Protector mode SONY STR D1011S am fm receiver

Here is a guide for you: STR DA30ES Protect


let us know how , if you need further assistance.

Unfortunately this is not a fuse problem, as the fuse would burn before the protector check code appears. Probably there is a short circuit and you should take to an authorized sony repair shop. Good Luck.
Flavio/BRAZIL

Try disconnecting all the speakers from the back and turn the unit back on. If the "protector" display goes away, turn the unit back off and reconnect one speaker. Turn it back on and check for "protector". Repeat.

If you find that one of the speakers causes "protector" to appear, you either have a bad speaker cable or bad speaker. Try swapping each of those out to see what happens.

You've blown it. It recognizes a potentally harmful situation and goes into protect mode.

Nope, power supply it would not even power up.  The capacitors are fried

Hi,
Download service manual of STR-DE525 here and fix your receiver.
Must download all 4 files at web site.
Need further help, let me know.

find out why the fuse blew in the first place.the protector is just PROTECTING the main circuits of the receiver.the receiver turns on just to confirm the power circuit is OK.
have it checked by an electronic engineer.

Cambiale los IC de audio que esten dañados.

The only way to reset protect is to eliminate the problem which activated it. Problem may be insufficient line voltage or unit's output circuit. Have unit checked out by prof, tech