I have a sonance 1250 mk 2 that blows fuses as soon as it's powered on.
Apparently Sonance typically only does repairs at the factory, they do not publish service manuals. The problem is that round trip shipping alone would probably cost more than the amp is worth.
I'm looking for advice on what to do with this amplifier. It would be a shame if it ended up in the landfill. I have some electronics skills, but without a schematic I would not know where to start with fixing it myself.
Apparently Sonance typically only does repairs at the factory, they do not publish service manuals. The problem is that round trip shipping alone would probably cost more than the amp is worth.
I'm looking for advice on what to do with this amplifier. It would be a shame if it ended up in the landfill. I have some electronics skills, but without a schematic I would not know where to start with fixing it myself.
I have a similar issue and need a service manual for the Mk.1 in my case fuses are ok, but a couple of resistors in the PSU have corroded and fallen off, the small transformer that powers this circuit powers the main transformer, I an not getting any voltages anywhere...
I am having trouble getting a schematic for the 1250 but in practical terms -
First -- is it the INPUT fuses or the OUTPUT fuses that are blown -IE - short circuit in transformer windings / rectifier -eliminate the power section first .
Second -- if okay go straight to the output devices and measure for S/C,s .
Blown fuses on switch on would eliminate the audio input circuit with low current devices .
Please take into account I am working totally blind here without a circuit diagram, but logically those are the two starting areas.
First -- is it the INPUT fuses or the OUTPUT fuses that are blown -IE - short circuit in transformer windings / rectifier -eliminate the power section first .
Second -- if okay go straight to the output devices and measure for S/C,s .
Blown fuses on switch on would eliminate the audio input circuit with low current devices .
Please take into account I am working totally blind here without a circuit diagram, but logically those are the two starting areas.