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A video showing the disassembly of Pioneer SX-434 stereo receiver (1974) and the replacement of the dial pointer lamp. Although I don't replace the dial lamps and the stereo indicator lamp, I show how to get to them (it's easy).
Lamp specifications for this receiver:
Dial lamps 8V 0.3A (30mm x 6mm)
Dial pointer lamp 8V 50mA (5mm x 3mm)
Stereo indicator lamp 6V 30mA (approx.9mm x 4mm)