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For all the instruments to go out at once usually says to me that it could be not the instruments but a power supply problem.
Check the simple things first, like battery terminals, and cables, and even the fuse protecting the instrument circuits, make sure it doesn't have dirty connections.
Whatever the problem it sounds like it has to be something that has a common connection with all the instruments on the dash.
Don't go overboard and rush in to blame the entire cluster, by taking apart the instruments you might damage something that may not be the root cause of the problem.
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