Goldstar unit makes humming noise

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Old 07-07-13, 10:11 AM
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Goldstar unit makes humming noise

Friends: I have a Goldstar (LG) 8000 BTU window air conditioner. Of recent I have noticed it started making a humming noise and slight vibration when starting up. This would last for half an hour. I opened the cover yesterday and cleaned the inside and secured all components. The fan seems to be working quietly. The unit cools OK so I am wondering if the compressor needs oil. There is a vent for refilling on the compressor. How can I test if the unit needs compressor oil? If this is the case, is there a site to walk me thru how to do this? Thanks for any help.
 
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Old 07-07-13, 10:27 AM
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Compressors don't need oil...other than the initial fill along with the refrigerant. Not sure what vent you may be seeing as it is a sealed system.
 
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