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Machine was working so doubt it will be Charge pump unless the Parallel port as gone Tits up.! (Which does happen)

Alan charge pump is safety function where the G540 will only turn on it's...

http://www.mycncuk.com/threads/8613-CNC-Mahine-not-working-HELP-ADVICE-NEEDED-PLEASE!!!!

You should check posts #3,#4, and #8 which suggest you short out the e-stop pins on the break out board. ...

Depending upon configuration E-stop can be caused by:

Pressing e-stop button(s) - but you've checked this
Hitting one of the X, Y, or Z limits at the end of travel
A broken cable anywhere in the...

Start with the PC side:
-LPT cables- the most likely culprit. had many times problems, check them with multimeter -fine, later problem. basically change the cable to check
-Mach 3 , clean reinstall...

That will be the problem, the standard MDF will always fur as the core of the material is not dense enough for routing to a good finish, you will need something like medite MR or MRND teh MR...

Those types of mdf are not of the best quality mdf is made in various grades Caber, Medite or Scandia etc. do a google search. Try here http://www.lathamtimber.co.uk/ProductDetail.331.html ...

Al I would love to help you out but Lincoln is a bit to far for me to travel

James

Just not enough information.
What router, has the ports and pins been setup ? we need more info.