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| Click here to select a new forum. | | Mac II PSU CR-45S bad - blows fuse when plugged in | Posted by: Byrd on 2016-10-24 03:44:48
Hi all,
I've a Macintosh II PSU, model CR-45S that immediately blows its 250V/6.3A fuse when plugged in, tripping off the circuit breaker of the house. The PSU itself is spotless - the only damaged noted is at L202, where the lid of a component has come off. I suspect it's some sort of large resistor (can see wire wound copper inside the component where the lid fell off).
Which is where I'll start when I get the PSU out of the case - do others know of common failure points in the Mac II PSU? Would a failed resistor cause the PSU to fail so quickly?
Thanks
JB
| Posted by: bibilit on 2016-10-24 04:18:50
a bad Mosfet can do that and probably a bridge rectifier.
| Posted by: techfury90 on 2016-10-25 21:39:05
That's not a resistor, that's a coil. Resistors are usually designated with R, not L. L is usually for coils (inductors, etc.) in terms of component designations. Plus your description matches with a coil more. Hopefully the wire is okay, because you're going to have a hell of a time replacing that, otherwise. I concur with what bibilit says.
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