Monday, January 30, 2012
Sony TA-1055 Integrated Stereo Amplifier
At a very under-rated 20 watts per channel, this DC integrated amplifier is a true gem. This is actually the second time I've had one of these and I'm still in love with it's design. A warm sounding amplifier, it really can deliver in the sound department.
It's condition when purchased was actually not too bad. There was some corrosion on the chrome, and on the slide switches and the usual build up of dirt. Internally it was actually quite clean for a nearly 40 year old amplifier some capacitors were showing a bit of bulging and the DC offset was measuring a bit high on the right side (25mV vs 3.2 on the left) however nothing that could not be solved.
Pictures before restoration:
Internals before servicing:
Mix of old Nichicon and Elna capacitors:
The capacitors were replaced with my usual choice of Panasonic TS-HA for the main filter capacitors and Panasonic AM for the rest. The filter capacitors were upgraded from 3300uF to 4700uF. This posed a problem at the end where I did not realise that I had enough clearance for the top cover. You'll actually see in the finished photos that the wood cover is slightly higher on the left hand side than on the right (this is when I actually discovered this slight issue). The easy fix was to burr a slight indent on the underside of the wood cover, fits perfectly now.
Anyway, enjoy the finished results!