Question about Radio Communications
My Kenwood TS-450s gives a cw error code of "CHEC" when my AT-TUNE button is pressed. The atu won't activate and nothing happens when I depress my PTT. Fault occurred suddenly.
This is usually due to a stuck or shorted ptt line. I have repaired a couple of these and it was the same component each time. The packet TX transistor Q65 shorted causing the radio to power up in TX inhibit mode. Transistor Q65 is located on the underside of the IF board under the ACC 2 connector. This switching transistor is used only for tx (pin 9 of acc 2) and no other circuits depend on it. It can be removed completely if you don't mind not having ptt on acc 2.
This seems to be a common problem lately, I hope this helps you.
Posted on Aug 09, 2011
I just had the same problem a few minutes ago and discovered that my desk mike's PTT was locked on. The manual says if you power up with the SEND button ON, transmit is inhibited, so powering up with the PTT engaged apparently produces the same result. This happened to me once before but I didn't know what I did to fix the problem. Whew!
Posted on Feb 16, 2009
With this kind of problem i would suggest to send it to kenwood service center coz the is not easy,it needs a qualified technician....
Posted on May 09, 2008
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 07, 2016 | Kenwood TS-570D HF Transceiver
Aug 26, 2014 | Radio Communications
Feb 05, 2014 | Kenwood TS-2000
Apr 23, 2012 | Furuno FS1503 (199 Channels) 2-Way Radio
Jun 10, 2009 | Computers & Internet
Apr 24, 2009 | Computers & Internet
Dec 31, 2008 | Radio Communications
1,038 people viewed this question
Usually answered in minutes!