Hi, Protect is an error code for short and/or overload. It will appear once the processor sensed a malfunction either on the power supply
or on the load (high chance is the output IC). DIY steps are as follow to
determine where the fault is : 1. Allow the unit to cool down for an hour. Give proper ventilation and keep away all obstruction from the
vent to have a sufficient air flow. 2. Disconnect one at a time the speakers,
inputs, from the unit and then power it on. If the unit resume its operation then you've confirmed that any of the above caused the error code. If #1 is the
caused, you have to check also the exhaust
fan (if installed), clean it as much as possible, replaced if faulty. If #2 is the caused
(speaker) check the wire and speakers for short,
(input) check the RCA cord for short or replaced if necessary. If the steps above didn't resolve the symptoms, the fault is inside the unit and needs to troubleshoot by a qualified technician. I would advice you to contact your local Sharp service center and ask for an estimate to have an idea how much money you are going to spend sending the unit in. Freelance technician is another option, you can saved some money compare to service center's fee. Also, check if your unit is under warranty period(1 year), if so, avail it because the manufacturer will fix it for free, opening the cover of the unit will void the warranty. Hope I helped you. Have a nice day! Jdvillanueva
That could meen that something is improperly connected. You should try to disconnect everything, and then reconnect it step by step.
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