The disadvantages of SCART
SCART is a French-originated standard and an associated 21-pin connector, which is used for connecting audio-visual (AV) equipment together.
Due to an insufficient number of pins, SCART can not carry both S-Video and RGB signals simultaneously. But it is possible to output S-Video and RGB alternately, and the TV set will automatically adapt if it understands SCART’s S-Video extension.
The thickness and inflexibility of the SCART cables, and because they are connected to the plugs at an angle, it can sometimes be difficult to connect items of equipment, especially in confined spaces. But the thinner cables are more susceptible to cross-talk, and are unable to support all communication modes at once.
SCART is confusing for consumers. Some TV sets, which have multiple SCART connectors have one capable of receiving RGB while the other one capable of receiving S-video.
SCART connectors provide limited locking, using detents. They are prone to falling off or getting loose, especially with the thick 21-wire cable, which is relatively heavy and often leaves the connector at the sideways angle. For this reason, loss of audio or video connection due to a loose SCART connector is relatively common. Depending on which end of the plug is loose, either a loss of audio or rectangular end or a loss of video or triangular end is observed.
SCART can not carry non-RGB component video signals.
The cheap 10-pin SCART connectors are very fragile and are prone to breaking or losing pins, since they are big and hollow. However, the 21-pin SCART connectors are stronger.
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