UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Frankcawthron · 19th Jun 2021, 8:49 pm

Hi. I have an Ekco U243/1 radio which works but it only tunes in strong signals on MW and FM. When I turn the tuning knob I get a lot of crackles through the speaker, the sound is not bad plenty of volume but a little distorted. I have cleaned the wave change contacts and the volume control as well as all the valve bases and pins; and generally cleaned both chassis and cabinet

I replaced capacitor C42 with a 0.1uF instead of a 0.01uF because I didn’t have anything else. This is the grid coupling capacitor for the output valve, but it didn’t make any difference to the overall sound quality.

I haven’t replaced any shooting caps don’t have any, would this be the likely cause of the problems? The hum level through the speaker is OK.

Any ideas welcome.

19th Jun 2021, 8:49 pm	#1
Frankcawthron Diode Join Date: Jun 2021 Location: Wakefield, West Yorkshire, UK. Posts: 1	Ekco u243/1 Hi. I have an Ekco U243/1 radio which works but it only tunes in strong signals on MW and FM. When I turn the tuning knob I get a lot of crackles through the speaker, the sound is not bad plenty of volume but a little distorted. I have cleaned the wave change contacts and the volume control as well as all the valve bases and pins; and generally cleaned both chassis and cabinet I replaced capacitor C42 with a 0.1uF instead of a 0.01uF because I didn’t have anything else. This is the grid coupling capacitor for the output valve, but it didn’t make any difference to the overall sound quality. I haven’t replaced any shooting caps don’t have any, would this be the likely cause of the problems? The hum level through the speaker is OK. Any ideas welcome.