Ekco U353 - UK Vintage Radio Repair and Restoration Discussion Forum

Dorian27 · 3rd Jun 2021, 2:57 pm

Can any one please tell me which is the coupling capacitor on this model. Also what I need to replace it in power and value type etc. If you can please I bought this works OK but I like to replace coupling capacitor I was told it is a good thing to do on an old model

Cobaltblue · 3rd Jun 2021, 3:05 pm

In the manufacturers info its C51

It's often called "that cap"

A 400V 0.01uF I would use a modern Poly Cap

Something like this would be OK in this position:

https://www.ebay.co.uk/itm/301127883...r=600224687083

See snips

Cheers

Mike T

paulsherwin · 3rd Jun 2021, 3:09 pm

I vaguely remember that this radio uses a ceramic cap in that position - if so, it probably doesn't need changing. Check for +ve volts on pin 2 of the UL84.

Nuvistor · 3rd Jun 2021, 3:42 pm

They did start to use ceramics but mainly in the RF/IF stages, I think will be a TCC MetalMite type, I.e. paper.
If it is ceramic then yes just test it, if other types then replace, the one in post #2 is fine but it may be an easier fit to use an axial type rather than radial.

dazzlevision · 3rd Jun 2021, 4:04 pm

This might be a better choice, with axial leads:

https://www.cricklewoodelectronics.com/CFH10NH.html

I try to avoid radial leads, as they don’t look as nice in vintage hand wired chassis such as this radio.

Howver, the radial leaded type will do, as long as it has a dc working voltage rating of at least 400 Volts.

3rd Jun 2021, 2:57 pm	#1
Dorian27 Heptode Join Date: Jun 2018 Location: Carmarthenshire, Wales, UK. Posts: 569	Ekco U353 Can any one please tell me which is the coupling capacitor on this model. Also what I need to replace it in power and value type etc. If you can please I bought this works OK but I like to replace coupling capacitor I was told it is a good thing to do on an old model

3rd Jun 2021, 3:09 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,969	Re: Ekco U353 I vaguely remember that this radio uses a ceramic cap in that position - if so, it probably doesn't need changing. Check for +ve volts on pin 2 of the UL84.

3rd Jun 2021, 3:42 pm	#4
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Ekco U353 They did start to use ceramics but mainly in the RF/IF stages, I think will be a TCC MetalMite type, I.e. paper. If it is ceramic then yes just test it, if other types then replace, the one in post #2 is fine but it may be an easier fit to use an axial type rather than radial. __________________ Frank

3rd Jun 2021, 4:04 pm	#5
dazzlevision Dekatron Join Date: Sep 2003 Location: Near Swindon, North Wiltshire, UK. Posts: 3,621	Re: Ekco U353 This might be a better choice, with axial leads: https://www.cricklewoodelectronics.com/CFH10NH.html I try to avoid radial leads, as they don’t look as nice in vintage hand wired chassis such as this radio. Howver, the radial leaded type will do, as long as it has a dc working voltage rating of at least 400 Volts.

3rd Jun 2021, 3:05 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,878	Re: Ekco U353 In the manufacturers info its C51 It's often called "that cap" A 400V 0.01uF I would use a modern Poly Cap Something like this would be OK in this position: https://www.ebay.co.uk/itm/301127883...r=600224687083 See snips Cheers Mike T Attached Thumbnails __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk