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Capacitor  & diode replacements
Capacitor  & diode replacements
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Old 20th February 2009, 11:44 AM   #1
dognut is offline dognut  United States
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Join Date: Oct 2007
Default Capacitor & diode replacements

Hello to all.Getting ready to replace most of the caps on my 40 yr. old sansui 1000a tube reciever. I know I have to stay as close to the value as possable, but on the voltage side,can I replace the 100,200,400 volt caps with 600 volt replacements? And on the diodes it looks like the largest ones are used in the voltage bridge # 1n4007.there are a dozen others in the chassie, can I change them all to the 1n4007? Thanks, tom
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Old 20th February 2009, 11:52 AM   #2
AndrewT is offline AndrewT  Scotland
Join Date: Jul 2004
Location: Scottish Borders
are 1n4007 the 1000Vdc version?

Then yes, if your highest voltage <900Vdc.

It is always safe to use a higher rated voltage capacitor than a lower rated one.

But, as the voltage rating goes up so does cost and volume. Will 600Vdc caps fit the space available?

Check to see if any of the caps are AC rated or "X" or "Y" rated.

You MUST use X or Y replacements in those locations.

Why are you changing all the caps and diodes?
regards Andrew T.
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Old 20th February 2009, 11:59 AM   #3
poynton is offline poynton  United Kingdom
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Join Date: Mar 2005
Location: UK
1n4007 are rectifier diodes and will not be suitable for replacing the diodes in the receiver section.

If it ain't broke, break it !! Then fix it again. It's called DIY !
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