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-   -   Kenwood TS830S no ALC in tune mode. (https://www.vintage-radio.net/forum/showthread.php?t=197925)

carlos10 30th Jan 2023 7:40 pm

Kenwood TS830S no ALC in tune mode.
 
hallo,
in tune mode i have no alc indication,
first is was intermittent, alc on a few bands,
now the alc indication is completely gone,
in tune mode the meter makes a small movement to the left of the zero mark,
the radio is still performing full output 100watts,
mayby there some quys who experienced the same symptomes....
carlos on6cn

Cruisin Marine 30th Jan 2023 7:46 pm

Re: ts830s no alc in tune mode
 
There are posts relating to this problem
https://cse.google.com/cse?cx=008872...h+this+website

HamishBoxer 30th Jan 2023 9:01 pm

Re: ts830s no alc in tune mode
 
Dirty processor switch a quick look revealed.

carlos10 1st Feb 2023 9:33 am

Re: Kenwood TS830S no ALC in tune mode.
 
No, it's not the processor this time, is there somewhere a description in pdf how TS830 ALC works?
Carlos ON6CN

murphyv310 1st Feb 2023 10:16 am

Re: Kenwood TS830S no ALC in tune mode.
 
Guaranteed it will be dry joints.
My very clean TS-830S had the same issue and other intermittent problems, all gradually sorted with so many dry joints found.

carlos10 1st Feb 2023 10:57 am

Re: Kenwood TS830S no ALC in tune mode.
 
ok, thanks reply, what do you mean with dry joints...
no indication of mike sig in alc mode as well
i have full rf output in usb/lsb
so mike is working ok , also full cw rf output
tested on other receiver
what does the relay on the rectifier unit...
carlos on6cn

murphyv310 1st Feb 2023 4:49 pm

Re: Kenwood TS830S no ALC in tune mode.
 
The soldering gets what is known as dry joints. Also I've come across soldered joints that have little or no flux and when prodded reveal a clean printed circuit land. This problem is now rearing it's ugly head on the TS-830S
Do you have the service manual? To identify the circuit area and what individual components do without it is impossible. To do the resoldering will require patience and time doing a little at a time and testing so any mistakes can be rectified, not really a job if you are less than confident.
Mine started to show problems after replacing the PA valves as items got disturbed inside.

HamishBoxer 1st Feb 2023 5:42 pm

Re: Kenwood TS830S no ALC in tune mode.
 
I would always recommend a head magnifier when looking for dry joints,

carlos10 2nd Feb 2023 7:43 pm

Re: Kenwood TS830S no ALC in tune mode.
 
solved, it was rl1 , this one drive me nuts hi
carlos on6cn

G8UWM-MildMartin 3rd Feb 2023 12:43 pm

Re: Kenwood TS830S no ALC in tune mode.
 
Was that the 4-pole one on the AF Unit?

Unfortunately, Kenwood/Trio called all of the three different relays (ANT relay, Rectifier Unit relay and AF Unit relay) RL1.


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