Question about Sharp R-1480 Microwave Oven
There are two possible sources; the fan, which may have a loose sleeve bearing (fan must be replaced), or a transformer with loose laminations. The latter is a rare occurrance since most transformers are 'potted' or treated with epoxy resin.
After pulling the plug, the housing will be fairly easy to remove with a half-dozen or so screws around the edge of the back panel.
If the fan is then accessible, you could block the blades with any insultating material and briefly turn the unit on. Keep fingers clear of ANY part inside; danger of electrocution. If the vibration is missing, then the fan is at fault.
Posted on Jan 26, 2009
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