SOURCE: sony dav-dz100
That means you have a bad speaker, speaker wire, or a componet in the output stage of the amp blew out. First thing to try is to disconnect all the speaker, Turn on the unit. If it still reads the same, you have a problem with the amp. these are solid state units and have no user replacable parts inside of them.. You will need to have it serviced or get a new unit, as to have these repaired or even estimated these days is very costly. Good Luck Please dont forget to rate this thread.
SOURCE: PROTECT UNPLUG
This is a common problem with sony it means unplug me or i will explode, it is a protection of the heat sync and usually means that a cooling fan has shorted out. If under gurentee return to Sony for repair if not under guranebntee as is generally the case check on the net for a replacement fan motor - as far as i know sony were sourcing thier fanns from Sunon there is a German based headquarters - just google sunon europe
SOURCE: protect
The protect message indicates a problem was found inside the amplifier. The output transistors are most likely shorted and need to be replaced. This is a fairly simple repair and should cost about $40 in parts plus your local labor charge.
Dan
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