Hello All,
I've started to have a look at my Sony TA-1010 amplifier, to see if I can sort out the noisy phono circuit.
Playing through all of the other inputs, it is absolutely fine. But when I select phono 1 or 2, the music comes out crackly / distorted.
I've done a quick visual check of the capacitors on the pre-amp and power amp board. None are throwing up any issues that I can tell.
Also I have tried to find information around various sites and some point toward faulty transistors. Apparently the type of transistor on the pre-amp are prone to failure. I happened to have some new equivalent spares lying around, so fitted those 4. However, it didnt make any difference.
So instead of chucking more parts at it, i wondered if anyone would have any ideas of where to go next?
manual is linked at
https://audio-circuit.dk/downloads/s...010-int-sm.pdf