Sony Receiver STR-DA555ES displays "protection fan" when turned on

[rick79]

I noticed a 3.15A fuse was blown, I tried replacing the fuse with a new one, but it just blew out right away as soon as i turned it on. Is it the fan that's causing the fuse to blow?

 

[ronsimpson]

Probably not the fan.

If the fan failed then the temperature will be high and something will fail. That something will pop the fuse.

 

[rick79]

Probably not the fan.

If the fan failed then the temperature will be high and something will fail. That something will pop the fuse.

Why does it display "protection fan"?

 

[ronsimpson]

I really don't know but maybe the fan failed and that is the last error it received.
________________________________
I just typed "Sony Receiver STR-DA555ES fan error" in to a search engine and you are not alone.

 

[rick79]

I really don't know but maybe the fan failed and that is the last error it received.
________________________________
I just typed "Sony Receiver STR-DA555ES fan error" in to a search engine and you are not alone.

Lol, damn. How can i test the fan?

 

[ronsimpson]

Testing a fan:
Well I stick my finger in the fan. If I pull back a bloody stump then the fan is running very well.
lol
Don't you wish I was even a little helpful.

If you are popping fuses then you have bad power transistors. most likely.
------------------------edited----------------------
https://forums.audioholics.com/forums/threads/sony-receiver-with-protector-fan-message.12089/

 

[rick79]

[QUOTE="ronsimpson, post: 1202441, member: 63transit or ing a fan:
Well I stick my finger in the fan. If I pull back a bloody stump then the fan is running very well.
lol
Don't you wish I was even a little helpful.

If you are popping fuses then you have bad power transistors. most likely.[/QUOTE]
This is better than no help at all. So the fan isn't working because of the blown fuse caused by the bad transistor?

 

[ronsimpson]

Probably

Trouble shooting by long distance is hard.

 

[rick79]

Probably

Trouble shooting by long distance is hard.

What do you mean?

 

[ronsimpson]

I can't look inside you receiver.
I can't test parts with a meter.

 

[rick79]

I can't look inside you receiver.
I can't test parts with a meter.

Oh.
I can do it, but i dont know where to start

 

[rick79]

Are there any electronic technicians on this site or anyone with some experience that can help?

 

[debe]

Generaly its not a good start if you don't know where to start. A circuit diagram of the unit would be a good start?? And maybe pictures of the insides of the unit. Does it actualy have a fan in it??