"Dave W" wrote in message
...
On Wed, 9 Oct 2019 08:47:31 +1100, "AlexK" wrote:



"Tim+" wrote in message
...
Dave Plowman (News) wrote:
In article ,
Tim+ wrote:
This is the resistor from my macbook power supply.

It *look* to me to be black, orange, white (or grey), silver, brown.

https://photos.app.goo.gl/ZDY1qe8L3xKc4JBG8

I thought it would be easy to calculate the value but I think it falls
into a special category (5 bands, fourth band silver) so I'm not
confident about deciding it.

What is it?

Tim

Since it looks to be in good condition, measure it? That can give clue
to
what system they are using.

Um, the other side is burnt. It's fecked.

That's unusual, one side of a power resistor burnt and the other perfect.

You sure it wasn't burnt by what it was next to ?

I would think it's perfectly possible. Film type resistors are often
in the form of a spiral track on the body, and one part of a spiral
can blow, making a small burnt hole in the paint.

He didn't say a small burnt hole tho and they don't usually
fail like that when their power rating is exceeded.

Yes, in theory those spiral power resistors can be made bad
and fail like that, but that is very rare indeed, particularly
with the higher quality stuff like Apple gear.