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Re: Help repair a faulty Roland LAPC-I

Yeah without -5v you won't hear anything front the lapc-i as the audio amp circuit needs it to operate. Hopefully this will be the only issue and you'll enjoy this iconic card soon! I would suggest holding off messing with the resistors until a proper PSU solution is found. Maybe they just look old, …

Re: Help repair a faulty Roland LAPC-I

-5v is ISA pin B5 (check the pinout here: https://en.wikipedia.org/wiki/Industry_Standard_Architecture ) basically the 5th pin from the right but on the back side you should first determine if your PSU supplied -5v , if it is an AT one then it is ok but ATX ones dropped it fairly soon after their …

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