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

HBWOODY · 20th Feb 2021, 8:43 pm

I have now put the good amplifier board back into the working VCM163 as I did not want to damage it while working on the mA/V switch on the non working VCM163.
I now have two problems to solve.
1. A faulty amplifier board.
2. A problem in the mA/V switch area.
I did test a valve in the faulty VCM163 (when it had the good amplifier board installed) and the result was what it should have been if I took into consideration the the mA/V meter was reading 1 (not zero) before testing the valve. I will try and find where that reading of 1 is coming from but the faulty amplifier board must be mended first.
I hope all the above is not too confusing.
Haydn

20th Feb 2021, 8:43 pm	#44
HBWOODY Pentode Join Date: Mar 2020 Location: Bodmin, Cornwall, UK. Posts: 212	Re: VCM 163 No.1. Problem while calibrating I have now put the good amplifier board back into the working VCM163 as I did not want to damage it while working on the mA/V switch on the non working VCM163. I now have two problems to solve. 1. A faulty amplifier board. 2. A problem in the mA/V switch area. I did test a valve in the faulty VCM163 (when it had the good amplifier board installed) and the result was what it should have been if I took into consideration the the mA/V meter was reading 1 (not zero) before testing the valve. I will try and find where that reading of 1 is coming from but the faulty amplifier board must be mended first. I hope all the above is not too confusing. Haydn