02-25-2016, 10:45 AM
Purchased this radio in 2006 never could get it to work right. When I get in the mood I will do some more work on this thing. All caps and out of spec resistors replaced. First thing never use a AAA battery for A battery for testing. This set likes a couple of D cells to supply 1.5 volts for the A battery. For the B battery using the power supply design on Phils old radios web site. http://antiqueradio.org/bsupply.htm The no load voltage 94VDC with radio on reads 84-83VDC. Replaced the fellowing tubes with NOS 1H5GT, 3Q5GT all other tubes checked by using NOS sub no change in performance. Replace the speaker and output transformer the orginals were trash. Now to the problem if I connect a ground get a very loud buzzing sound. If I disconnet the outside ant coil from the chassie and use a ground to the outside ant coil big improvment in reception. http://www.nostalgiaair.org/Resources/231/M0011231.htm At this point very happy with the radio just do not understand what is happening with the ground. David