Hello - my Onkyo TX-NR626 receiver's left channel burned out and I am fixing it more for fun than anything. I have found most of the transistors and resistors on digikey but I'm quite stumped on this one. The markings read PHR MPR 5W R22J X2. There's some suspicious options of the same resistor available on ebay, ali express, etc. I'd rather get them from digikey if they carry them or come up with an equivalent. any help would be greatly appreciated!

 

It appears to be a 0.22 ohm 5W dual resistor used in audio amplifiers. It also appears they commonly fail.
I think you can use two resistors to make one. 220mohm 3 to 5 watt resistors. I think you want 5% or 1% accuracy.
I could not find a datasheet on the resistor.
Here is a picture of two resistors that might work.

 

it is a 220mohm 5 watt. when I solder it on, they will share a lead in the center. does that affect the resistance? e.g. should i get a lower/higher resistance to get to 0.22mohm?

 

it is a 220mohm 5 watt. when I solder it on, they will share a lead in the center. does that affect the resistance? e.g. should i get a lower/higher resistance to get to 0.22mohm?

No.

 

I tried to download the schematic for your receiver. This might be a portion of it. This shows the output stage of the power amplifier. The dual 0.22 ohm resistor sits near the power transistors. It looks like, at that factory they measured the voltage across the resistors. (at a two pin connector) There is a pot to set this voltage. I think you should not touch that pot, but I am certain the factory set the voltage.

I found where they say how to set the adjustment. If you try this, you need a meter to measure 2mV.