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See_Mos · 8th Oct 2011, 5:16 pm

I have just repaired one of these, The detector diode inside the last IF can was open circuit. An oscilloscope showed plenty of signal at the last AF117 collector but nothing at the volume control. I replace the diode with an OA91.

8th Oct 2011, 5:16 pm	#6
See_Mos Hexode Join Date: Nov 2003 Location: Ossett, West Yorkshire, UK. Posts: 482	Re: Roberts R200 schematic I have just repaired one of these, The detector diode inside the last IF can was open circuit. An oscilloscope showed plenty of signal at the last AF117 collector but nothing at the volume control. I replace the diode with an OA91.