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I've got a pair of Lexicon 224s (non x or xl) that I've managed to get back to life with some success though ultimately I've ended some variety of intermittent issues. Works for a bit, then something on the digital boards fails, its a a little exhausting (especially as they're one of my favorite reverbs at this point). So this last week I rolled up my sleeves and decided to recap the power supply hoping to start to stabilize the darn thing. Finished it today and plugged it in to a rather disappointing result of the +/- 12v rails being out of spec @ 11v ( 11.4 is the lowest voltage recommended in the manual. So I've just ordered the all the IN5404 to fully redo all the PSUs as well as all the rectifiers just to make sure that these things will be right.
However I do have a few questions:
1.) Does anyone have the V 4.4 software available to be able to burn some fresh eproms with? I have the NVS board and just want to make sure I'm going to get as close to new as I can on these.
2.) Does it make any sense to replace the tantalum capacitors on any of the boards? Not so much for any sonic reason but more for just general long term reliability.
3.) Does anyone have any experience calibrating both the A/D and D/A sides of the machine for maximum S/N ratio?
In any case I know lots of people still own these but have given up (especially in the states) after Jim Fabiano left the biz, but it sure feels like these aren't TOO much handle and that with a little bit of leg work we can keep these beauties going for everyone for quite some time to come.