas of what it might be, but before I start describing every detail I wonder if anyone has any experience with broken OPL3:s.Are there any typical symptoms or are they just dead? I wonder this because of the history of my chip(s). I salvaged some soundcardsfrom the junkyard a couple of years ago (I must be psychic because I didn't know about this project and I always wondered why I saved ISA-cards ;)) , although I took them out of a computer they have most likely been exposed to a lot of moist (but hopefully not rain). I might add that they empty the used electronic bin quite often, so it is not likely that the computers had been there for more than a week or two. After that they have been stored in my "playingroom" in boxes and onlytouched when I was looking for some card (have helped quite a lot of people withmy stock :)). Finally I only had an unregulated soldering iron with a max temperature of 450 C when i desoldered them. I was quick and and they were not even warmon the outside immediately after I was finished, but you never know about theinside.I have one spare OPL3, but before I switch I want to be sure there's no other problem./juel Quote Link to comment Share on other sites More sharing options...
tongenerator Posted November 11, 2008 Report Share Posted November 11, 2008 ou weeee :-[i want to build an mb fm synth is welli am getting scared allready, when thinking about the soldering of the chip :D Quote Link to comment Share on other sites More sharing options...
Juel Posted November 18, 2008 Author Report Share Posted November 18, 2008 You shouldn't be scared. Actually the soldering wasn't that difficult, but the desoldering needs some care notto harm the YMF. Quote Link to comment Share on other sites More sharing options...
Juel Posted November 18, 2008 Author Report Share Posted November 18, 2008 OK, now I decided my chip is not broken.I switched the chip for my spare and the result was exactly the same. In fact Iused my really bad oscilloscope to checkevery signal that could be interesting.(I will make a new topic for troubleshooting.) Quote Link to comment Share on other sites More sharing options...
Juel Posted November 21, 2008 Author Report Share Posted November 21, 2008 UpdateAs you can see in my other mbfm topic (Strange output from mbfm) itis now working. :) :) :) The problem was a bad mios upload. Soprobably both OPL3:s were ok (since switching them gave exactly thesame error). So I guess the YMF:s can take quite a punch before breaking (don't know about any long term effect though).Again ThanksJuel Quote Link to comment Share on other sites More sharing options...
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