03-28-2014, 06:26 AM
Todd;
Item 65 is a dual .01 capacitor with the capacitors inside the bakelite enclosure. There are a number of threads on how to remove the internal parts that are potted in a black wax or tar-like substance. I restored a 40-201 which is similar and has the same part on the AC input circuit. These parts are particular safety related items and should be replaced with modern parts rated for AC input circuitry. The modern replacements are much safer for fire and smoke plus shock hazard issues. Since they are not visible unless the bakelite enclosure is removed and viewed from its bottom, most of us do not bother to repot these capacitors. It will make replacement in the future that much easier and no one will know unless they remove the part from the chassis again.
Definitely clean the tube pins and sockets. Usually the removal and reinsertion of the tubes in the sockets accomplishes some cleaning. However a thorough cleaning of the tube pins will certainly help. Deoxit and some mild abrasive materials can be used for cleaning the tube pins. Scotchbrite pads can be used in the cleaning process, but are not the only thing that can be used.
Check for reasonable voltage readings on the plate and screen grids of the RF and IF tubes. Check the Oscillator tube voltage readings. Record your readings and post them here and we can help you with further troubleshooting. You may want to also check resistance readings of the various RF transformers and coils. Be sure to make resistance readings with the set turned off and record those results and report them here too.
Joe
Item 65 is a dual .01 capacitor with the capacitors inside the bakelite enclosure. There are a number of threads on how to remove the internal parts that are potted in a black wax or tar-like substance. I restored a 40-201 which is similar and has the same part on the AC input circuit. These parts are particular safety related items and should be replaced with modern parts rated for AC input circuitry. The modern replacements are much safer for fire and smoke plus shock hazard issues. Since they are not visible unless the bakelite enclosure is removed and viewed from its bottom, most of us do not bother to repot these capacitors. It will make replacement in the future that much easier and no one will know unless they remove the part from the chassis again.
Definitely clean the tube pins and sockets. Usually the removal and reinsertion of the tubes in the sockets accomplishes some cleaning. However a thorough cleaning of the tube pins will certainly help. Deoxit and some mild abrasive materials can be used for cleaning the tube pins. Scotchbrite pads can be used in the cleaning process, but are not the only thing that can be used.
Check for reasonable voltage readings on the plate and screen grids of the RF and IF tubes. Check the Oscillator tube voltage readings. Record your readings and post them here and we can help you with further troubleshooting. You may want to also check resistance readings of the various RF transformers and coils. Be sure to make resistance readings with the set turned off and record those results and report them here too.
Joe
