Question about Sony ICF-2010 AM/FM/SW Radio

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Display / Clock display not working

The display for my clock and radio station does not show when the radio is on.Will a fuse had blown or is there another reason.It is a Sony MHC-EX50 Tuner

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SONY MHC-EX50

Het is al een paar weken verder, maar ik ben eruit: C161 en C162 (100uF/35V) in de voeding zijn slecht.
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wel 105 graden elco's gebruiken en hoger dan 35 volt, liefst 100v
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et gaat dus om een VFD (Vacuum Fluorescent Display) die geen gloeispanning krijgt. Het vervangen van C161 en C162 lost het probleem helemaal op.
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Radio: ST-EX100
Amp: TA-EX50
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Symptome=Tuner-Display zeigt nichts an, sonst Tuner OK.
Defekt=C161 und C162 (100µF,35 V) auf der Tunerplatine ersetzen.
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Wenn bei dem Sony-Tuner RDS EON ST-EX100 (z.B. zu der Anlage Sony MHC-EX5, aber auch MHC-EX 70) pünktlich eine Woche nach Ende der Garantiezeit die Beleuchtung im Display wegfällt und man deshalb leider keine Sender mehr programmieren kann, dann handelt es sich vermutlich um eine fiese Soll-Bruchstelle.

Auf der Platine des Tuners sind zwei Kondensatoren zu schwach ausgelegt und gehen zwangsweise früher oder später kaputt. Die Reparatur ist ganz einfach. Man kauft zwei neue Kondensatoren (100µF,35 V) - kosten nur ein paar Cent! - und besorgt sich einen Lötkolben. Dann schraubt man den Tuner auf, entfernt auf der Platine die Kondensatoren C161 und C162 (die sind namentlich gekennzeichnet) und ersetzt sie durch die neuen.

Posted on Jan 27, 2009

  • 4 more comments 
  • ferraste Jan 05, 2011

    Hola563,
    many thanks for your suggest. My MHC-EX50 tuner display reborn after C161 and C162 change.
    You are great!!!!
    I find this Mini HiFi in rubbish and now is working again and used by my son.
    Thanks again
    Stefano Ferrari
    Milan - Italy

  • Dr Jon Case Jan 19, 2012

    Many thanks Hola563, your solution worked for me.
    Regards,
    Dr Jon.
    Nottingham, UK

  • Job Langedijk
    Job Langedijk Mar 12, 2014

    I really dont know how to do this myself....

  • Job Langedijk
    Job Langedijk Mar 12, 2014

    I really dont know how to do this myself....

  • Job Langedijk
    Job Langedijk Mar 12, 2014

    I dont know how to do this myself, could anybody send pictures and descriptions to Jobb1998@live.nl ?

  • Giovanni Onida
    Giovanni Onida Feb 21, 2017

    Great advice! I just repaired my ST-EX100 by following your instructions. The display is works well again. Thank you!!!
    Giovanni

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Solutions for MHC EX70 AV:
ST-EX100 tuner display: C161 + C162 capacitators change
TA-EX70 amplifier display: C971 + C972 capacitators change
TA-EX70 amplifier turn on/off with no operation: check fuses F911 + F912

Posted on Apr 22, 2011

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No sound and not displayed too !

Posted on Oct 09, 2010

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AA batteries may need replacing

Posted on Feb 09, 2010

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