Kenwood TR-7800 2 Meter FM Transceiver HAM Radio Transmitter Parts or Repair

Description

Kenwood TR-7800 2 Meter FM Transceiver HAM Radio Transmitter Parts or Repair. The radio transmits strong on high 30 watts plus, but there is no vfo light up to know what channel it's on. The unit should show frequency and channel but it doesn't. Has good receive noise. Someone cornhole the top of the radio with three RCA jacks, one says audio and I can understand that the second Jack says PTT push to talk maybe, but what the heck is cos?? To control the vfo to make it light up, would have been a good radio,  if someone had not screwed up it with that. So it's going for parts even though the vfo won't light up no mic or power cord. S-10-G+D