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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Hello!
I have a over 10-year old Grundig model CDC477 (5 cd changer) with a dead transformer and i need to replace it. The problem is that I don't know the exact mA and V ratings for it. I tried to contact Grundig and AMC about it but they haven't answered. The transformer is made by AMC and it has the following markings: 1st line: AMC-logo and "95" "30" 2nd line: "99.2139302FM" 3rd line: "3104 113 70491" The input voltage is 230V. The transformer has two outputs which each have 3 wires. The first has white, green, white. The second has blue, red, red. These wires go to some sort of circuit with mainly electrolytic capasitors (16V and 50V types) and diodes. From this circuit leaves 7 wires which are marked to be +10V, -10V, +3V9, GND, -27V, 4V8~ and 4V8~ Those 4V8 AC lines come straight through the circuit I described above, so one of the transformer outputs is 4V8 AC. But what might be the other output? This really sounds like a puzzle, but thanks in advance ;-) |
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