Trio TS120V Not showing 21MHz Display - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Station X · 6th Jul 2021, 8:33 am

Quote:

Originally Posted by unitelex

Mods,

Is it possible to re-open the historic thread with the above title from last November 19th posted by Skylark?

Thanks
Chris

Skylark has never posted, but I've found a thread by Skylark UK and merged this one with it.

Jon_G4MDC · 6th Jul 2021, 11:09 am

Thanks for reopening the thread Graham. Definitely the right one.
I'm glad there has been progress with the PLL problems.

On the S meter yes that is what it does - perfectly normal.
It is described in the TS130 operating manual but not in the service manual.
I captured a snippet.

unitelex · 7th Jul 2021, 11:53 pm

Thanks for re-opening Graham
Thanks for the feedback from Martin and Jon

The owner now has the set back in working order with an offer to replace more of the 2SC460's in the future.

Mods please close the thread - thanks

WB6NVH-GEOFF · 12th Jul 2021, 6:36 am

Before it gets locked again, I would add that I have a TS-120S (USA market) in the queue here and the thing has the worst number of cold solder joints I have ever seen in a piece of ham gear. The solution here is going to be pulling boards and re-flowing most of the joints. Using a chopstick and poking around is usually the quickest way to find these duff joints. I don't know why the 120's seem to have this issue while other models have not, at least for me.

6th Jul 2021, 11:09 am	#22
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: Trio TS120V Not showing 21MHz Display Thanks for reopening the thread Graham. Definitely the right one. I'm glad there has been progress with the PLL problems. On the S meter yes that is what it does - perfectly normal. It is described in the TS130 operating manual but not in the service manual. I captured a snippet. Attached Thumbnails

7th Jul 2021, 11:53 pm	#23
unitelex Hexode Join Date: May 2005 Location: Greater Manchester, UK. Posts: 496	Re: Trio TS120V Not showing 21MHz Display Thanks for re-opening Graham Thanks for the feedback from Martin and Jon The owner now has the set back in working order with an offer to replace more of the 2SC460's in the future. Mods please close the thread - thanks

12th Jul 2021, 6:36 am	#24
WB6NVH-GEOFF Tetrode Join Date: Aug 2013 Location: Monterey, California USA Posts: 51	Re: Trio TS120V Not showing 21MHz Display Before it gets locked again, I would add that I have a TS-120S (USA market) in the queue here and the thing has the worst number of cold solder joints I have ever seen in a piece of ham gear. The solution here is going to be pulling boards and re-flowing most of the joints. Using a chopstick and poking around is usually the quickest way to find these duff joints. I don't know why the 120's seem to have this issue while other models have not, at least for me.