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

Valve'n'vinyl · 16th Feb 2017, 10:50 am

Hello Peter,
Yes, sorry my brain was not working last night. Long day broken down car etc... Yes it does sound like the power supply. I have not opened it up as of yet but I could almost guarantee it is a switch mode job. I suppose I could try changing the electrolytics on the power side. I am using a Scart lead from Freeview box to modulator, modulator RF out to TV. I have used the same freeview box with a video recorder as an RF modulator but the video recorder had to go as it was getting rather warm with a freeview box and a DVD player sat on top of it in a cabinet.

16th Feb 2017, 10:50 am	#3
Valve'n'vinyl Pentode Join Date: Sep 2006 Location: Scarborough , North Riding of Yorkshire Posts: 202	Re: TV Modulator noise .... Hello Peter, Yes, sorry my brain was not working last night. Long day broken down car etc... Yes it does sound like the power supply. I have not opened it up as of yet but I could almost guarantee it is a switch mode job. I suppose I could try changing the electrolytics on the power side. I am using a Scart lead from Freeview box to modulator, modulator RF out to TV. I have used the same freeview box with a video recorder as an RF modulator but the video recorder had to go as it was getting rather warm with a freeview box and a DVD player sat on top of it in a cabinet.