>

SL-X replacement PCB

Discussion in 'Marshall Amps' started by 961le, Feb 20, 2021.

  1. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    Attempted delivery today but I changed it to tomorrow when I would be available. Hopefully I can start assembly tomorrow evening. It’s all according to the final product in the box.The files I reviewed looked good before they were made. I imagine this week will have quite a few updates
     
  2. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    Splashdown
     

    Attached Files:

  3. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    the good news i have a template to check spacing and drill holes. the bad news is none of the boards are functional due to a production code written right through the copper traces. cutting them in half
     
  4. Dogs of Doom

    Dogs of Doom Moderator Staff Member

    Joined:
    Aug 2, 2012
    Messages:
    24,320
    Likes Received:
    29,453
    Location:
    Los Angeles
    :facepalm:
     
  5. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    D1E460F7-6A52-403F-A886-484FDEC7CE29.jpeg
     
    Last edited: Apr 28, 2021
  6. Dogs of Doom

    Dogs of Doom Moderator Staff Member

    Joined:
    Aug 2, 2012
    Messages:
    24,320
    Likes Received:
    29,453
    Location:
    Los Angeles
    you mean they didn't know that they were designing it to cut the 5 traces?

    makes no sense...
     
    Gunner64 likes this.
  7. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    my thoughts exactly. im so frustrated im not even angry. if it wasnt for that it looks pretty good. pretty sturdy.
     
    Gunner64 likes this.
  8. Matthews Guitars

    Matthews Guitars Well-Known Member

    Joined:
    Aug 17, 2019
    Messages:
    3,924
    Likes Received:
    5,943
    You sure shouldn't have to pay for that! I'd say FULL REFUND AND FREE REPLACEMENTS for a titanic F-up like that!

    That reminds me of the time I ordered a custom fingerboard for a guitar I was building, and when I got it, the line of inlays was about 3 degrees off axis to the centerline of the fingerboard. You could see it a mile away with your eyes closed at midnight on a moonless overcast night.

    How that got past inspection and out the door is incomprehensible to me. But the replacement was perfect.
     
    Gunner64 and Dogs of Doom like this.
  9. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    im sure they will fix it. it just takes a day to get a response. thats really been the only headache, the time difference. ive already alerted them to the problem. if my amp was down id be more antsy but it still works fine.
     
  10. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    I have checked all holes with their components. All is good. Even my designed pad for my turrets that I chose are a perfect fit. I haven’t mocked up the board to put in the chassis yet I’m too frustrated. I did put the jacks in their holes on the new board and lined it up with the amps jacks. Looks good. I learned in sheet metal school to pull from one point when laying out distances and so far it has not failed me. In a way it’s not a total loss. I just ordered 5 mock up boards. And got 6 :)
     
  11. Gunner64

    Gunner64 Emotional Support Animal Gold Supporting Member

    Joined:
    Nov 16, 2013
    Messages:
    7,138
    Likes Received:
    9,825
    Location:
    Midwest, USA
    Other than the traces that does look good. Nice work on your part!..their part makes me wonder..they do this for a living?? I mean how do you not see that? I hope they make good on them after all the work you put into it.
     
    Dogs of Doom likes this.
  12. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    I’ve made a few errors. One I noticed when I was ordering caps trying to find a certain size I chose a wrong footprint, after checking the grounds tonight I found a turret that was landlocked. I figured it was so close to another one I’ll build a bridge between them. No problem. Then on r8 the ground was landlocked. At this point I’m redoing the gerbers. I’ve done too much to settle for less than perfection. The rest of the board checked out ok except for the manufacturing issue that killed my continuity check.I have learned to watch the copper pour closely. I was so concerned with my traces running the length of the board and missing things I overlooked a couple of grounds. Silly on my part but being that this is my first time , I didnt know what to look for. i wont forget again. I am going to mock up the board and put it in the chassis this week and make sure the spacing right on. I am chalking this up to a learning experience. To be continued...
     
    Last edited: Apr 14, 2021
    FleshOnGear and Dogs of Doom like this.
  13. Brett336

    Brett336 Member

    Joined:
    Jan 26, 2018
    Messages:
    43
    Likes Received:
    64
    I am actually in the industry and it is hard to find people with the kind of experience that you are acquiring. Kudos to you for sticking with it! People over bag on PCB construction but there is a lot that goes into it to get it right. Where many of the high volume amp producers (and many consumer products producers) go wrong is being in a hurry to release to production so they can get the sales to pay back their investment. I have even been guilty of approving production and then discovering some failures in the first year from use modes that did not get enough testing. Cool project for sure!
     
  14. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    Thanks Brett and all. I’m working on it right now. I’ve fixed the resistor issue already.
     
    Last edited: Apr 12, 2021
  15. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    To the best of my knowledge all grounding issues and layout changes I wanted to make are fixed. My brain is fried I will deal with this some more tomorrow. Probably reorder later in the week. After I see what they say.
    D1D98012-E86F-4BC4-8BDC-F71E1556BC7B.jpeg
     
    Last edited: Apr 28, 2021
    Dogs of Doom likes this.
  16. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    The portion of this project that I’ve been dreading was successful. I’m very relieved. This was my biggest concern. Must have bumped the bias cap:noplease: 570E16EF-8A73-4D2D-8C1C-2183EEC26AD9.jpeg
     
    Last edited: Apr 16, 2021
    Kelia likes this.
  17. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    Rev.2 on order. Cap error fixed and I added resistor/capacitor values inside footprint for the next person who gets it when I’m gone. This week will be finishing the mounting bracket so I can assemble the board non-stop once i receive them. The unusable boards will work just right for this as no holes or drilling was altered.
     
  18. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    42989B43-D398-4248-87D8-CD3085527A30.jpeg 1E3EBFAF-1BD8-481D-8F11-0EB3AA281E2D.jpeg mock-up of the bracket after drilling holes for rivets. Waiting on boards that were finished today. Should be able to put it together pretty easy after all of the prep work done. All parts are in and ready for install. As long as the board is not faulty by their hand or mine I should have power running through it by next weekend.I think I’m going to cut the wires from the existing board and attach to the new board instead of dealing with tube sockets and new wiring.
     
    Last edited: Apr 28, 2021
  19. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    Looks good this time
     
    Last edited: Apr 28, 2021
    Dogs of Doom likes this.
  20. 961le

    961le Active Member

    Joined:
    Mar 6, 2010
    Messages:
    215
    Likes Received:
    163
    8F7C0546-BE52-48D7-AD68-83416E3551A9.jpeg
     
    Last edited: Apr 28, 2021
    Yamariv likes this.

Share This Page