开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: FT-817 almost powers up


 

Today's Update

  • I found there is no connection in the power jack? from the outside barrel side (negative) to the trace that runs to the common mode choke (negative side). I've soldered a wire to the jack pad so I can power the rig up on external power.? With that in place...
  • When I plug in external power, as before the rig coms up with all segments and icons black, and if I shine a flash light on the LCD I can see it's trying to display the charge status (CHG TIME RMN and a count down timer.
  • If I press the PWR-ON,? it tries to boot and shuts off. Removing the power plug and re-inserting takes me back to bullet 1.

If I run on just battery, it tries to boot, and shuts off.
Both internal fuses are intact, and I see good battery/line voltage to the display board, and +5v on the display board regulator and the reset chip next to it.
Seems like something is dragging it down before it fully boots up.? I am assuming the CPU is good because it can display the charge time.

Bill

Join [email protected] to automatically receive all group messages.