The chair raises and lowers by air pressure (I think) or hydraulic (less likely) when a handle is pressed. It fails to remain in the "up" position and sinks to the lowest position when the seat is occupied. Is it repairable ? If so how (manufacturer is unknown)?
Thanx.
By Bewildered Bob
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Might be there is some mechanical problem in the chair. To get it repaired in a better way, you must contact some expert manufacturer and get it done easily. As experts have years of experience in repairing the chair, they can help you in a better way.
You need to replace the cylinder that lets the chair go up and down. Replacement cylinders are available from the manufacturer or eBay. Here is a how-to article. www.ebay.com/
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