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Bigbob
Posted on Tuesday, January 01, 2002 - 4:01 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Using semiconductor numbers from galaxy saturn service manual. Ic4 replaced,tr50&tr51 tested ok have not checked tr49.I can adjust carrier from zero to 13 watts and key mike(D-104/TUG-9)and have no modulation,mike&battery in fine condition but,remove mod.limiter(tr32) and it over modulates. I'm stumped!
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307
Posted on Wednesday, January 02, 2002 - 10:56 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Well , I would have to guess , if you remove TR32 and it has overmodulation , TR32 is bad IF you say when you put it back in the modulation dies...OR TR32 is biased on somehow...

307
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Bigbob
Posted on Wednesday, January 02, 2002 - 9:57 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Thanks 307 I will check for whiskers and solder bridges aside from that the AMC amps are my next stop.

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