Audio emitter resistor

[dinopequi]

Bad emitter resistor on audio channel in Sony STR-DE897 A/V receiver. Nomenclature on bad resistor is 5 W K
2 - 0.22 Ω
49 2
What does that mean and what do I look for for a replacement?
Thanks

 

[AnalogKid]

Please post a photo of the resistor.

ak

 

[PETERDECO]

Welcome to the forum. Sounds like a 5 Watt .22 ohm resistor. I replaced many of them when I did stereo repairs. Check for shorted output transistors. Many times they are the cause.

 

[VenomBallistics]

often times, when these resistors go, it is because an output stage transistor endured a violent death and took the resistor with it

 

[Ylli]

..or a *dual* 5W 0.22 ohm resistor. If it has three leads, it is two resistors in the same package. I've always just replaced those with two separate resistors.

edit:
Yup, a dual. But as other have said, if one of these is bad it was most likely caused by failure of one of the output transistors.

 

[dinopequi]

Thanks all for your help. Ordered one and should have it in a couple days

 

[Ylli]

Thanks all for your help. Ordered one and should have it in a couple days

Do be sure to use a dim bulb tester (DBT) when you first fire it up, or you are likely to quickly burn out the new resistor.