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I have a philips CDR778 2 Disc recorder and the display comes on with scrambled symbols instead of english letters for everything. Can you tell me the correct voltages outof the power supply and what could be going wrong with the unit.

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  • apfwelty Dec 28, 2008

    Dear sirs at FixYa

    I am not satisfied with your comments on the Philips CDR 778 2 Dics unit. Your comments covered only external voltages and operations. I service equipment and was inquiring about the internal switching power supply voltages controlling the main IC and the display. Are the voltages listed in my previous E-mail correct and the IC, 87CH74F bad thus causing the scrambled display?




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• 1 x Analogue line output CDR (+ CD) : 2 Vrms +/- 2 dB / 0.2 kOhm
• 1 x Analogue line output CD : 2 Vrms +/- 2 dB / 0.2 kOhm
• 1 x Digital coaxial output CDR (+CD) : 0.5 V (pp) / 75 Ohm
• 1 x Digital coaxial output CD : 0.5 V (pp) / 75 Ohm

Posted on Dec 27, 2008

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Technical Specifications CDR778


    • System : Compact disc digital Audio

    (Dual deck CD-recorder + CD-player)

    • Number of channels : 2 (stereo)

    • Applicable supply : 117V

    • Power consumption : 19W (<=6W in standby)

    • Operating temperature : 5-35°C

    • Weight : 11 lbs

    • Dimensions : 17.1" W x 12.2" D x 3.46" H


    • Digital frequency range : 2 Hz - 22.05 kHz

    • Playback S/N (CDR & CD) : 100 dB (A - weighted)

    • Playback dynamic range (CDR & CD) : 95 dB 90 dB

    • Playback total harmonic distortion : 91 dB (0.0033%) & 85 dB (0.0056%)

    + noise (CDR & CD)

    • Recording S/N (Analogue) : 98 dB (A - weighted)

    • Recording S/N (Digital) : Recording quality equal to Source

    • Recording dynamic range : 92 dB

    • Recording total harmonic distortion + noise : 85 dB (0.0079%)

    • Headphones : 3Vrms / 8 - 2000W


    • 1 x Analogue line output CDR (+ CD) : 2 Vrms +/- 2 dB / 0.2 kOhm

    • 1 x Analogue line output CD : 2 Vrms +/- 2 dB / 0.2 kOhm

    • 1 x Digital coaxial output CDR (+CD) : 0.5 V (pp) / 75 Ohm

    • 1 x Digital coaxial output CD : 0.5 V (pp) / 75 Ohm

    Input (level adjustment)

    • Direct line recording (bypass SRC) for : 44.1 kHz +/- 100 ppm

    • 1 x Digital coaxial input (SRC) : 12 - 56 kHz / 0.5 Vrms / 75 Ohm

    • 1 x Digital optical input (SRC) : 12 - 56 kHz

    • 1 x Analogue input : 500 mVrms / 50 kOhm = 0 dB

  • blueextc3221
    blueextc3221 Dec 27, 2008

    Technical data

    Subject to modification without notice.


    Power consumption.....................................................................20 W

    Power consumption in Standby ...............................................6 W

    Operating temperature.......................................................41-95 °F

    Weight.............................................................................................9.92 lbs

    Dimensions.........................................................17.1” x 12.2” x 3.5”



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