Dear folks,
I took this amp from my late father. I want to check the condition of the amp and adjust input voltage from 110V to 220V.
I've checked transformer wiring and it is not difficult. However, I am concerned that there may be other effects after changing the voltage.
CounterPoint NPS-100A has three point of trim adjust. But I don't have any document. How can I get a service manual for this amp?
Or does this amp have a similar circuit to the NPS-200? I only have schematic diagram of NPS-200.
Any comment would be very helpful.
Stanley
I took this amp from my late father. I want to check the condition of the amp and adjust input voltage from 110V to 220V.
I've checked transformer wiring and it is not difficult. However, I am concerned that there may be other effects after changing the voltage.
CounterPoint NPS-100A has three point of trim adjust. But I don't have any document. How can I get a service manual for this amp?
Or does this amp have a similar circuit to the NPS-200? I only have schematic diagram of NPS-200.
Any comment would be very helpful.
Stanley
Hi Stanley,
I Googled "counterpoint sa-100a schematic" and got candidate images. I suggest comparing your amp with these images to get a lead for more data.
Good luck!
I Googled "counterpoint sa-100a schematic" and got candidate images. I suggest comparing your amp with these images to get a lead for more data.
Good luck!
Thanks a lot BSST,
It's a good idea. I already have a schematic file of SA-100A. I'll compare both circuits carefully. But I'm looking for the schematic of NPS-100A also.
Comparing the PCB pictures, the two amplifiers have similar configurations, but the output stages are quite different.
Stanley
It's a good idea. I already have a schematic file of SA-100A. I'll compare both circuits carefully. But I'm looking for the schematic of NPS-100A also.
Comparing the PCB pictures, the two amplifiers have similar configurations, but the output stages are quite different.
Stanley
https://www.diyaudio.com/community/...rpoint-schematics-i-can-probably-help.387328/
you may find some help here
you may find some help here