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Old 29th March 2009, 03:30 AM   #1
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Default Need help finding part for Onkyo receiver / schematics

I have an Onkyo SR806 receiver which I'm trying to fix. Looks like the left channels are out. I can find the transistors on mouser, but there's this one 3-legged metal plate resistor which I couldn't find. It says:

P H R
MPR 5W
R22J X2

I think it's a .68ohm x2 ceramic resistor, but I can't find it anywhere. Does anyone know where I can source these?

Also, would anyone have the schematics for this receiver by any chance? Thanks and I appreciate the help!
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Old 29th March 2009, 03:56 AM   #2
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P H R
MPR 5W
R22J X2

equals... a dual .22R emitter resistor
very common in OEMs ,a picture would confirm this.

Are they these ?
Click the image to open in full size.

http://www.mcmelectronics.com/produc...5--22-/28-0540
OS
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Old 29th March 2009, 06:37 PM   #3
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Yes! They looks exactly like the ones in the middle.

So R22J actually does stand for 0.22 ohms resistors in series?

It's weird because when I measured with a voltmeter, it looked like it was 0.68 ohms, I need to double check.
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Old 29th March 2009, 06:44 PM   #4
fjr is offline fjr
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DMM's aren't accurate under 1Ohm.
An 0.22Ohm resistor easly measures 0.68Ohm!
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Old 29th March 2009, 06:51 PM   #5
jaycee is offline jaycee  United Kingdom
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Location: Norwich, UK
They're 2x0.22 ohm resistors with the centre pin common, which is where the speaker connects.

If you can't find them, you can replace with two similarly rated ordinary resistors BUT they must not be wirewound types.
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Old 30th March 2009, 12:51 AM   #6
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Ah, ok. I'll place the order on the site that ostripper sent me.

Thanks a lot!
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