Sekova - Fuzz ( FA-II , Apollo , Crestwood )  [schematic]

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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dukeofearl
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Post by dukeofearl »

I'm guessing the big one labeled 224m50 is 224nf 50v, so i should look for .22uf. open to suggestions as to what type. and if anyone has a guess on the other two. i've done recapping before but never on a guitar pedal.

according to the diagram posted above, the little green fuzzy one would be C10, so 0.001uF - sound right? film, ceramic?

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grizzlytone
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Post by grizzlytone »

dukeofearl wrote:I'm guessing the big one labeled 224m50 is 224nf 50v, so i should look for .22uf. open to suggestions as to what type. and if anyone has a guess on the other two. i've done recapping before but never on a guitar pedal.

according to the diagram posted above, the little green fuzzy one would be C10, so 0.001uF - sound right? film, ceramic?
224 = 220000pF = 220nF = 0.22uF

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dukeofearl
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Post by dukeofearl »

thanks, i'll replace that one and see if it works. maybe the fuzzy ones are ok?

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dukeofearl
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Post by dukeofearl »

well i replaced that one cap and it's still not working. any other ideas?

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george giblet
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Post by george giblet »

well i replaced that one cap and it's still not working. any other ideas?
DC voltages would be good.

It's possible the electros are stuff.
Are the leads on that smaller green-cap OK ?

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drewl
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Post by drewl »

Is the volume supposed to be pretty low on these?

The output filter really kills the signal.

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drewl
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Post by drewl »

Ah, read the Tone Machines write up and this is normal.

This one is a 9v version in very good condition.

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BMS1971
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Post by BMS1971 »

hello, anyone kept the schematic? the original link is dead, even on web archives...

Nevermind, I found it ;-)

Ben

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Cub
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Post by Cub »

Could you please attach it to your post ?
It might save the next person looking for it some time and it'll keep this thread nice and complete.
I wish I were a chestnut tree, nourished by the sun.
With twigs and leaves and branches and conkers by the ton.

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BMS1971
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Post by BMS1971 »

Cub wrote: 05 Feb 2025, 10:41 Could you please attach it to your post ?
It might save the next person looking for it some time and it'll keep this thread nice and complete.
here
Image

If anyone is interested, the closest replacement GE is apparently MP39A

Ben

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mozz
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Post by mozz »

Thought i typed this but it must have disappeared. 2SB175 on the one picture are original transistors, not that hard to find but there are different gain buckets.

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