Late model Quad 303 (3rd unit)

I managed to purchase a Quad 303 with a IEC power socket and the large capacitors facing upwards. Such units were produced between 1980-1985.

Front

So far, have not tested the usability of the unit as I need to take out the Quad 33 to partner it. It does power up and the heatsink does warm up after left power for a few minutes.

Thus I decided to open up the unit to view it's state.

Before clean-up

After cleanup

Before cleanup the layer of dust was about 2-3mm with a few feathers in the unit??? Had to remove the heatsinks to vacuum the boards. Rest of the unit was dusty enough.

Capacitor tops after vacuuming

When tested, the unit works fine without issues.