Hi all ,my main rig is sounding off. The hicap is feeding a recently serviced 250 and 72
The sound im getting is generally weak and anemic is my best way of describing it, wondering if hicap needs a fettle
Regards
The Hicap powers the 72, signal goes through the Hicap to the 250.
When was the 250 last serviced as the sound you are getting I think more aligns to this.
12 month ago at naim
That’s good to know. Do you know when the Hicap was last serviced?
How often does Naim gear need to be serviced if left on 24/7?
The same as if it is off 24/7. Capacitors degrade whether they are in use or not.
not necessarily, heat is the enemy
The FAQ might help here;
Hicap over 10 years at least ,what are the signs of a failed hicap on the 72 ?
I would just send it in, and the NAC72 too. Then you will no longer have doubts.
If it has failed then it won’t work. If it needs a service then it will most likely manifest as impaired sound performance; it can range from a sense of thickness, slowness to hardness and brightness.
Electrolytic caps degrade whether used or not. Heat accelerates the degradation. It’s a bit more complex than simple drying out; there is a chemical change. But drying out of the electrolyte also occurs. They can be inspected and tested/measured but still sound poor. They are low-cost items that are not intended to last forever.
A failed cap in a Hicap could go pop if it fails with a dead short. Ive seen larger ( non hifi ) capacitors fail dramatically. Bits of dead cap inside electrical enclosures; makes quite a mess.
A dead short type failure is likely to also take out the rectifer in the hicap also.
I agree, i had a 72/140/Hi-cap which was not used stored away for about 15 years. When i came to use it again 72 and 140 were fine, but the hi-cap popped. Four tantalum capacitors and one voltage regulator had to be replaced.
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