My lathe is dead

[John Swift]

Hi Benni ,

Yes the photo confirms what I expected

with out a picture of the printed circuitside
I Can't see exactly how the ribbon cables are connected
but it looks like its a simplified version of the CJ0618 relay board and a basic 5v supply for the tacho

what i can't see in the photo is the neutral wire to the board

the two green wires will be to R4 (4K7) used to reduce the speed in reverse

the two red wire I expect to be the live mains supply to the board and the switched live to the speed control board
with the picture of the other side I will be able to tell which is live in and which is live out
the black and brown wires are the controlled DC supply

It looks like the relay is a three pole relay
once the circuit is traced
we can plan how to test each board on its own

   John 

[pete3000]

looks like the red L1 is the live, and not cleverly the red L2 is the neutral supply coming from the solder splash board. The red L2 neutral is T'd off on a spade. Both should be removable to isolate the mains to the relay board. If the diagram is correct.

[minerva]

Hi Benni,
I have just chanced upon your problem , You have my sympathy for  I experienced quite recently similar problems which prompted me to examine in detail the electrics of my lathe (the same model as yours) having got the machine working again I documented the said exercise on my web-site. where I have gone through the regimen employed in trouble shooting the machine.

During the process errors in the meagre documentation came to light and the circuit diagram duly updated. if interested details may be found here:

www.minervasmiscellany.com

Hope this may be of some use to anyone  experiencing electrical problems

regards


terry   T

AKA Minerva

[John Rudd]

Terry,

Welcome to the group and nice write up there 

As an aside, the comments apply equally to the minimill series as well, the elctrics are very similar if not the same....

[saw]

I have just talked to my supplies and I have order a new lathe, the old one is for my sun in law to try to fix. 
I will say thanks to al of you, trying to help me, but I feel that this is the best way.

[minerva]

John,
thanks for the comment, as you no doubt noticed my mill is also of the Real Bull stable and one of the main reasons for my choice was that of commonality with regard to the electrics, although touch wood so far all is well. (there I've said it) I hope it stays that way. I have just upgraded my lathe  to a Chester 920 which is a machine of somewhat greater capacity but is belt driven with a gearbox which facilitates screw cutting so I'm hoping electrical problems will be a thing of the past. I'm currently making a QCTP  and so far am well pleased with the results.
Regards to all,
TerryT

[saw]

Hi all, here is a happy news from me, my new lathe has arrive. 
I shell only do some adjustment, as a new lathe always require, and then I will contion to build. 

[John Rudd]

Benni,

That is good news...Just in time for Christmas too.......

[Rob.Wilson]

Nice one Benni 

What you going to build next ?


Rob

[sbwhart]

Well done Beni happy new lathe,

What you going to make ?.

Stew

[saw]

Rob Wilson Well first I will finish doing the reversing gear to my D10, then I am thinking about Stuart Compound. 
Thanks all and I wish a Merry Christmas and Happy New Year to all of you. 

[Rob.Wilson]

This one Benni   ,,   http://www.stuartmodels.com/inprod_det.cfm/section/casting/mod_id/62  ? 


Rob

[saw]

Thats right Rob, I take the bull by the horns. 

[arnoldb]

  Good to hear you have a lathe again Benni 

That's a nice engine you want to build as well 

 , Arnold

[Rob.Wilson]

Thats right Rob, I take the bull by the horns. 

Nice looking engine  Benni ,,,,,,,,,    ,,,,, looks like it will keep you out of trouble for a wile 


Rob

[saw]

Nice looking engine  Benni ,,,,,,,,,    ,,,,, looks like it will keep you out of trouble for a wile 

Trouble what's that, can I eat it?