sony amplifier-receiver error mesage PROTECTOR

[andreas]

hello i have a a sony receiver-amplifier str-db725 PROTECTOR is the mesage on the screen when switching on the device can anyone help me thanks in advance

[burg_69]

My family also have one and I recall it coming up on theirs, have you gone through and checked all the settings, like speaker settings etc ( I assume it is 5.1ch receiver).

It happened when the volume was cranked to hard and then the word "Protector" appeared on the units display.

It should hopefully be like I said a simple setting, if unsure go through the manual and setup the unit again..

[andreas]

thanks burg 69 but the same problem apears with the vol off and no load.

[burg_69]

Andreas,

Try removing every input and output and see what happens, then add them back one by one to see if the problem rears its ugly head, maybe one of the speaker cables or speakers is shorted.

Burg.

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[CAOP]

Hi Andreas! In your amplifier check the outputs Transistors and the voltages to them.

[Joentje]

Check the driver-IC's for dry joints.

[mazmaz]

Hi
Check regulated voltage lines +5,+12,-12 to right value
Check grounded points to main ground
Check Output transistors(darlingtons)

[onkel.tom]

Hi Andreas

Have the servicemanual you need.
Check the solderpoints, its one of the most faults from Sony.

http://home.arcor.de/toms.mail/sony/Sony-STR-DB725-825QS.pdf

Greets Tom


Do you have the owners-manual?
Iv'e been looking for it...as scan?!

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