On the display it flashes 'PUSH POWER PROTECTOR'
SOURCE: Code for making Sony DAV DZ270 region free
HOLA QUE TAL COMO ESTAN ... TENGO UN PROBLEMA CON MI DVD MODELO DAV DZ270 ENCIENDE PERO ME DICE PROTECTOR Y LUEGO PUSH POWER ...Y NO SE QUE HACER .....ME IMAGINO QUE ES PROTECTOR Y NO SE COMO QUITARLO ... ALGUIEN ME PODRA AYUDAR... LE AGRADECERIA MUCHO... GRACIAS
SOURCE: Facing problem on sony home
Hi,
If you are getting the above warning message is displayed, press the 
button to turn off the system and check the following items after "STANDBY" disappears.
Place the system in a location with adequate ventilation to prevent heat build-up.
Do not block the ventilation slots by putting anything on the system. If the ventilation slots are blocked, the unit can overheat and malfunction.
After checking the above items and fixing any problems, turn on the system.
Hope this helps. Thanks for using FixYa.
SOURCE: Hi Sir , Sony DVD Model
It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation. Thank you for using Fixya
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.
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