I have PD765 Hytera radio with a small problem .
Seems to be a well known problem Q605 a P-MOS Ttransistor that dies when connecting the speakermike wrong.
Problem is .. schematic shows a PNP transistor .. with a P-Mos type SI1013R (SI2307BDS) ...
Second problem seems the schematic of the 400-470Mhz version is little bit different compared to 450-520Mhz version .
In the 450-520Mhz it is a P-Mos Transitor in the schematic ..
So now i'm confused .. will replacing Q605 solve my issue ? And what to replace with ? P-MOS or PNP ??
The print on the curent transistor is DJA ( the J placed horizontal ) .. i have no idea what transistor this is ...