Here are the Instructions / Guides / Manual you may need on How to Repair / Restore / DIY / CLEAN, LUBRICATE, AND ADJUST Yashica Electro 35 Rangefinder Camera
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“Yashica Electro 35 Rangefinder Camera Service Manual”
File Type: Pdf
Number of pages: 124 pages.
File Size: 7 mb.
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The original Electro 35 was introduced in 1966. It has a “cold” accessory shoe and the meter accepted film speeds from 12 to 400 ASA. Light levels are measured using a cadmium sulphide (CdS) photoresistor and powered by a mercury battery. The film speed adjustment is not implemented electronically; instead a simple twin-bladed diaphragm closes in front of the light sensor as the film speed is reduced. The light metering electronics works by accumulating the measured light level and only releasing the shutter when it has determined enough light has fallen on the film. This system allows the shutter speed to be completely step-less and to adapt to changing light levels. SLR’s would wait many years for a similar capability with off-the-film metering. The metering system can keep the shutter open for up to 30 seconds. Without a battery to power the meter, the shutter defaults to its top speed of 1/500 second.
The Electro 35 G was introduced in 1968 with largely cosmetic changes. The range of usable film speeds was extended a little up to 500 ASA. The lens was labelled a “Color Yashinon” to reassure the buying public that it was colour corrected at a time when the use of colour film was growing quickly. The Electro 35 GT was released in 1969 with a body painted black instead of the satin chrome finish.
The Electro 35 GS and GT were introduced in 1970 . They (and all later Electro 35’s) have all internal electrical contacts gold plated to prevent oxidation from impeding the flow of electricity around the circuits. The range of usable film speeds was doubled to range from 25 to 1000 ASA.
The Electro 35 GSN (satin chrome) and GTN (black) were introduced in 1973. The major change for these cameras was the addition of a hot shoe while keeping the PC socket.
“Pad of death”
Part of the internal mechanism involves a spring-loaded slider operating a set of switch points. As the film-advance lever is operated, this slider shoots up to its original position, hitting a small rubber pad at the top. Over time this rubber degenerates and prevents proper (internal) operation of the camera, in particular its metering circuits. The camera needs to be disassembled for this pad to be replaced.
The Electro 35 was designed to operate using a 5.6V mercury battery but these have now been banned due to environmental concerns. However a 6V alkaline battery (PX28A or 4LR44) with an adaptor works just as well.
Like many older cameras, the original foam light seals around the film compartment will eventually break down and cause light leaks. The seals are fairly easy to replace.