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HOLMES REBUILD PROJECT

Sound Pickup


Holmes projector stereo sound pickup
LEFT PICTURE

Closeup of two photo-transistors glued side-by-side for stereo pick-up. These are Panasonic type PN116.

RIGHT PICTURE

Photo-transistors with wire leads attached and mounted on bracket that mounts through original hole for old photocell socket.







Holmes projector stereo sound pickup

Closeup of photo-transistor mount bracket ( photo-transistors attached with super glue ).
Wires must be carefully soldered onto photo-transistor leads without getting the transistor too hot.
Use small gauge (24 or 28) stranded wire and cover solder connections with heat shrink tubing.
Be careful not to bend transistor leads, if bent several times they will break off.