Can you still measure the resistor with an ohm meter? it may not be too far off the original value. Another thought I have is that the second band is violet, which when heated a lot may turn more "brownish". That would make it a standard 47 ohm, 2% resistor.
It appears to be a "metal film" type of resistor, and though heated a fair bit, I don't see indications that it is actually destroyed. What makes you think the resistor is the problem? In many cases, where simple solid state devices are used, it is the solid state device that "blows" first.
Are there devices on the other side of the board?