[TenTec] 257 Voice board question

[Jim Weisz]

  Just bought a used 257 voice module, to use in my paragon.. It works fine, however after
powering down the radio, the module will drain the memory backup battery in a matter of a
few minutes, prior to the installation of the board, there was no battery drain problem..
  Seem to recall that there was a simple fix for this mentioned recently, something like
replacing a few caps or a diode?... Does anyone recall what this was?... Also am looking
for a schematic and written info on the 257...
                                              thanks.. Jim.. K2NP

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