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Freq counter ft225rd (display disappear) problem

Ic msm5564 in the counter unit pb-1734 1735 of ft225rd is defective, could somebody help me with information where to order or at least tell me the new/current equivalent ic number? since at my qth the old ic is not available anymore.
thank you
herman

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SOURCE: Rolling Frequency Counter

I'm giving this info from the Master Edition of C.B. Tune-up manual Volume 1 year -1995. The original price of this info was $39.95 But I have had people help me with radio info. so here it is---- on page 60 it says [ Model ] : Galaxy Saturn ( and export models using the same Freq. counter module ) The most common problem with the { Galaxy Saturn } is after it has been on for awhile the read-out becomes unstable. And sometimes it will quit all together. This problem has been traced to a Zener Diode inside the freq, counter module. The square silver box located right behind the speaker. The Zener Diode inside marked D-603. This is a 2.4 volt , 1/4 watt diode next to IC-609 the ( LM-7808 ) regulator. REMEDY: change D-603 to a ( 2.4 volt , 1/2 watt diode) This should restore normal operation. {{{{ 357 - MAVERICK }}}

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Rolling Frequency Counter


I'm giving this info from the Master Edition of C.B. Tune-up manual Volume 1 year -1995. The original price of this info was $39.95 But I have had people help me with radio info. so here it is---- on page 60 it says [ Model ] : Galaxy Saturn ( and export models using the same Freq. counter module ) The most common problem with the { Galaxy Saturn } is after it has been on for awhile the read-out becomes unstable. And sometimes it will quit all together. This problem has been traced to a Zener Diode inside the freq, counter module. The square silver box located right behind the speaker. The Zener Diode inside marked D-603. This is a 2.4 volt , 1/4 watt diode next to IC-609 the ( LM-7808 ) regulator. REMEDY: change D-603 to a ( 2.4 volt , 1/2 watt diode) This should restore normal operation. {{{{ 357 - MAVERICK }}}

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