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Here is a nice 1971 Ace Tone Fuzz Master FM-3 pedal. It came in needing a bit of work. The switches worked intermittently so I replaced them with quality Gorva switches. Unfortunately, someone left a battery in this pedal for an unknown number of years. It corroded the battery holder tray and plate. It had a bit of surface corrosion. I cleaned it up as best I could. Then I put a coat of wax over it for some protection. I replaced the battery clip. Most of the electrolytic caps were way out of spec. So, I replaced them all. I was able to substitute polypropylene film caps for all but the largest one. It is the only electrolytic cap left in the pedal. The pedal sounds great after the recap!
Here is some cool info as taken from the Big Muff page online….A rare early clone of the V1 Big Muff, circa 1971-73, and one of the first modified BMP circuits. This is a little known clone, often mistakenly thought to be a variant of the Roland Bee-Baa circuit. Ace Electronic Industries was founded by Ikutaro Kakehashi, who later founded Roland in March 1972. Prior to that Ace made the FM-1 which was a Maestro FZ1-A clone, and the FM-2, which was a Univox Super Fuzz clone, and the FM-3, possibly the first Japanese Big Muff clone. It was a very unique version of the circuit, incorporating a switchable volume boost stage (shown in red), allowing switching between distortion and boost (sadly, not combinable), with separate volume and tone pots for each.
Guitar-Restos 