APM2.5 BLINKS

hello

 when I put the USB there was no response and was not recognized by the PC sounds and all seen are:

  • The blue light next to gps is continuous ON.
  • At the other side where the  I2C and PM plugs the yellow &blue light BLINKS quick for a second then goes off.
  • Then red light ON-and OFF for 5 times and then off

 I thought the regulator is burned because I measured the voltage in GPS Plug and got no reading, in the meanwhile Telemetry has about 4.8 volt and AP port has no volts.

I believe I may put some plugs wrong while putting back the wires specially I left all attached inside the airplane.

I hope I get an answer very soon and thanks

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