Enclosure not stated · 4 knobs

DOD FX70-C Corrosion

Based on the DOD FX70-C Corrosion· 3 other boards clone it

Category: Fuzz· Fuzz and Fuzzy Noisemakers
Controls: Rust · Top · Bottom · Dissolve
Price: see vendor
Tags: Fuzz and Fuzzy Noisemakers

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 105 rows

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Check before you build · 4 values the reader of this schematic was not sure of

C26: drawn '.05u?' by the tracer
Ce: drawn '.05u?' by the tracer
Q4: drawn 'J11', probably J111
R26, C24: no values drawn

Ref	Value	Normalized	Type	Notes
Resistors 48
R1	470	470		Rust stage, in series with P1; read from the schematic by eye
R1b	10	10		IC1A + input to Vbias; R1 is printed twice (clash); read from the schematic by eye
R2	1M	1M		footswitch pull-up at U4; read from the schematic by eye
R2b	2K	2k		Top pot wiper to C24; R2 is printed twice (clash); read from the schematic by eye
R3	1K	1k		read from the schematic by eye
R4	22K	22k		read from the schematic by eye
R5	3.3K	3.3k		read from the schematic by eye
R6	220K	220k		read from the schematic by eye
R7	2K	2k		read from the schematic by eye
R9	100K	100k		read from the schematic by eye
R10	100K	100k		read from the schematic by eye
R11	100K	100k		to Vbias near C29; read from the schematic by eye
R11b	100K	100k		Q10 drain to Vbias; R11 is printed twice (clash); read from the schematic by eye
R12	10K	10k		read from the schematic by eye
R13	10K	10k		read from the schematic by eye
R15	10K	10k		read from the schematic by eye
R16	2K	2k		read from the schematic by eye
R17	100K	100k		read from the schematic by eye
R19	3.3K	3.3k		read from the schematic by eye
R20	4.7K	4.7k		read from the schematic by eye
R23	47K	47k		Q5 bias; read from the schematic by eye
R23b	100K	100k		at U4 pin 13; R23 is printed twice (clash); read from the schematic by eye
R24	10K	10k		read from the schematic by eye
R25	100K	100k		Vbias to IC1B +; read from the schematic by eye
R25b	1M	1M		U4 pin 12 to LED driver; R25 is printed twice (clash); read from the schematic by eye
R26	?	?		no value drawn (Q3 base divider); read from the schematic by eye
R27	10K	10k		read from the schematic by eye
R28	47K	47k		read from the schematic by eye
R29	220K	220k		from C15/diode node; read from the schematic by eye
R29b	10K	10k		LED driver collector; R29 is printed twice (clash); read from the schematic by eye
R30	220K	220k		read from the schematic by eye
R31	10K	10k		read from the schematic by eye
R32	10K	10k		read from the schematic by eye
R33	10K	10k		read from the schematic by eye
R34	10K	10k		read from the schematic by eye
R39	100K	100k		read from the schematic by eye
R40	10K	10k		read from the schematic by eye
R41	100K	100k		read from the schematic by eye
R44	100	100		read from the schematic by eye
R46	10K	10k		Q3 emitter; read from the schematic by eye
R46b	100K	100k		to Vbias at C29; R46 is printed three times (clash); read from the schematic by eye
R46c	100K	100k		output pulldown; R46 is printed three times (clash); read from the schematic by eye
R47	10K	10k		read from the schematic by eye
R49	10K	10k		bias divider; read from the schematic by eye
R50	10K	10k		bias divider; read from the schematic by eye
R52	100	100		supply series resistor; read from the schematic by eye
×1	330	330		undesignated (R?), Q8 emitter to C18; read from the schematic by eye
×1	10K	10k		undesignated (R?), Q8 emitter to ground; read from the schematic by eye
Capacitors 33
