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| Stilldrillin:
Eric. I had the same problem. Among many others, over time. Dave Bluechip brought a variac. Nowt wrong........ :smart: I put it back together. POP!! :bang: I bought a new motor, and control box..... Perfect! :thumbup: The motor was sent to Portugal, where it's working perfectly! :scratch: The control box is still on Dave's bench. :palm: Funny stuff, electrikery........ :loco: David D |
| Brass_Machine:
I have thought about hooking it up to the Mini Mills controller to see if it works on that. This GUY is saying the MOSFETs need to be out of the board to test. See 'testing components'. I haven't watched his vid yet. Getting frustrated. :doh: |
| John Rudd:
--- Quote from: andyf on March 13, 2013, 04:15:25 PM ---The motor (in the US they are 90V DC) should turn, though slowly, if connected up to a car battery. It will probably draw a fair old current, so best use jump leads. Andy --- End quote --- No need for jump leads... the current draw isnt that great..A small spark mebbe when connected..but you will need more than just one battery..2 at least 3 would be better Taking the mosfets out of the board requires some degree of skill...there's a possibility that you may damage the copper lands in an attempt to remove the mosfets...I normally cut them away from the board then remove the small remains... |
| Brass_Machine:
Ok. This has been driving me crazy. The only thing I have done is take it apart and put it back together. And dropped the motor, but I have fixed all of that. It doesn't explain WHY the board may have issues. So I went through the board and connections AGAIN. That was when I found it. There is a jumper wire that goes from on port on the wire clamp to another port. I somehow had knocked that lose with the dis-assembly. However, the wire was curved and was putting just enough pressure to look like it was connected. I popped it back in and screwed down the clamp. Ran downstairs hooked it all up and risked my last fuse. IT SPINS!!!!!!!! :ddb: :ddb: :ddb: :ddb: :ddb: Now to get it all back together! Eric |
| andyf:
:clap: Well, there you are! The moral of this story is that things should be given a good coat of looking at and wire-wiggling, to save all the :bang: :bang: Ive been there myself. For me, the fuse blew as soon as the lathe was plugged in and switched on. Took me ages to find that I'd trapped a wire from the (now discarded) chuck guard switch under a panel, and nicked though the insulation. Isn't it a great relief when faults which bring expense to mind can be fixed without resort to the wallet? Andy |
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