The primary on the mains transformer of my Technics SU-X840 amp is open-circuit. The transformer has a part number of SLT5M505, but appears now to be discontinued. So I am looking to replace it with one or more alternatives. The service manual tells me the transformer has three secordaries: 0-4.3V, 12.6-0-12.6V, and 0-53.4V with an earthed centre tap. Unfortunately it does not give the power ratings, but the transformer weights around 2-3Kg. The manual says with no signal input the primary should draw 85-140Ma, and the whole unit is fused at 1A. The DIN power rating of the amp is 2x50W.
Any advice on obtaining suitable alternative transformers sought. And advice on what power ratings I should go for in each of the secondaries if I choose to replace it with separate transformers. Fortunately,there is quite a lot of space in the unit.
Any advice on obtaining suitable alternative transformers sought. And advice on what power ratings I should go for in each of the secondaries if I choose to replace it with separate transformers. Fortunately,there is quite a lot of space in the unit.