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Old 3rd December 2006, 07:50 PM   #1
fabus is offline fabus  Italy
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Default Naim nap 140 feedback resistors

Hi, I have a splendid old Naim Nap 140. I wanted to ask you if there is some known resistor that I should check. Even really those in the feedback loop? If yes, would point out me position and value?
Thanks, Fabio.
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Old 3rd December 2006, 09:31 PM   #2
lohk is offline lohk  Europe
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Why you want to check these resistors?
(The feedback resistors are those with 1% values - 5rings)
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Old 4th December 2006, 04:37 PM   #3
fabus is offline fabus  Italy
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Hi, my Nap 140 have by now 20 years. Some resistor could have lost value.....
However if I am not wrong in the my 140 the resistances are 4 strips (5%)
Hi, Fabio.
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Old 4th December 2006, 06:02 PM   #4
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What have sure lost value are all the electrolitic capacitors, not the resistors
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Old 4th December 2006, 07:02 PM   #5
lohk is offline lohk  Europe
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I second that. But without some sort of experience I would not recommend to do the changes yourself - you might get lost, and permanently damage your valuable NAP140. Let it do a Naim dealer or workshop.
Your NAP may profit from changes of the psu caps (4x BHC Aerovox 63V / 4700F) or also by changing the input and feedback caps (blue tantals, 10F and 47F) IF you will get the right caps (other types will alter the sound).

If you are still satisfied with the sound - do not change anything without proper knowledge and experience.

Klaus
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Old 4th December 2006, 07:04 PM   #6
lohk is offline lohk  Europe
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home.tele2.at/alohka/140_03.jpg
home.tele2.at/alohka/140_02.jpg
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