Hi,
I have acquired an RCA model 400 Junior in very nice condition but the 1345-C amplifier needs work! The insulation on the main power cable had completely deteriorated so I've replaced it with a grounded 3 prong plug. I plan to install an isolation transformer in the amplifier as it's the version that runs a pair of 50L6 power tubes, a 12AY7 in the preamp and a 6SL7 phase inverter without a power transformer ie a widowmaker . The service manuals I've found so far lack the pages that contain the schematic for this model. It's on Pages 54-57 of the manual stamped with TITANIC on the film-tech site that ends on page 47! If anyone has the other pages I'd very much appreciate it! I've been restoring tube amplifiers for a few years now and am comfortable working on them so you can be confident that you will not be responsible for my death by supplying the missing pages
... any help with this would be greatly appreciated. Happy new year to all! John.
I have acquired an RCA model 400 Junior in very nice condition but the 1345-C amplifier needs work! The insulation on the main power cable had completely deteriorated so I've replaced it with a grounded 3 prong plug. I plan to install an isolation transformer in the amplifier as it's the version that runs a pair of 50L6 power tubes, a 12AY7 in the preamp and a 6SL7 phase inverter without a power transformer ie a widowmaker . The service manuals I've found so far lack the pages that contain the schematic for this model. It's on Pages 54-57 of the manual stamped with TITANIC on the film-tech site that ends on page 47! If anyone has the other pages I'd very much appreciate it! I've been restoring tube amplifiers for a few years now and am comfortable working on them so you can be confident that you will not be responsible for my death by supplying the missing pages
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