| : Measure resistance from rectifier filament to chassis. Should be at least 5 or 6K according to the schematic. If it's low, the filament winding might be shorted to the frame or the speaker output transformer might be shorted to frame. It could be in the transformers or in the wiring. I am assuming good caps since you recapped it and the radio plays OK with no ground. : :It's a sure bet that B+ is shorted to the chassis. All you have to do is find out where : :Tony : : ::I've recapped it, replaced three missing tubes and repaired cracks in the speaker cone. It plays really well on all three bands. I did install the electrolytics correctly (not connected to chassis ground). However I can meter 256 volts DC on the chassis. If I ground the chassis it goes dead with the power plug in one way, and a very loud 60hz hum with it reversed. The 256 volts is present everywhere on the chassis, tuning capacitor, control shafts, etc. I've just started trouble shooting it. Does anyone have experience with this kind of problem? |
| Zenith 5S56 Voltage on Chassis | |
 Will Hodges | |
  TonyC | |
 TonyC | |
| TonyC | |
| Will Hodges | |
| Will Hodges | |
| will Hodges | |
| Will Hodges | |
| Thomas Dermody | |
| Thomas Dermody | |
| TonyC | |
| TonyC | |
| Will Hodges | |
| Thomas Dermody | |
| Will Hodges | |
| Billy Richardson | |
| TonyC | |
| Thomas Dermody | |
| Will Hodges | |
| TonyC | |
| Will Hodges | |
| Will Hodges | |
| Thomas Dermody | |
| Billy Richardson | |
| Thomas Dermody | |
| TonyC | |
| Rick Skowronek | |
| Thomas Dermody | |
| Donnie Land |
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