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Service Manual Retro Stereo 50 Tutorial How to dis-assemble and re-assemble a Retro Stereo 50. Tools: 1.5mm hex screwdriver T10 screwdriver 2.5mm hex screwdriver T20 screwdriver 10mm spanner (to remove the nut holding the volume potentiometer) Mid-size Philips screwdriver Step 1...
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Service Manual Step 2 Then all around the metal case remove the 11 x screws. Lift the top cover and set aside.
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Service Manual Using the 1.5mm hex screwdriver, carefully remove the 4 x large knobs at the front the Stereo 50. Using the 10mm spanner, remove the 4 x nuts that hold the front control panel.
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Service Manual Step 3: Removal of the Front Control PCB Remove the complete front control PCB (2 pcs) by undoing 4 x screws on the far right which hold the volume pot in place. Unplug the 2 x cables and ribbon cable underneath the PCB and then lift and remove the front control PCB.
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Service Manual Step 4: Removal of Back Panel Undo the 5 x small Philips screws, 2 x large screws and RCA / component screws. Unplug a total of 4 ribbon cables, disconnect the transformer plugs and carefully disconnect the Bluetooth connection cable. Remove the back panel and place to one side...
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Service Manual Step 5: Removal of the DAC PCB Unscrew the side screws holding the transformer cage in place. Lift and remove the Transformer cage...
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Service Manual Then you will see this: Remove the 4 x 2.0mm screws and take out the DAC PCB At this point you can remove the tubes whilst the main PCB is still secured. Place the tubes in a protected area so they don’t get damaged. Remove the ribbon cables attached to the main PCB.
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Service Manual Re-assembly in the following order: Main PCB > DAC PCB > Back Panel > Transformer cage > Front control PCB > Top chassis cover > Re-Installation of the back panel (service notes) Install the back panel first and the transformer cage second. Do NOT tighten the 4 x 2.5mm screws that hold down the DAC pcb.
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