Vortexion CBL 6

[Diabolical Artificer]

You may as well take the OPT apart, they're pretty easy to do. You need a hammer, sharp slotted screwdriver and an old butter knife. If you tilt the tfmr on one end after removing the bolts and first "I" use the screwdriver and knocking stick to tap out the first "E", use the knife to slice in between lams to break any varnish. The first "E" might come out easy or it might be a right (insert curse here) to get out,you may have to resort to molegrips and brute force to remove it mashing it up in the process. Most come out easy and once you have removed three lams your fine on the whole. Use the thin butter knife to break any varnish as mentioned.

You may be lucky and find a short or break easily, it's in the hands of the transformer Gods, it helps if you leave out sauces of varnish to propitiate them : ) Seriously though it's odd that both your tfmr's are kaput. As you see the insulation is crumbling which may be the cause. I've been lucky with mine, only one dead mic IP tfmr which I have a spare for.

Good luck, Andy.