FANUC CRT display issues - Page 4
Close
Login to Your Account
Page 4 of 5 FirstFirst ... 2345 LastLast
Results 61 to 80 of 84
  1. #61
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Exactly! If I buy another machine I don't think it is going to be entry-level.

    So it'll only cost me $32 to get a replacement power supply off Amazon from the OE supplier, however they do only rate these at 150mV Vpp for ripple. They also caution to not use more than 220V on the input! I may just do it to see what's what. Get it? Like "Watts Watt?" Eeeehhh, nevermind.

  2. #62
    Join Date
    Jan 2014
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    4,731
    Post Thanks / Like
    Likes (Given)
    857
    Likes (Received)
    2565

    Default

    Quote Originally Posted by Rick Finsta View Post
    ......however they do only rate these at 150mV Vpp for ripple. ......
    I would bet that the DC-DC converter in the CNC has some filtering/power conditioning going on. Even for the 24VDC out at CP2 for I/O use.

    Here are the performance specs from Fanuc for the power supply....
    Attached Thumbnails Attached Thumbnails 0i-b-power-supply-requirements.jpg  

  3. #63
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Are they saying as long as the ripple voltage is within that 4.8V range you're fine? LOL

  4. #64
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Quote Originally Posted by Vancbiker View Post
    Certainly worth trying. Unplug the power to the CRT and CNC before you power it up with the cap installed. Measure the DC voltage with the cap in place and make sure that filtering the ripple does not raise the voltage much.
    Well I must have miscalculated because I get low noise (basically the noise from the line only) but only 0.6V out the back side of my shunt. Back to the drawing board...

  5. #65
    Join Date
    Jan 2014
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    4,731
    Post Thanks / Like
    Likes (Given)
    857
    Likes (Received)
    2565

    Default

    Quote Originally Posted by Rick Finsta View Post
    Are they saying as long as the ripple voltage is within that 4.8V range you're fine? LOL
    That's how I read it. That is why in an earlier post I said there must be some "conditioning" happening in the DC-DC module inside the CNC. I can imagine the CNC reliably using the 24V with that much ripple and noise.

    I'm pretty sure that Fanuc must have eliminated their own power supply and allowed users to spec a third party supply as a cost cutting measure. Something to let builders still say they are using a Fanuc control while being able to hit a price point. Subbing a $35 generic supply for a $500 proprietary supply.....

  6. #66
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Alright I swapped the new AC/DC 24V switching power supply (GS1) in, and while the output does look quite a bit cleaner, it doesn't fix the monitor issue. I'm packing up the whole lot of parts and shipping them down to Radwell for testing and repair.

    If there isn't something wrong on the main board or CPU board, then I am at a loss. I suppose while I'm at it I will send the LCD monitor in as well just in case it is something with that.

    I'm seriously considering cutting my losses and selling the machine.

    Thanks again for the help, everyone.

  7. #67
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    So to make another joke at FANUC's expense, the regional aftermarket support manager just stopped by since he saw I opened an account but they didn't have record of an installation, and he likes to stop by new customers. Like everything FANUC, behind the times because I sure could have used the information I got from him last Thursday! LOL

    Anyways, super cool of him to take the time and I found out they have a test/wash service that they offer for a few hundred bucks I could have used in this case to find the culprit quickly without the need to throw parts at the problem. He also said he's pretty confident it is the CPU card based on what he has seen in the past (when I told him I could get four screens at once on the CRT he said "Oh, CPU.") but it might be the main board.

    Radwell has my stuff so we'll see what they come back with but I am going to follow up this afternoon to let them know I'll pay the expedite fee for sure.

  8. #68
    Join Date
    Apr 2004
    Country
    DENMARK
    Posts
    1,290
    Post Thanks / Like
    Likes (Given)
    6756
    Likes (Received)
    1007

    Default

    Did you ever get this fixed?

  9. #69
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Well...

    I sent everything off to Radwell and then ended up getting really nervous about how they were handling it. The salesman listed everything I was sending on the quote so we'd have a record of what was sent, but then when it got there I got a "sure we can fix it and it'll be $XXXX.XX (which was the total of the "quote" not just the total for the two components I wanted tested first). I told them I had only wanted the two parts tested and the rest was so I wouldn't have to make a second shipment if it wasn't the CPU or Main boards. So then they say "well we can look at those but can't fix anything proprietary on them." Not sure why they didn't say that on the phone in the first place. They also seemed confused about how I sent in my spares for potential credit or p

    So I had them send everything back so I can just send it to FANUC (which I should have done in the first place in hindsight). But here we are almost two weeks later and I don't have a shipping confirmation or my boards back. In the meantime I still have a few orders sitting here that I can't make. I do have a customer whose equipment I can use if I get any time-sensitive orders in (since the orders I have aren't due until next spring, really).