C1	120pF	120p		read from the schematic by eye
C2	.05uF	50n		printed '2C'; input coupling; read from the schematic by eye
C3	1uF	1u		electrolytic; read from the schematic by eye
C5	100pF	100p		read from the schematic by eye
C6	.027uF	27n		read from the schematic by eye
C7	.01uF	10n		read from the schematic by eye
C9	.033uF	33n		read from the schematic by eye
C10	50pF	50p		Rust stage feedback; read from the schematic by eye
C10b	.05uF	50n		at U4 pin 12; C10 is printed twice (clash); read from the schematic by eye
C12	10uF	10u		electrolytic; read from the schematic by eye
C13	.016uF	16n		read from the schematic by eye
C14	0.22uF	220n		read from the schematic by eye
C15	0.05uF	50n		read from the schematic by eye
C17	1uF	1u		electrolytic; read from the schematic by eye
C18	0.33uF	330n		electrolytic; read from the schematic by eye
C19	.016uF	16n		read from the schematic by eye
C20	.0015uF	1.5n		read from the schematic by eye
C23	50pF	50p		read from the schematic by eye
C24	?	?		no value drawn; read from the schematic by eye
C25	0.22uF	220n		read from the schematic by eye
C26	.05uF	50n		drawn '.05u?' (tracer unsure); read from the schematic by eye
C27	10uF	10u		electrolytic; read from the schematic by eye
C28	0.22uF	220n		read from the schematic by eye
C29	0.22uF	220n		read from the schematic by eye
C32	10uF	10u		electrolytic; read from the schematic by eye
C33	330uF	330u		electrolytic; read from the schematic by eye
C34	330uF	330u		electrolytic; read from the schematic by eye
Ca	.05uF	50n		read from the schematic by eye
Cb	10uF	10u		electrolytic; read from the schematic by eye
Cd	50pF	50p		read from the schematic by eye
Ce	.05uF	50n		drawn '.05u?' (tracer unsure); read from the schematic by eye
×1	.05uF	50n		undesignated (C?), Q2 gate network; read from the schematic by eye
×1	0.015uF	15n		undesignated, Q2 drain to R25 node; read from the schematic by eye
Diodes 5
Dc	1N4148	1N4148		read from the schematic by eye
Dd	1N4148	1N4148		read from the schematic by eye
×1	1N4148	1N4148		undesignated (D?), Q2 gate; read from the schematic by eye
×1	1N4148	1N4148		printed 'N4148', undesignated, at C15/Q4 gate; read from the schematic by eye
×1	Diode	DIODE		undesignated, beside Dc; no part number given; read from the schematic by eye
Transistors 10
Q1	J201	J201		JFET; read from the schematic by eye
Q2	J113	J113		JFET; read from the schematic by eye
Q3	2N5088	2N5088		after R32; read from the schematic by eye
Q3b	2N5088	2N5088		LED driver; Q3 is printed twice (clash); read from the schematic by eye
Q4	J11	J11		JFET switch, likely J111; read from the schematic by eye
Q5	2N5088	2N5088		read from the schematic by eye
Q7	2N5088	2N5088		read from the schematic by eye
Q8	2N5088	2N5088		read from the schematic by eye
Q9	2N5088	2N5088		read from the schematic by eye
Q10	J113	J113		JFET; read from the schematic by eye
ICs 4
IC1	4558	4558		read from the schematic by eye
IC2	4558	4558		only IC2A drawn; read from the schematic by eye
IC3	4558	4558		read from the schematic by eye
U4	4007	4007		CD4007, footswitch latch; read from the schematic by eye
Potentiometers 4
Rust	100K	100k	Potentiometer	P1, wired as variable resistor; read from the schematic by eye
Top	100K	100k	Potentiometer	P2; read from the schematic by eye
Bottom	100K	100k	Potentiometer	P3; read from the schematic by eye
Dissolve	100K	100k	Potentiometer	P4; read from the schematic by eye
LEDs 1
D6	LED	LED		read from the schematic by eye

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