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  • 26/08/2022

    as soon as I received this preamp I tried to connect it and it did go into protecting the power supply. rechecked the connections and plugged it back in and did go unprotected the power supply again. I then opened it up to check the problem. The poorly made soldering of the external power connector shorts the power supply. also checking better i verified the lack of a coupling smd capacitor from the RF input to the transistor so it could not work anyway.

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