Replacing caps in my Yammie ca-2010 , the caps on the amp boards ( x 8 ) are 1uf 80v , I’ve measured one that I’ve removed and it measures 1.16uf , I can only find replacements that have a +/- of 20% so is it even worth changing them ?
Perhaps check also the ESR and leakage of a few to see if there is much difference.
Have yet to see an electrolytic capacitor used in a critical filter.
Although the smallest ones are typically the first to dry up, they are likely fine.
Although the smallest ones are typically the first to dry up, they are likely fine.
Once you have the board on the table then I would recommend replacing them . 1uF lytics are not wine that gets better with years.
What to replace them with depends on where they are used - the 4 ones on your photo are - judging by the service manual - on the power rails of the power amplifier stage so I would replace these with 10uF ones if this was my device.
What to replace them with depends on where they are used - the 4 ones on your photo are - judging by the service manual - on the power rails of the power amplifier stage so I would replace these with 10uF ones if this was my device.
Appreciate the advice but I tend to think that this beautiful amplifier has survived untouched for almost 50 years with the 1uf caps so I won’t change the values now .