Ett lampbyte kanske kan avhjälpa ditt problem med brända säktingar.

I had problems on my Scared Stiff machine blowing F107 after a few hours.
8 of the 12 flahsers where replaced with the non standard 906 bulbs.
They substituded 912's and the problem stumped me for awhile.
Once I replaced all of the 912's with 906's, the problem went away.
My understanding is; lower voltage bulbs..they burn, higher voltage...fuse burns (or worse)...

Ok thanks for the warning. I'll just have to go out and get some 906's