imarks
Ian Marks
Hi
After a recent power cycle my system came up with distortion in one channel (NAC102/HiCap/NAP250). I eliminated my source as it was fine through my Nait2 and after a bit of mucking around I've isolated it to the NAP250 as when I connect a Squeezebox directly to the NAP250 I still hear the distortion.
The distortion sounds a bit like crunch or overdrive that you get from a guitar amp so I'm guessing it's clipping. At low volumes the distortion seems to follow the pulse of the music i.e. comes and goes with bass drum/bass gutar notes but at higher volumes it's distorted all the time. Could it be the regulator board? If not any ideas for likely things to look for?
As far as I know the amp has never been serviced so it's probably long overdue a re-cap. Anyone know the current going rate for a re-cap or a rough idea of the cost of parts to do it myself?
I'm considering taking a look myself. I'm pretty sure I could replace capacitors but don't have much in the way of test kit so diagnosing the fault if it isn't just a re-cap might be more difficult. To take the sleeve off is it a simple matter of unscrewing the 4 feet and the six allen head bolts on the bottom of the amp and sliding the inards out?
Thanks
--Ian
After a recent power cycle my system came up with distortion in one channel (NAC102/HiCap/NAP250). I eliminated my source as it was fine through my Nait2 and after a bit of mucking around I've isolated it to the NAP250 as when I connect a Squeezebox directly to the NAP250 I still hear the distortion.
The distortion sounds a bit like crunch or overdrive that you get from a guitar amp so I'm guessing it's clipping. At low volumes the distortion seems to follow the pulse of the music i.e. comes and goes with bass drum/bass gutar notes but at higher volumes it's distorted all the time. Could it be the regulator board? If not any ideas for likely things to look for?
As far as I know the amp has never been serviced so it's probably long overdue a re-cap. Anyone know the current going rate for a re-cap or a rough idea of the cost of parts to do it myself?
I'm considering taking a look myself. I'm pretty sure I could replace capacitors but don't have much in the way of test kit so diagnosing the fault if it isn't just a re-cap might be more difficult. To take the sleeve off is it a simple matter of unscrewing the 4 feet and the six allen head bolts on the bottom of the amp and sliding the inards out?
Thanks
--Ian