Glad you are now working at last. I do recall saying quite some while back:
"Did the 24v DC fail in a mode that put significantly higher, or maybe AC, volts onto the TNC - if so has the 24v input on the TNC let the magic smoke out?"
Thanks Mark....if i followed Gus,s advice I would be in flames right now...tee..heee.heee 8-)......just jokin Gus.....Well guys...here it is....found the fault....It was in the heidenhain control itself.....One of the resistor-fuses that are used to protesct the control circuits was burnt "open".....replaced it...and now that all the other things are repaired....ITS ALIVE!!!!
Glad you are now working at last. I do recall saying quite some while back:
"Did the 24v DC fail in a mode that put significantly higher, or maybe AC, volts onto the TNC - if so has the 24v input on the TNC let the magic smoke out?"
Andrew Mawson
East Sussex, UK
you certainly did look at that post or your pm messages...I replied to it and thanked you for the direction
Did you ever figure this problem out?
Yes I did...with the help of my huge brain.....no...seriously.....with the help of all the folks here. How can I help you ?
I have the same problem on a tnc 145 i cant find diagrams for it though, any idea where these resistor-fuses are found?
Found it all on my own!
Resistor next to J1/8 blown although didn't look black meter caught it.
all working!