Hi everyone... looking for help as I'm not a technician. No, schematics are not available, and I did search the web to no avail to my surprise
Is there a way to bypass an old defective rotary input selector in this Exposure XV. I'm looking into using only one input fed by a dac. I don't need the phono or tape functions obviously. I know they are good for phono etc... but this is not a route I want... I've tried a few things like connecting wires from rca inputs directly to the volume pot (the output of the selector seems to contact directly to it, which surprises me because I don't see how the preamp section does it's job this way...). Anyway the results is awfully distorted... I hesitate to unsolder the selector completely as it is a big job and I might have to revert... I tried cleaning but this is ridiculous on a 30 yo selector... I somewhat dismantled it seeing black tracks and was a pain to put back together... I bent sections to get in and snapped two pins from the board anyway. Parts are not available. I disconnected all rca inputs from the board except CD which I use now with the occasional balance shift which drives me crazy... Do these input selectors have an impedance that should be matched w a resistor like a balance pot or volume pot?... Is it a ground problem? (but the ground is on the board and connected to the input back plate)... All I can do is post pictures and hopefully someone can direct me on the pics to what I should do with a minimum of technical terms... would desoldering the selector completely avoid some feed back to the selector when wired directly which could have been my problem from the start... should I remove the tape selector too as they are connected... I thought this would be simple...
Thanks in advance but I can imagine this could help a few people as well... I'm sure I'm not the only one who would like to bypass these and use only one input (now a days) or install a new selector switch with a few wired inputs...
Is there a way to bypass an old defective rotary input selector in this Exposure XV. I'm looking into using only one input fed by a dac. I don't need the phono or tape functions obviously. I know they are good for phono etc... but this is not a route I want... I've tried a few things like connecting wires from rca inputs directly to the volume pot (the output of the selector seems to contact directly to it, which surprises me because I don't see how the preamp section does it's job this way...). Anyway the results is awfully distorted... I hesitate to unsolder the selector completely as it is a big job and I might have to revert... I tried cleaning but this is ridiculous on a 30 yo selector... I somewhat dismantled it seeing black tracks and was a pain to put back together... I bent sections to get in and snapped two pins from the board anyway. Parts are not available. I disconnected all rca inputs from the board except CD which I use now with the occasional balance shift which drives me crazy... Do these input selectors have an impedance that should be matched w a resistor like a balance pot or volume pot?... Is it a ground problem? (but the ground is on the board and connected to the input back plate)... All I can do is post pictures and hopefully someone can direct me on the pics to what I should do with a minimum of technical terms... would desoldering the selector completely avoid some feed back to the selector when wired directly which could have been my problem from the start... should I remove the tape selector too as they are connected... I thought this would be simple...
Thanks in advance but I can imagine this could help a few people as well... I'm sure I'm not the only one who would like to bypass these and use only one input (now a days) or install a new selector switch with a few wired inputs...
