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SKA6516: Difference between revisions
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Changing my previous edit so it matches with the recent edits.
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(Changing my previous edit so it matches with the recent edits.) |
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[[:User:Qfissler|I've]] listed eighteen from the 475 Service Manual in the [[475/Repairs#Problematic Transistors|475 Repairs]] page. | [[:User:Qfissler|I've]] listed eighteen from the 475 Service Manual in the [[475/Repairs#Problematic Transistors|475 Repairs]] page. | ||
'''Suitable | '''Suitable Modern Replacement''' | ||
The 475 Service manual lists some of the transistors with alternatives, and some without - so I'd be careful to check that some need to be closer in spec than others. | The 475 Service manual lists some of the transistors with alternatives, and some without - so I'd be careful to check that some need to be closer in spec than others. | ||
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It's not very hard to identify these transistors. | It's not very hard to identify these transistors. | ||
They will have a 151-367 number on them and when tested will show a reverse polarity protection diode, which should not be there. | They will have a 151-367 number on them and when tested will show a reverse polarity protection diode, which should not be there. | ||
These typically have a 100% failure rate so you should replace them with the recommended transistor listed in the | These typically have a 100% failure rate so you should replace them with the recommended transistor listed in the "Suitable Modern Replacements" section. | ||
{{MissingSpecs}} | {{MissingSpecs}} | ||