Thorn 1400/1500 mechanical tuners - UK Vintage Radio Repair and Restoration Discussion Forum

rbm1973 · 15th Jan 2018, 7:26 am

Has anyone found a way of repairing the mechanical tuners used in thorn sets such as 1400/1500 and others.

The problem being the plastic on the ends of the tuning sliders becomes brittle
and breaks allowing the spring to come fully forward jamming up the buttons so they are near on impossible to get them to latch.

At the moment i have put a cable tie around each one between the slider and the circlip to stop the spring going forward it works but as the clips move it still sticks sometimes.

Nuvistor · 15th Jan 2018, 9:40 am

Full instructions on this web site using M6 cups and M6 washers.

https://www.radios-tv.co.uk/repairing-a-brcthorn-tuner/

pastyboy · 15th Jan 2018, 1:44 pm

Mikey405 also has info using rawlplugs his ws is oldtechnology.net

rbm1973 · 16th Jan 2018, 5:23 pm

I have solved the problem believe it or not using cup washers. I used M10 metal ones from my hardware store as it was the only thing I could find initially I was going to use plain washers but saw cup washers on the shelf and thought they would support the springs better.

15th Jan 2018, 7:26 am	#1
rbm1973 Pentode Join Date: Jan 2016 Location: Crewkerne, Somerset, UK. Posts: 119	Thorn 1400/1500 mechanical tuners Has anyone found a way of repairing the mechanical tuners used in thorn sets such as 1400/1500 and others. The problem being the plastic on the ends of the tuning sliders becomes brittle and breaks allowing the spring to come fully forward jamming up the buttons so they are near on impossible to get them to latch. At the moment i have put a cable tie around each one between the slider and the circlip to stop the spring going forward it works but as the clips move it still sticks sometimes. __________________ Keep the soldering iron warm and never give up or you will kick yourself. BVWS MEMBER

15th Jan 2018, 9:40 am	#2
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Thorn 1400/1500 mechanical tuners Full instructions on this web site using M6 cups and M6 washers. https://www.radios-tv.co.uk/repairing-a-brcthorn-tuner/ __________________ Frank

15th Jan 2018, 1:44 pm	#3
pastyboy Hexode Join Date: Nov 2015 Location: Cornwall, UK. Posts: 270	Re: Thorn 1400/1500 mechanical tuners Mikey405 also has info using rawlplugs his ws is oldtechnology.net __________________ I'm a callins, get me outta here ! (I am also an erie but it's my day off)

16th Jan 2018, 5:23 pm	#4
rbm1973 Pentode Join Date: Jan 2016 Location: Crewkerne, Somerset, UK. Posts: 119	Re: Thorn 1400/1500 mechanical tuners I have solved the problem believe it or not using cup washers. I used M10 metal ones from my hardware store as it was the only thing I could find initially I was going to use plain washers but saw cup washers on the shelf and thought they would support the springs better. __________________ Keep the soldering iron warm and never give up or you will kick yourself. BVWS MEMBER