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fet

  1. faccan

    G6700 FET polarization

    Hi Everyone, I'am repairing a G6700 and I have some problems as the circuit in manual is not like the one implemented. Power Rail of the FET circuit is +31 V and -32V (not + 18.2 and -18.2V as is in the schematics) At the Source Pin of each FET ( 1 to 4) the is 6 V (not 11.3V as is in...
  2. K

    Dynaco FM-5 Front-end Question

    Hi everyone, Could anyone tell me the identity of the FETs that are used in the Dynaco FM-5 RF front end? Thanks, Keith
    • kpmadden
    • Thread
    • dynaco fet fm-5 fm5 front end
    • Replies: 2
    • Forum: Tuners
  3. vinylisfinyl

    990DB FM Tuner erratic

    Salutations, Sansui specialists! I am in need of your input on a problem with my 990DB and its FM tuner. I got this unit from my aunt, who rescued it from her neighbor’s garbage (fifty lashes on the backside for throwing a Sansui out!!). After replacing the fusible resistors on the driver board...
  4. smurfer77

    2SK97 dual N-channel JFET spec measurement & substitute

    Well the funny thing about me writing this thread is that I don't even own an amp that uses the 2SK97. I got interested in the topic because I was doing some measurements of the 2SK129A (another dual N-JFET) which appears in my Sansui AU-X11. Anyway, it looks like the 2SK97 is used in some...
    • smurfer77
    • Thread
    • 2sk97 fet jfet
    • Replies: 51
    • Forum: DIY
  5. kohngallery

    AU-919 FET problems

    I have a Sansui AU-919 that goes into protection mode so I asked Northridge Electronics to take a look. Here is the response: Your right channel power amp intermittently produces DC at the output and that's why the protection is not turning on. I suspect the problem is the dual differential FET...
  6. QSilver

    Replacement JFET... what's difference between transistor?

    I'm working on an old organ at the moment and I think I'm gonna need a replacement for a JFET... it's a 2N4360 - the only equivalent I could find was an NTE326. I was hoping someone could point me in the direction of a better one. Also, I notice tha tthe terminals a DGS and not CBE etc and I...
    • QSilver
    • Thread
    • 2n4360 fet j-fet jfet nte326
    • Replies: 13
    • Forum: DIY
  7. A

    Le Pacific J-FET phono preamplifier

    Hello guys!! Long time ago I decided o try the schematics of the Le Pacific preamplifier. If I try to power the entire bloc from a DC source the hum is higher, so I power it from 3 x 9V battery but they don't last so much. I also placed a 220uF/50V capacitor between + and - for reducing a...
    • andreidaniel
    • Thread
    • boozhound fet fono le pacific phono pick-up preamplifier riaa turntable
    • Replies: 0
    • Forum: Solid State
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