    I'm not pointing any fingers at them, to be clear. This is my first time doing something like this and I may have grossly misunderstood the "normal" process for these things and confused them in so doing.

  10. #70
    Join Date
    Oct 2009
    Location
    Oregon
    Posts
    4,464
    Post Thanks / Like
    Likes (Given)
    4807
    Likes (Received)
    2313

    Default

    Next time take that weird Fanuc number on the board and type it into Ebay. When you find a close match offer the seller 10% of their asking price. When it shows up pop it in and see what happens.

    Usually fixes the problem.

  11. Likes Rick Finsta liked this post
  12. #71
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    It never occurred to me to send in lowball offers for the parts from china.

  13. #72
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Well none of the Chinese sellers took any lowball offers, but at this point I have replaced every single component in the signal chain for the screen, with the possible exception of the backplane (which I do not believe to actually be in the signal chain).

    I've got a tech coming over tomorrow to get a fresh set of eyes on this and I'm going to try to whip up some sort of VGA signal generator so maybe I can start moving backwards to see what is going on. Everyone from FANUC and all the local techs are scratching their heads at this one.

    To summarize:
    New screen (also, original screen is tested and works)
    New Cable
    New Video Driver Board
    New 24V power supply
    New mainboard power supply
    New CPU board
    New Mainboard

    I have a meeting to get a bunch of RFQs on Monday and I'm not sure what to say.

  14. #73
    Join Date
    Aug 2010
    Location
    Medina OH
    Posts
    2,039
    Post Thanks / Like
    Likes (Given)
    193
    Likes (Received)
    960

    Default

    I heard brother has some great end of the year deals going. . .

  15. #74
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    I was running an S700X1 yesterday morning at a customer's place... trust me I want to like you can't imagine. Hell this repair is probably a third to half of the way to being a downpayment to Yamazen...

    I might just rent spindle time on his machine while I figure this out. If I had the space I would mothball this thing for a control retrofit or something. The iron is solid.

  16. #75
    Join Date
    Mar 2014
    Country
    CANADA
    State/Province
    Ontario
    Posts
    804
    Post Thanks / Like
    Likes (Given)
    804
    Likes (Received)
    161

    Default

    I hope you get it figured out and it doesn't cost to much! I went through some lathe problems 2 years ago so i feel your pain.

  17. #76
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Tech just left scratching his head. He has a spare monitor so we're going to hook that up just to make sure it isn't some crazy fluke and the monitor(s) are both intermittently bad. Otherwise I may have to call FANUC to see what my options are.

    I'm texting my Yamazen salesman.

  18. #77
    Join Date
    Aug 2010
    Location
    Medina OH
    Posts
    2,039
    Post Thanks / Like
    Likes (Given)
    193
    Likes (Received)
    960

    Default

    Quote Originally Posted by Rick Finsta View Post
    I'm texting my Yamazen salesman.


    Enjoy!

  19. #78
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    My Yamazen salesman is no longer with Yamazen Gaaah!

    I'm reaching out through some channels to figure out who to contact. Our local sales guy reportedly wasn't great (I never dealt with him) but we were a house account at the old shop and I may want to keep that arrangement.

  20. #79
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    Wisconsin
    Posts
    807
    Post Thanks / Like
    Likes (Given)
    133
    Likes (Received)
    442

    Default

    Local guy is stopping by tomorrow with a know good CRT and a brand new replacement LCD.

    This is ridiculous; if I wasn't running machines at client sites I'd have forgotten how to by now.

  21. Likes aarongough liked this post
  22. #80
    Join Date
    Oct 2014
    Country
    CANADA
    State/Province
    Ontario
    Posts
    1,275
    Post Thanks / Like
    Likes (Given)
    757
    Likes (Received)
    1044

    Default

    Quote Originally Posted by Rick Finsta View Post
    Local guy is stopping by tomorrow with a know good CRT and a brand new replacement LCD.

    This is ridiculous; if I wasn't running machines at client sites I'd have forgotten how to by now.
    I feel for you mate, sounds like a rough situation... Hopefully you can get it sorted out.

    Have you considered whether electrical interference of some kind might be causing the issue? Old school analog video signals are definitely susceptible to outside noise. Has someone nearby installed an EDM or something around the time this issue started?


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •