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Old 12th March 2006, 03:26 AM   #1
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
Default Need component values for Xtant 603x

I need the values for the resistors designated R320 and R330 in the power supply of a 603x. Xtant has not replied to email so I'm looking elsewhere.

Thanks in advance
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Old 12th March 2006, 02:42 PM   #2
diyAudio Member
Join Date: Jan 2005
Location: The Great Lakes
I wish i could help you out, i have no xtant laying around, actually i never repaired one. If you can, i need the value of these 2 resistors on a alpine mrd500.

Click the image to open in full size.

R537 and 538, i replaced them with 10 ohms, i have a mrdm301, and they use those values. but they seem to smoke when power is applied to the amp, i'm guessing there the wrong value, I have a funny feeling its the tda7571 is not working correctly.
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Old 13th March 2006, 09:10 PM   #3
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Join Date: Nov 2003
Location: Louisiana
I received a reply from Xtant. For those who may need this information, the values are:

r320 is 100ohm
R330 is 1.0 k

I've never had to work on one of those amps so I don't know the value of those resistors. Where did you find the IC for it?
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Old 14th March 2006, 01:23 PM   #4
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Join Date: Jan 2005
Location: The Great Lakes
I found out that they are 3 watt 10 ohms, so i was right. I never found an ic for it. There's a place in canada that sells alpine parts, they sent
me a small part of the service manual, it shows what the voltages are on each of the 64 pins of the ic . This way i can check if its the ic or not.
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