2pcs For A727 REVOX B226 CD player Luminous film Backlight film
2pcs
The
backlight film of the STUDER A727 CD player may darken or become
illegible over time due to aging. The only solution is to replace the
backlight film. We have specially customized a universal replacement for
the A727, which is perfectly compatible in size.
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IMPORTANT INSTALLATION NOTE: The film must be installed in the correct
direction. The side without electrodes is the light-emitting surface.
We have summarized the simplest repair steps for you:
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Disassembly: Carefully unsolder the two purple and
gray wires. Then, unsolder one end of each of the three resistors. This
will allow you to remove and install the new backlight film.
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Reassembly: After installing the new backlight
film, insert the wires and resistors back into their original soldering
holes and re-solder them.
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Testing & Calibration: Power on the unit to test. Measure the voltage on the backlight film's pins. The normal voltage should be within AC 100V. However, due to the age of the unit, the voltage may rise (we measured one unit that reached 130V).
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Locate the variable resistor next to the display ribbon cable port.
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Adjust it to lower the voltage to around 90V. This makes the backlight dimmer and significantly extends the lifespan of your new backlight film.