[mikemike^3]

Hello,

I have a 1992 Haas vf-2 that I am about to melt down for scrap and build a toilet with.

About 3 weeks ago I turned on my machine and all I saw on the screen was snow. In the top left was a blinking square kind of like a DOS prompt.

I left the machine alone for about 3 days and the powered it again and it worked!

But yesterday the same thing happend. I have a snowy screen with a flashing DOS square in the top left.

Ohh and even when I push buttons it does not beep or do anything.....

Any help?

I can see the plunger down the hall.........

:drowning::drowning::drowning::drowning::drowning:

[Geof]

Have you checked the power supply for the main control board?

[mikemike^3]

Hello, I have checked the powersupply, but there are many of them, can you point me in the right direction, I was on the phone with the tech and the power to each supply is there....



Thank you for the reply

[Matt@RFR]

Does a simple power down / power up clear the screen? Mine does that occasionally, and has since day one. Takes a minute to deal with.

[erd39030]

Before you make your toilet
could you read all the EPROMS of the processor board and email them to me,
please?

We have a 1990 VF-1 that could make a nice toilet too... :devious:


This are the symptoms:

It hangs out at random.

I think that the EPROM might be corrupted, because:
1) If I press the Alarm button twice, the screen shows garbage.
2) When the mill freezes the RUN led of the processor board goes out.
3) It has new processor & video boards, but with the original EPROM
4) I still freezes with all memory and parameters erased, and with all servos and encoders disconnected.
5) I read all the EPROMs, burned them in new chips, still the same.

But the fact that it does not freeze always at the same point tells me that it is not a software issue. Can it be?

Any ideas?

Has anybody ever attempted to replace the Haas boards with a PC? (Mach3, EMC2)

Regards:
Everardo Rascon
Auto-Tec

[BigNizzy]

My money would be on the power supply.

It looks like a PC power supply (because it is) but it has slightly modified internals. Haas do a replacement.

[mikemike^3]

Before you make your toilet
could you read all the EPROMS of the processor board and email them to me,
please?

We have a 1990 VF-1 that could make a nice toilet too... :devious:


This are the symptoms:

It hangs out at random.

I think that the EPROM might be corrupted, because:
1) If I press the Alarm button twice, the screen shows garbage.
2) When the mill freezes the RUN led of the processor board goes out.
3) It has new processor & video boards, but with the original EPROM
4) I still freezes with all memory and parameters erased, and with all servos and encoders disconnected.
5) I read all the EPROMs, burned them in new chips, still the same.

But the fact that it does not freeze always at the same point tells me that it is not a software issue. Can it be?

Any ideas?

Has anybody ever attempted to replace the Haas boards with a PC? (Mach3, EMC2)

Regards:
Everardo Rascon
Auto-Tec

If you show me how to download the eeproms I will send it to you, I have rs232 port also...

[mikemike^3]

Does a simple power down / power up clear the screen? Mine does that occasionally, and has since day one. Takes a minute to deal with.

Hello, no powerup/down does not fix the issue.

[Joe S.]

A word of caution:
Switching power supplies (as opposed to linear type ) require a load any time they are powered up and WILL usually go up in smoke if operated without a load. Some of the newer ones have internal load resistors to protect them but not all.

[erd39030]

A word of caution:
Switching power supplies (as opposed to linear type ) require a load any time they are powered up and WILL usually go up in smoke if operated without a load. Some of the newer ones have internal load resistors to protect them but not all.

Wow!

There´s always something new under the sun.

[iamhaastech]

I'm betting on power supply just fixed a lathe a couple days ago same prob, a new on from hfo is 350.00$ and it will replace two of the power supply's and will power the mocon boards making the machine a ill more simpler. Sounds like the power supply is taking a sh$& they will be bad at 11.5 volts the mocon boards and video boards are picky. Also check your dc buss should be around 340 vdc and check to make sure the machine is phased right this is vary hard on the machines drives, andddddd also check to make sure the 230 voltage is on the right taps on the main power supply in the bottom right of the power cabinet. Hope this helps

[sagespecialized]

mikemike^3

I sent you a PM.

[amishx64]

Mike, is there any correlation between temperature in the shop and when the machine works / doesn't work. In cold weather, metal shrinks. Think solder joints, etc.

Just an idea.