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295012z board?

Discussion in 'CB Radio Modifications' started by 338_MtRushmore, Dec 30, 2017.

  1. 338_MtRushmore

    338_MtRushmore Well-Known Member

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    Anyone know anything about the ept295012z board? Everything I find for the 2950 is a 13z board. I acquired a hack job and trying to reconstruct wiring. Looks like it had an echo board, some repaired traces and the finals replaced. The finals aren't even screwed down tight o_O

    I am assuming I will just have to run with the 13z diagrams and hope its close enough?

    Since I'm already asking, what are the boards over the the finals? Do the monitor temperature or something?


     

  2. LeapFrog

    LeapFrog Sr. Member

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    I believe the little boards you're talking about are the thermal tracking bias diodes (MV1Y)

    My guess is the 13z is a slightly updated revision of the 12z?!
     
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  3. 338_MtRushmore

    338_MtRushmore Well-Known Member

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    This project got put on hold fast, I don't have a 6 pin mic plug. How is that even possible...
     
  4. nomadradio

    nomadradio Analog Retentive

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    That's a really old 2950. Don't have any data here about what the differences are.

    73
     
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  5. 338_MtRushmore

    338_MtRushmore Well-Known Member

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    Yikes, no tx or rx. Pa does work, so it's not totally dead.
     
  6. LeapFrog

    LeapFrog Sr. Member

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    So we know at least some of the audio chain is working, check that the PLL/VCO area is in good working order next, then that TX/RX switching is working.
     
  7. 743SEPA

    743SEPA New Member

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    How's your 2950 project coming? I have one with the 12z board that's bone stock,has a few issues but still works...most of the time.
     

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