HV transformers: Difference between revisions
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In many classic scopes, the high voltage transformer that supplies the cathode, blanking, and anode voltages has a tendency to break down. | In many classic scopes, the high voltage transformer that supplies the cathode, blanking, and anode voltages has a tendency to break down. | ||
This is mostly because of aging of the potting material used for the high-voltage windings. | This is mostly because of aging of the potting material used for the high-voltage windings. | ||
Currently the only options when this happens are to find a similar transformer from another scope, | |||
Currently, the only options when this happens are to find a similar transformer from another scope, | |||
or to get a rewound transformer. | or to get a rewound transformer. | ||
The same HV transformer, part number 120-0308, is used in the [[543|543B]], [[544]], [[545|545B]], [[546]], and [[547]]. | The same HV transformer, part number 120-0308, is used in the [[543|543B]], [[544]], [[545|545B]], [[546]], and [[547]]. | ||
Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results. | Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results. | ||
[[Category:Repair issues]] | |||
Revision as of 11:34, 28 August 2014
In many classic scopes, the high voltage transformer that supplies the cathode, blanking, and anode voltages has a tendency to break down. This is mostly because of aging of the potting material used for the high-voltage windings.
Currently, the only options when this happens are to find a similar transformer from another scope, or to get a rewound transformer.
The same HV transformer, part number 120-0308, is used in the 543B, 544, 545B, 546, and 547. Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results.