| Hi Poston Thank you for your response. You must be pretty "in tune" when it comes to old radio sets? The Zenith G725 does not have any of the tubes glowing. I suppose I can order some tubes. What do you think? Thank you for telling me about the hot chassis. I will be careful. When the electical plug is in the socket one way I do not get a shock until the set is turned on. When I reverse the plug in the wall socket the set will shock when the set is off, and then when the set is turned on the set is no longer hot. The RPC set seems to work pretty well according to my book.(Wich does not necessarily mean much.)I can tell by the way this set works that it is not a superhetrodyne. At times I can get a strong radio station frequency that can bleed in through the full range of the tuning cap. Not always though. The tubes that are in the RPC set are as follows 1A7G, 1N5G, 1H5G, and 1Q5G. Thank you again and have a great day. Shane :Hi Shane, :Let's take the Zenith first: Chassis 7G01 was used in model G725. You can find the schematic and service data here on NostalgiaAir. From the "Resources" section click on "Zenith", then from the list choose your model "G725". The reason it is shocking you is due to the design of the radio. This is an AC/DC set with a "hot chassis". Depending upon the position of the line cord plug in the receptacle, there is a 50/50 chance the chassis will be hot regardless whether the power switch is ON or OFF. The use of an isolation transformer is highly recommended when servicing a radio like this one. If one is not available, proceed with extreme caution and avoid all contact with the metal chassis when the radio is plugged in. There can be many reasons why it is not working, give us a little more info and we can help you track down the problem. To begin with, are the tubes lighting up? : :Regarding your Radio Products Corp. set, the number you mention is most likely a serial number, not a model number. If you can post the tube numbers we can probably help you determine the model number and find the schematic. : :Poston : : :: My name is Shane. I am certainly not a radio or electronics repair man, but yet in my spare time I like to mess with old radios, especially those that were more of a part of rural life before commercial power was introduced. In the past I got lucky and simply replaced the tubes in a 1937 Delco 32 volt and got it to work. :: Now I have a battery powered set made by Radio Products Corp that I can't find a schematic for. All I have for numbers is a S/N A308871. It is a 4 tube radio. The radio is working. :: I also have a Zenith AM/FM that does not work and is shocking me. I would like to find a schematic for it. All I have is a chassis #7G01. Could it be that since the set is shocking me that I should start replacing capacitors? |
| Radio Products Corp. & Zenith project (schematic) | |
 Shane | |
 Poston Drake | |
| Shane | |
| Poston Drake | |
| Poston Drake | |
| Shane Slivka |
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