All the E's are out on my Farfisa... Help?

[Guest]

Got a Farfisa AuDiophasan(?) Organ from a friend of mine.</P>


Some of the keys were dead / stuck, so we fixed the obvious physical problems....</P>


However, all the E's are out on the top and bottom.</P>


Any suggestions?</P>
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[fredy2]

Re: All the E's are out on my Farfisa... Help?



If the unit is a tube type, there is likely one of the generating oscillators is out. The tubes might have two sections and the heater in one half could be bad. (check both halves).</P>


If solid state, then a transistor or electrolytic capacitor might be the problem.</P>


A broken wire to the generator circuitry for the E note could also be the problem.</P>


For this, you really need a schematic to troubleshoot and possibly an oscilloscope.</P>


I doubt this is a digital unit, however those would usually have a problem with the scanning hardware for the keyboards.</P>

[andyg]

Re: All the E's are out on my Farfisa... Help?



This is a Farfisa model 50 from 1971. All transistor, no tubes and nothing digital. You've obviously lost the generator for the E notes, so fredy2 is spot on with points 2 and 3.
</p>

These organs were pretty unreliable when they were new nearly 40 years ago and time won't have helped. The cost of the schematics and repairs will be far more than the organ's true value, which is nil. Unless this organ is of particular sentimental value to you, don't spend any real money on trying to fix it.</p>

Andy
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[fredy2]

Re: All the E's are out on my Farfisa... Help?



There is a schematic on Ebay for about 8 pounds in the UK for the FK-50.</P>


You might be able to troubleshoot it if the layout has each note generator organized such that you can compare the points within the note generators for voltage and waveform to isolate the bad one. A schematic sure would help. The failed part is likely very inexpensive... it just takes finding it.</P>

[andyg]

Re: All the E's are out on my Farfisa... Help?



This model 50 'Partner' and the FK50 are different instruments, around 6 years apart.</p>

Andy
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