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Norbye

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  • Location
    Bergen, Norway
  • About
    field recordist.
  • Interested in Sound for Picture
    Yes

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  1. Thanks for your replies ! I have ordered some 7 pin binder connectors and will make up new line in and out’s for it. there has been a leak for sure at some point. should mention It also has a mod: a switch to turn on and of the speaker in playback and a added 2.5 kΩ ±2% (G) resistor (found inside back electrical tape) on a white and purple cable that looks added in the region of the speaker, have to remove speaker to see where it terminates, its not on the speaker, the added switch is on the speaker circuit. @ Dela thanks for the synoptic diagram ! thats a good route to follow. It does disappear somewhere must be possible to find with the diagram. I will post back with a possible fix : )
  2. Hi, new to this forum, but have read a number of helpful threads here before and thus when i found myself in a pickle and in need of some pointers and advice I though i would ask this here. some background: I have been using Nagra for some time, mostly a 4.2 for sound effects and tape loops. I have some experience in problem solving these, internal fuses and so on, many moons ago I got a very thorough guide at Pro Sound (nyc) all recorded to tape on the machine we inspected. I recently borrowed a rather well used 4 IV-S for digitisation purposes, this machine works well for playback, but off-course i want to also try the nice preamps and do some recording on it, give it a good clean, motor functions is good, rollers, heads seem ok, then I check the recording functions, thats when i realized that the left mic input was almost inaudible compared to the right, both in monitoring and on tape, i tested with a multimeter the voltage and reading is good on all the steps of the pre amp. when measured of the xlr, the right channel is perfect both with line and mic on all voltage setting, but the left i have to almost max out to hear and you can hear i distorts when you turn the gain right up, but its still not loud very out, this volume and distortion is reflected in line output, headphone and on tape . iIt plays back a stereo tape true. i wonder at what stage the fault could be, feels like its after the pre amp ... has anyone had similar issues. any information welcome. thanks for looking. ( its is a old machine approx 1974 )
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