[Rainman229]

Well as my bad luck would have it at me again.

I accidentally fried something. Stupid me took to front cover off with the power on. (Not think when i did it) It sparked. The stupid quil dro hit the board. I can see a chip on the board is missing a chunk out it. When i plug it all back in everything lights up. Stop and start work all the buttons work lcd works. But spindle don't run. In cnc mode or manual. And mach 3 says e-stop active and will not come out of as long as the machine is on.

Did i just mess up that board? Or did i do more then that?

Help me please.

edit
Would not had to take the cover off if the cnc mode switch was properly soldered together. The wires shacking around on the switch is what was causing an early problem i was having with Erratic Spindle rpm's.

[syil]

Show me the pic and email to me,or syilamerica,to check have replace parts or not.
my email [email protected]

[Rainman229]

Thanks for your reply Sent you a Email With the pictures. And they are here as well
http://www.rainman229.com/DSC_1969.JPG
http://www.rainman229.com/DSC_1970.JPG

[neilw20]

On the main motor PCB check for blown tracks.
Hit us with a photo of that PCB so we know which version you have.

I have seen this problem destroy the hall sensors in the end of the motor.
They are easy to test/replace once the motor uis removed.

It is easy to hook up a 9v battery to test them while the motor is still installed.
Show us a photo first please.

The chip with top blown off is LM324 quad opamp.

Attached is a circuit diagram.

Follow the 6v (pin 7) track back to motor PCB. It is probably blown off on the motor PCB. Near the power transformer. Bottom left of motor PCB

[Rainman229]

Any info available on the hall sensor?As for replacement Part?

[neilw20]

Any info available on the hall sensor?As for replacement Part?

With power turned on the green connector pins SA,SA and SC. Each of the signals measured relative to GND on that connector should change as you rotate the spindle by hand.

Careful: Some of these connections can be unexpectedly at a high potential to chassis. Keep fingers WELL CLEAR.

If you are unsure, ask an experienced person trouble shooting on this machine. If all was so easy, a short at the front panel would not have destroyed things. Expect the unexpected. Fingers OFF!!

You should also find 5v on that connector that supplies the hall sensors.
All of these measurements are relative to the 0v on the green connector.

[Rainman229]

Would this problem cause the cnc stepper drives to Fault? Why?

[neilw20]

Would this problem cause the cnc stepper drives to Fault? Why?

The 5v which gets blown up supplies all the 5v logic.
Examine ALL PCBs for blown tracks.
That means removing them to see the undersides.

Take a few photos to remind you where the wires were connected.
You will almost surely find at least one blown track.

Only then can we determine what has been destroyed.

[Rainman229]

LM324 is blown off. Checking everything else now

[Rainman229]

Lm324 is the only blown track i found.

This just how my luck goes lol. Finally Get a tool changer setup that works well for my needs and i go and break something lol. While trying to fix an old issue with the cnc mode switch.

[neilw20]

Lm324 is the only blown track i found.

This just how my luck goes lol. Finally Get a tool changer setup that works well for my needs and i go and break something lol. While trying to fix an old issue with the cnc mode switch.

Even nothing else has the top blown off, almost surely something else is fried.
Using that circuit supplied, measure various points to see if voltages are as expected.

Measure the gnd and 5v to chassis to ensure that they are not at some horrible potential. Be careful. Check all supplies on all the cards, but keep away from the main motor PCB. There is lots of VERY live and LETHAL volts there.

If you are not sure ASK SOMEONE.

[Rainman229]

Hall sensor seems fine.
Here comes the big but.

Ground term and 5+ Term both read About 74 volts (there about) if checked to chassis ground . If Checked from 5+ term to ground term on PCB Reads nothing. I can't find any circuits that are visibly bad.
I'm not sure what to do next besides replace or repair the front board and then go from there.
There may be something blown in the main board but not sure how to go about finding it.

[neilw20]

As I said, be careful of high voltages. Confirmed.
Unplug the motor PCB plugs - low voltage looking stuff.

If you say +5v to ground = 0 then how can you say hall sensors are ok?

Turn it on. Carefully measure anything to chassis first, bth for AC and DC
See if you have any supply voltages on the breakout board.

12v AC in.
Are there any lights on the drivers?

DO you have 48v DC to each of the drivers?
Can you jog the axis?

Is the PC still working?
The plot thickens.... Just keep isolating everything, then get each section going one at a time. ie. Sensible voltages, axis moving. Worry about spindle last.

[Rainman229]

Found what needed to be checked in a older thread.

My findings
Hall effect unknown at the moment
7806 on main board blown Voltage reg. (guessing this would control the 5v to 6v missing at the hall)
U3 on front board blown
And possibly R19 Has issues (should have 1k resistance only reading .51)All other of same Read .99
as well as R22 should be a .47ohms Only reading .16

Break out board powers up. (acting like the e-stop is engaged)
Drivers not working. All axis down
48 volts present. Driver just red light fault when turned on.

[syil]

you try to repaire,if still can not get through ,we will sell your a complete x4 kits..solve all problem..

[Rainman229]

you try to repaire,if still can not get through ,we will sell your a complete x4 kits..solve all problem..

I'll try, Parts should be here in a few days. I'll let you know how it works out.

Can you shoot me a pm with the cost of x4 kit.

[canadamaxxer]

I'd like to know that price as well.....

[LEN1042]

I also would like to know.
Thanks,
Len

[presslab]

Here is what I posted a couple years ago when I fried my boards by doing the same thing with the scale.

http://www.cnczone.com/forums/showpo...6&postcount=37

Resistors measured in circuit might not read correctly. The only way to know for sure is to remove the resistor and test it by itself.

[Rainman229]

Here is what I posted a couple years ago when I fried my boards by doing the same thing with the scale.

http://www.cnczone.com/forums/showpo...6&postcount=37

Resistors measured in circuit might not read correctly. The only way to know for sure is to remove the resistor and test it by itself.

Thanks
Thats the old thread that helped with what to look for and were.