I've got a problem on my TAF machine where it gives the check F114 and F115 message. I've been through other posts here and the instructions on pinside; but am looking for more feedback before I go and start desoldering/resoldering stuff to the driver board.
Both of the fuses are fine (checked them by removing them). The +12V pad gives 0V. What's weird though is the other voltages are off. The +18V pad is giving around +16V and the +50V pad is giving around +70V. The AC input voltages from the transformer look fine...but the input to the 12V regulator is only in the low 15V range (and I've read conflicting data that says the regulator needs 15V or 17V input to function). The bridge rectifier for the 18V input tests fine (but of course that doesn't mean it works)....and while it's AC input looks fine (13.5 VAC) the output of the bridge is in the low 16V range...and this value floats around +/-0.5V which seems odd since it's connected to a cap that should be evening it out.
So I'm thinking I have one of two problems...either my voltage regulator is bad...or my bridge is bad for the +18V supply. Is seeing +16V on the +18V connection abnormal and not enough to power the regulator? If so, then I'd think the problem is the bridge...but if those values are reasonable, then I'd think it's the regulator. But then there's also the weird +70V reading for the +50V pad...so maybe there's some other weird issue going on.
I should also mention I'm using a replacement Rottendog board which I bought about 5 years ago.