06-12-2023, 03:52 PM
OK. Update. "Those" capacitors have been replaced with Vishays. R39 is now a 200 ohm wirewound rated at 6 watts - which is all I had to hand. I've replaced the Gram input with a normal phono socket and installed a SPDT switch in place of the old tape output. Which means I can now switch between line input and radio without having to faff around with long reach plugs. Result - a fully functioning radio with sounds rather good to my untutored ears. Not as God made it of course but then I'm not a purist.
The only outstanding matter - touch wood - is the HT. With the new wirewound in place, it measures 275v, which Mark has suggested is a bit high. For the avoidance of doubt, this is the voltage measured after R39. The voltage drop across R39 is 15v.
The only outstanding matter - touch wood - is the HT. With the new wirewound in place, it measures 275v, which Mark has suggested is a bit high. For the avoidance of doubt, this is the voltage measured after R39. The voltage drop across R39 is 15v.
