Ponchobrown
New Member
Hey guys I was hoping to get some help with a repair job. I just bought this receiver a month ago so I'm pretty bummed to be having issues already. As the title reads it is a NIkko NR 1219 and slowly over a day or two the right channel would go very quiet and be very distorted, Now it is constantly like this. If i turn the balance all the way right and turn up the volume you can make out the music but with considerable distortion and only quietly. I switched the speaker cables, switched the phono cables and the right channel continues like this for A and B channels. When I run it in tuner with mono selected then both channels work.
I opened it up to see if any fuses or anything jumped out and found a group of VERY hot resistors and "zener diodes".
In the last picture you should be able to see the discoloration on the board around this group. It looks clearly slightly burnt, not quite black. Could this be the cause of a single channel going out? Are there other more likely culprits?
Here is a link to the section of the schematic if that is helpful. The type came out to small to see when it is uploaded though AK.
http://imgur.com/OX7WR9f
http://imgur.com/bGu1Q51
In this picture the hot components are ZD831 ZD832 R834 and R835 on the right side.
Does anyone have any clue as to what direction I should go with this? Is it trash? Seems like easy enough components to solder which i am pretty comfortable doing but not sure if this is actually the root cause of this issue.
The full manual can be found here
http://www.hifiengine.com/manual_library/nikko/nr-1219.shtml
I opened it up to see if any fuses or anything jumped out and found a group of VERY hot resistors and "zener diodes".
In the last picture you should be able to see the discoloration on the board around this group. It looks clearly slightly burnt, not quite black. Could this be the cause of a single channel going out? Are there other more likely culprits?
Here is a link to the section of the schematic if that is helpful. The type came out to small to see when it is uploaded though AK.
http://imgur.com/OX7WR9f
http://imgur.com/bGu1Q51
In this picture the hot components are ZD831 ZD832 R834 and R835 on the right side.
Does anyone have any clue as to what direction I should go with this? Is it trash? Seems like easy enough components to solder which i am pretty comfortable doing but not sure if this is actually the root cause of this issue.
The full manual can be found here
http://www.hifiengine.com/manual_library/nikko/nr-1219.shtml