I changed a resistor with same color stripes Yellow, Purple, Gold, Gold on a Pioneer surround system but the only difference was that the I put was a bit bigger. The problem is the system went into protected mode because of an error, I forced reset it and the fuse blew up. Was it because of the resistor I changed?
UPDATE: It was not a fuse that blew up, It was 2 of D5SBA60 silicon bridge rectifier that blew up. There is leakage from there.
I have pics of the 2 silicon bridge rectifiers and the resistor that I changed:
I measured this resistor in ohms and only shows open line, other one is ok, about 5 ohms. I will be replacing it for a good one, to me it looks like it leaked.
Best Answer
In general, a resistor can be characterized by three values:
The color stripes tell you about the resistance (and about the tolerance of that value). So if the color stripes are the same, the resistor has the same resistance.
If the resistor's maximum allowed power is too small, the resistor will heat up and may be destroyed (e.g. burn). There is no problem if the resistor's maximum allowed power is higher than required. Although this is not sure I would expect that a "bigger" resistor allows more power than a smaller one.
Typically you can forget about the behavior when the resistor gets heated.
You didn't change the resistor just for fun but because your system did not work any more.
In this case you can nearly be sure that the resistor was not the only part that was destroyed.
If you only change the resistor, the other parts that were destroyed still are destroyed. I guess that these parts caused the fuse to be blown - not the resistor.