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  #11  
Old 05-05-2022, 10:57 AM
Yamamaya42's Avatar
Yamamaya42 Yamamaya42 is offline
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Join Date: Nov 2018
Location: Round Rock TX
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Well, it ran for a while, then it stopped.

The cheapy China 500 ohm 10W resistor that was in there ( which I doubt was really 10w) burned open.
It was replacing a resistor rated at 7.8W, and the silly thing was sitting on the side of the chassis, but it still could not take the strain, I have another one, but I doubt I will put it in, cause it seems more like a 5W to me due to its small size, and the just over sold the rating.

I have the 600 ohm 10W in there now, and it seems fine, still just as loud, and it does seem to be a REAL 10W one, https://www.mouser.com/ProductDetail/71-RS10-600

As for the 2.6k power resistor, I could not find one in the exact rating needed, so I used, https://www.mouser.com/ProductDetail/279-THS101K5J & https://www.mouser.com/ProductDetail/588-40J1K1E
both rated at 10W the original being rated 6.5W.
I doubt that they are being pushed to the limit.
Where as the chassis mount resistors were tacked down to help cool them, there is no real way to do that to the other kind, unless thermal cement is used, but is such a thing needed?
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