Trio TS510 L3 choke - UK Vintage Radio Repair and Restoration Discussion Forum

carlos10 · 6th Oct 2020, 12:10 pm

choke is in the final compartiment,
what could be the value?
can not find it in service manual(yet)
carlos

deswradio · 6th Oct 2020, 2:25 pm

I have a TS510 too (and one day, I'll clear out the dust and gather the courage to turn it on again...!). I measured L3 - it's about 0.34mH and 3.5 ohms. Good luck!

Best wishes
Des

carlos10 · 6th Oct 2020, 4:30 pm

hi, thanks
i have one who is close to your measuring,377µH 3,5 ohm so thats ok
the one in the radio im restoring was 5mH r 20 ohm
carlos

deswradio · 6th Oct 2020, 4:44 pm

Does it look like the original component? Is there evidence of soldering and replacement? But your 377 microhenry 3.5 ohm component sounds just right!

Best wishes
Des

carlos10 · 6th Oct 2020, 5:58 pm

hard to tell, there were several versions, but the first time i try to tune it i had fireworks in the tubes, all voltages are ok on the tubes, i wil use the 370 ùH coil now instead of the 20mH coil .

6th Oct 2020, 12:10 pm	#1
carlos10 Pentode Join Date: Apr 2007 Location: Sint-eloois-winkel 8880, Belgium. Posts: 168	Trio TS510 L3 choke choke is in the final compartiment, what could be the value? can not find it in service manual(yet) carlos

6th Oct 2020, 2:25 pm	#2
deswradio Tetrode Join Date: Sep 2020 Location: Lewes, East Sussex, UK. Posts: 66	Re: Trio TS510 L3 choke I have a TS510 too (and one day, I'll clear out the dust and gather the courage to turn it on again...!). I measured L3 - it's about 0.34mH and 3.5 ohms. Good luck! Best wishes Des

6th Oct 2020, 4:30 pm	#3
carlos10 Pentode Join Date: Apr 2007 Location: Sint-eloois-winkel 8880, Belgium. Posts: 168	Re: Trio TS510 L3 choke hi, thanks i have one who is close to your measuring,377µH 3,5 ohm so thats ok the one in the radio im restoring was 5mH r 20 ohm carlos

6th Oct 2020, 4:44 pm	#4
deswradio Tetrode Join Date: Sep 2020 Location: Lewes, East Sussex, UK. Posts: 66	Re: Trio TS510 L3 choke Does it look like the original component? Is there evidence of soldering and replacement? But your 377 microhenry 3.5 ohm component sounds just right! Best wishes Des

6th Oct 2020, 5:58 pm	#5
carlos10 Pentode Join Date: Apr 2007 Location: Sint-eloois-winkel 8880, Belgium. Posts: 168	Re: Trio TS510 L3 choke hard to tell, there were several versions, but the first time i try to tune it i had fireworks in the tubes, all voltages are ok on the tubes, i wil use the 370 ùH coil now instead of the 20mH coil .