Help please. Dip switches and mach 3 settings

[dazp1976]

Well an update.
Just tested my old socket 478 pc's and both psu's are dead. Go figure.
They want £23 for another power supply (used) (SFF type).
Just bought a Dell 780 myself with 4GB ram, win 10, for less than £10 more.
I have a sata drive lying around so when it comes I'll be installing that in the 2nd bay and running XP leaving win 10 untouched just in case for re-sale purposes.
If I end up having dual core issues I'll be selling the core 2 and getting a Celeron the same as my other (both socket 775).
Ugh!.

[Radu_Andrei]

I guess I.m the only one naive enough to believe that you just turn on the cnc and it will work like a charm for years. In truth it seems all kind of issues come up.
Hope you.ll get your new dell pc work just fine, and dual core it.s not the problem. :)

[cropwell]

Just tested my old socket 478 pc's and both psu's are dead. Go figure.

Probably the capacitors have gone. Especially if they have just been sitting doing nothing for years. MoBos suffer the same, look at the big electrolytics to see if they are bulging.

Andrei - it looks as though you have a rubbish supply from the pole. You already have an earth fault, maybe you have a poor supply due to a corroded connection.

Clive - is it not possible to put some big caps on the output of the SMPS's. Don't they have quite a wide input voltage range anyway ?

[Clive S]

Clive - is it not possible to put some big caps on the output of the SMPS's. Don't they have quite a wide input voltage range anyway ?

I was going to suggest that but never done it with SMPS's But would be worth a go.

[Radu_Andrei]

Clive mentioned a toroidal power supply in order to fix the rubbishness of the pole supply. From what I read online, it.s a transformer, a bridge diode and a few caps, with a DC output.
Does this not mean that I.m actually replacing my switching power supplies that came with the cnc kit?

[cropwell]

Clive mentioned a toroidal power supply in order to fix the rubbishness of the pole supply. From what I read online, it.s a transformer, a bridge diode and a few caps, with a DC output.
Does this not mean that I.m actually replacing my switching power supplies that came with the cnc kit?

Andrei - don't go chucking money about until we can get a proper understanding of the problem.

[Radu_Andrei]

Hi Rob.
At this point I can only exclude one problem at a time, and each modification requires money in a form or another. Not my favorite approach, but that.s how it is.
I think I just ˇˇresolvedˇˇ the desktop pc, as I did try installing windows xp sp3 x86 on a separate partition, and it failed at first attempt, and then it seemed to go through, and now the pc would not load anymore. I can.t even get into Bios. It loads the first screen, and it stays like this forever. I can press Del for setup and it says it is entering setup but nothing happens, and with Tab the same thing, and f8 for Bbs popup which does nothing as well.


I installed really hard windows 7 as well a while ago. It just failed so many times, but I could repeat the process. Now I can.t. Only dvds seems to work, no usb or sd.

[john swift]

which is the boot drive ?


try booting the PC with no drives connected
and see if you can get into the bios

If you can
try connecting the DVD drive and see if it will boot from the windows installation disk

if that works
next try adding the IDE drive

and then the crucial solid state drive


if all 3 drives are connected to the IDE ribbon cables

you can only connect one master and one slave to each cable


it looks like all three drives are set to master !

if you have two master devices on one IDE ribbon cable
that could stop the motherboard from booting and take a very long time to respond to attempts to boot in to the bios

do you have 3 IDE ports ?

John