Haas VF-3 Won't start up

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 19, 2015

• #1

I'm looking for some help troubleshooting the cause. The machine was sitting idle while I was setting up on another mill ten feet away, when I heard it beep(like when you press the power on button). When I looked at the screen it was blank and the monitor power light was on as well as the light inside the machine. I tried powering off then back on but it just does the same thing. I've checked the voltages everywhere I could think of everything seems to be getting power. my only guess is the one of the motherboards for the computing end.

 

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 19, 2015

• #2

Does anybody know the boot process? The machine is a 95.

 

C

Co2 mech

Cast Iron

Joined

Mar 28, 2009

Location

Nebraska, USA

• Jan 19, 2015

• #3

May be the monitor took a dump?
Regards

 

H

haastec

Hot Rolled

Joined

Mar 8, 2010

Location

Southwest, USA

• Jan 19, 2015

• #4

Co2 mech said:

May be the monitor took a dump?
Regards

Click to expand...

Yep, this sounds reasonable.
Try pressing RESET or CANCEL and check if you hear any beeping.

Also, make sure you have all your low voltage power going to the Mocon, Video, and Processor pcb's (Upper Left; +/-12vdc & +5vdc.

Good luck!

 

G

gixxergary

Aluminum

Joined

May 4, 2011

Location

wisconsin

• Jan 19, 2015

• #5

Check all of the little white breaker switches in the back. Ive had this happen, and found one to be off, for what ever reason. Could be that simple. If you dont have these switches, depending on year, see if you have a fuse light on in the back. Haas used to use a ton of 10 and 20 amp glass fuses.

 

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 19, 2015

• #6

I tried to reset and power up restart first but got nothing no beeps or anything from control. So I checked for blown fuses ohmed them all all checked out. I also checked for power everywhere I could but everything checks good.

 

S

sagespecialized

Cast Iron

Joined

Jun 3, 2008

Location

Chatsworth, Ca.

• Jan 19, 2015

• #7

Swap monitors from one machine to another and see if the down machine comes back up...then you have a monitor issue. Mine have gone out like that. One minute they work then pOOF.....

One you pull the back of the control off it simply unplugs..

 

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 20, 2015

• #8

I wish that I could switch monitors but the other machine is a 10/2014 and the one I have problems with is a 7/95.

 

H

haastec

Hot Rolled

Joined

Mar 8, 2010

Location

Southwest, USA

• Jan 20, 2015

• #9

Milright said:

I also checked for power everywhere I could but everything checks good.

Click to expand...

This is a bit vague. What did you check exactly? What were your readings?
In the electrical cabinet, what has power and what does not?
Do any of the pcb's have any lights on?
We need details and specifics in order to help?

I don't know your skill level with troubleshooting, but if this is over your head (not trying to insult), it may be time to call in a tech.

 

Last edited: Jan 20, 2015

T

tc1999

Hot Rolled

Joined

Jan 9, 2009

Location

ID, USA

• Jan 20, 2015

• #10

sagespecialized said:

One minute they work then pOOF.....

Click to expand...

Milright said:

I wish that I could switch monitors but the other machine is a 10/2014 and the one I have problems with is a 7/95.

Click to expand...

The newer monitors will die quick...however since you now mention that the machine is a 1995 I doubt it is the monitor as those will slowly die/fade/get blurry...before they die normally.

I'd guess it is a board also...but you may need a tech at this point.

 

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 21, 2015

• #11

No offense taken, haastec. I don't have much experience with electrical problems, I mostly dealt with mechanical issues. I checked the main 3 phase incoming at the machine it's between 238-244 across legs. The main pcb on the low voltage 4.98-5.01 and 11.98-12 high voltage was 111-113v. The servo pcb has 111-113 going to it. The I/O pcb is the only one doesn't have any lights on as far as can see. I did change the I/O pcb last year after the chip conveyor circuit got fried. A tech isn't really an option.

 

M

Milright

Plastic

Joined

Oct 8, 2012

Location

Eastern North Carolina USA

• Jan 21, 2015

• #12

I found that the CRT led and RUN led on the microprocessor pcb are not on. I am getting power to all three of those pcb's. Is there any other things to check for on the Video pcb and microprocessor pcb?