I concur with previous info with one little addition.
I would check and make sure of the condenser and condenser fan area of the system. USUALLY, if the restriction is at the TXV the system cannot build up that high of pressure since it is not getting any refrigerant thru the evaporator, it will go into a pumpdown state. If the condenser stops doing its job or if the unit is overcharged or over reved, then it will blow out the safety plug or toast a compressor and/or hose.
Angelo
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