The Yamaha Rubber Contact VU32850 2M is a specific spare part used in Yamaha electronic keyboards and digital pianos. It is a conductive rubber contact strip, or membrane, that sits underneath the keys. When a key is pressed, it pushes the rubber contact onto a circuit board to complete a circuit, which registers the key press and determines the note velocity.
Product description
Function: Serves as the key sensor for a group of keys on a Yamaha keyboard. Over time, these rubber contacts can wear out or lose their conductivity, leading to “dead” or inconsistent keys.
Part number: The full part number is typically VU328502, although it may be seen as VU32850 2M. The “2M” portion indicates it is a strip with two rubber contact points for each key.
Unit: This particular strip is a “1Key” version, meaning it contains two contacts for a single key. You would need to purchase a specific number of these strips to replace all the contacts for a given section of the keyboard.
Compatibility
Because Yamaha uses different rubber contact designs for different keyboards, it is crucial to verify compatibility with a specific model before purchasing. Some sources indicate the VU328502 part is used in certain Yamaha PSR-X series keyboards. However, other sellers list different part numbers for other keyboards, even within the same PSR line.
