Hi,
I'm trying to repair a good old A-676 Pioneer, completely dead.
The primary winding of the transformer is open, and I suppose that the internal thermal fuse is somehow broken.
Any suggestion about the way to replace it?
In case of mission impossible, I wish to replace the transformer itself, but the service manual and the schematics I've found don't contain its crucial data (especially, power in VA and secondary windings voltages).
I know that the primary winding voltage is 220v, the 2 filter capacitors are labelled 12,000uF/56v each and the maximum power consumption declared is 650 watt. So, I think that a 600VA 220v/35+35v transformer would be enough for a 70+70w amp, but I'm not sure at all.
Anyone does know something more about?
Many thanks in advance, Paolo
I'm trying to repair a good old A-676 Pioneer, completely dead.
The primary winding of the transformer is open, and I suppose that the internal thermal fuse is somehow broken.
Any suggestion about the way to replace it?
In case of mission impossible, I wish to replace the transformer itself, but the service manual and the schematics I've found don't contain its crucial data (especially, power in VA and secondary windings voltages).
I know that the primary winding voltage is 220v, the 2 filter capacitors are labelled 12,000uF/56v each and the maximum power consumption declared is 650 watt. So, I think that a 600VA 220v/35+35v transformer would be enough for a 70+70w amp, but I'm not sure at all.
Anyone does know something more about?
Many thanks in advance, Paolo