Philco model 18 (code 121) - HELP!
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Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Pith, something is wrong with your measuring. The only measurements that were somewhat close are the filaments (A/C). All DC measurements (the balance of them) are sky high! Of interest are the cathode to ground measurements on the 42s for example. These set at chassis ground and yet your getting 2.8V on them. Not possible. As a question, are you measuring these tube voltages with the tubes in? Obviously the 80 rectifier was in to provide DC voltage. Note in your voltage chart that the chart is based on measurements from the cathode as the minus point for the meter, not chassis ground.
Spot try a few measurements again and see how they compare to your original posting above. Your obtaining some high voltage readings that the power supply is incapable of making under load.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
Messages In This Thread
RE: Philco model 18 (code 121) - HELP! - by jerryhawthorne - 04-22-2013, 02:16 PM
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