Hello All,
I bought Norge 1000 amplifier and New Millenium speakers set last year Jan/Feb for around 27,000 Rs including remote. Connected to Phillips DVD Player it sounds good,clear and is a value for money product. I wanted a professional amp that sounded crystal clear at low volumes, had a hefty budget but settled for Norge.
Being electronically curious and hobbyist I had to open it to see why the heatsink got hot quickly and replaced it with a large 6mm thick copper plate, the length of the amp at the back to which I fused the aluminium heatsink with thermal paste and bolts. It works fine. The copper plate itself takes very long to get warm and I hardly keep the volume beyond 10 'O' clock as I have it in my bedroom. It only gets tested/noticed when old trance music is played.
Something has gone wrong with it now. The only incident I remember that happened was that the volume control was mistakenly turned to the max position and without noticing I had powered on the amp and with the DVD playing classical music, sent a blast of energy out of the speakers momentarily before I immediately shut off the amplifier. The volume control gave away long back as it sends background noise when turned.
After this episode, I noticed, the amp lost its balance and the left channel sounded more than the right channel. I had to wire and connect the tone defeat points on the pre-amp pcb to correct this. The bass control knob also appeared faulty as it lost its finesse when turned which I replaced with a locally purchased Rs.45 B100K pot. However the amp is not sounding the same but it plays.
I do not know how to check each component to figure out which one is faulty though I have a digital multimeter nor there are any visible faults/burns but I suspect something may have gone faulty in the power filter pcb or the pre-amp pcb.
I had ordered for 3 opamps LME49990 MA and a Bourns pot 1822848 (to replace the lesser bass pot) from kitsnspares today which I will get in two weeks time. I heard a lot of positive liking towards 49990 and hence wanted to try it on the pre-amp.
I am also considering to join a group buy for the Pass B1 preamp kit to replace the pre-amp section for much clearer and great music. It is a very exiting project and I keep reading about its progress on this forum. Great job all.
I can only find minimal time on weekends to support my electronics hobby.
I am thinking what else to do. If any one can please provide some advice, I would immensely appreciate your help.
Best Regards,
Laksh
I bought Norge 1000 amplifier and New Millenium speakers set last year Jan/Feb for around 27,000 Rs including remote. Connected to Phillips DVD Player it sounds good,clear and is a value for money product. I wanted a professional amp that sounded crystal clear at low volumes, had a hefty budget but settled for Norge.
Being electronically curious and hobbyist I had to open it to see why the heatsink got hot quickly and replaced it with a large 6mm thick copper plate, the length of the amp at the back to which I fused the aluminium heatsink with thermal paste and bolts. It works fine. The copper plate itself takes very long to get warm and I hardly keep the volume beyond 10 'O' clock as I have it in my bedroom. It only gets tested/noticed when old trance music is played.
Something has gone wrong with it now. The only incident I remember that happened was that the volume control was mistakenly turned to the max position and without noticing I had powered on the amp and with the DVD playing classical music, sent a blast of energy out of the speakers momentarily before I immediately shut off the amplifier. The volume control gave away long back as it sends background noise when turned.
After this episode, I noticed, the amp lost its balance and the left channel sounded more than the right channel. I had to wire and connect the tone defeat points on the pre-amp pcb to correct this. The bass control knob also appeared faulty as it lost its finesse when turned which I replaced with a locally purchased Rs.45 B100K pot. However the amp is not sounding the same but it plays.
I do not know how to check each component to figure out which one is faulty though I have a digital multimeter nor there are any visible faults/burns but I suspect something may have gone faulty in the power filter pcb or the pre-amp pcb.
I had ordered for 3 opamps LME49990 MA and a Bourns pot 1822848 (to replace the lesser bass pot) from kitsnspares today which I will get in two weeks time. I heard a lot of positive liking towards 49990 and hence wanted to try it on the pre-amp.
I am also considering to join a group buy for the Pass B1 preamp kit to replace the pre-amp section for much clearer and great music. It is a very exiting project and I keep reading about its progress on this forum. Great job all.
I can only find minimal time on weekends to support my electronics hobby.
I am thinking what else to do. If any one can please provide some advice, I would immensely appreciate your help.
Best Regards,
Laksh