Gold is 0.1x so 29x0.1 = 2.9 ohm. But it might be orange and not red, hard to tell on old dusty resistors.
Orange White Gold would be 3.9 ohm.
There are other resistors with the same color code around the flyback (R129 and R130). They look sane and read 4.5. The fault tolerance says +/- 5%, which would mean around 4.1 so that's close to 4.5, maybe they get a bit more resistant when aging.
So, after all, I don't think the resistor is bad, it might have suffered a bit but still functional.
But would you by any chance have this very same chassis to check the real color code?
I've managed to repair the coil, yes. I've got like 3 ohm of resistance so I guess there's no shortcut. Hard to test a coil but from my experience with pinballs, Good coil have a small resistance.
Q804 is also fried and I've seen a few of the Q801 to Q806 serie has been changed already. I guess the Power part of that chassis has suffered in the past and I will change all this serie of transistors.
R808 and R805 look darkish too, I will change them (I've got them values from another forum's old thread about someone repairing the same chassis).
From what I see, there's no blown caps and the neck board look OK too.
I will get the necessary fuse, transistors and resistors and will replace as much as I can to be sure.
Thanks for the help!