Kenwood TK-890 Speaker Problem

[ambdrvr]

Hello all,

I am having a speaker problem with a Kenwood TK-890. Within the last year or so we seperated our 890 from a dash mount into a full featured dual head system. Everything was working great until about 2 weeks ago. We received our new unit and when I transferred the radio from one unit to the other we made the decision to switch from full featured heads to the basic heads with the speakers built in for a simple install and a cleaner look. Now I have reprogrammed the radio to accept the new heads and they both work great, however I have no sound from one of the heads. One works perfectly and the other has no sound. I have taken the heads back apart and double checked that the speakers were plugged in and no the rear accessory port but still no sound. I am running out of ideas and figured maybe someone here can tell me what I'm missing.

Any and all help is appreciated in advance.

Ambdrvr

 

[n7maq-1]

Hello all,

I am having a speaker problem with a Kenwood TK-890. Within the last year or so we seperated our 890 from a dash mount into a full featured dual head system. Everything was working great until about 2 weeks ago. We received our new unit and when I transferred the radio from one unit to the other we made the decision to switch from full featured heads to the basic heads with the speakers built in for a simple install and a cleaner look. Now I have reprogrammed the radio to accept the new heads and they both work great, however I have no sound from one of the heads. One works perfectly and the other has no sound. I have taken the heads back apart and double checked that the speakers were plugged in and no the rear accessory port but still no sound. I am running out of ideas and figured maybe someone here can tell me what I'm missing.

Any and all help is appreciated in advance.

Ambdrvr

Look at where the control head cable pugs into the remote mount on the front of the radio. Make sure the connector is seated well, I have seen where that plug is lifted up on one end just a bit. The RX audio lines are on pins 10 , and 11 on the far end (black and gray on the cable in front of me) and the head works just fine except for no RX audio. I have also seen where the pin on the radio end has been damaged, but that is rare, you really have to push hard with the plug backwards to do damage the pin. We see it from time to time on new ambulances.

Let us know if this works or not. If not you may have a bad KRK-6DH. The Head 1 line gets is audio from the radio drawer, and head two has it's own amp in the KRK-6. One way to test the KRK-6 is move the cabels (leave the heads in place) at the KRK-6. If it's head 1 that is working from the radio and after you swap cables/heads and the one plugged into head 1 works there, then replace the KRK-6, if the problem follows the head (the same control head has no audio) then look at the KCT-22 cable, or the head itself.


Jim