Mmats d3500.1 questions for repair

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punch45x2

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Joined 2020
Here ya go.
 

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MatthewS

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Joined 2008
There is a capacitor on the edge of the PCB, between the speaker outputs and RCA jacks. Directly in front of it is a wire wound resistor. It should read 10 ohms or less. Make sure it's within tolerance. If not, order one.

Make sure you order a matched lot of MOSFETs for the entire output section. If you pulled out irfz3710s, order irf3710Z replacements. If not post the original part number.

That's all I can think of.
 
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rdiaz

Member
Joined 2016
Sorry for the late response, check C38 and C39 next to sg3525 make sure they aren’t cracked for some reason this caps can make noise on the toroid. I think c38 is .001uf and c39 is .01uf. If you’re replacing the output mosfets I recommend you to change the output drivers ICs as well.
 
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