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  • Re: Beogram 4002 Solenoid Not Functioning Properly

    Hello All, I found out that the problem was a faulty solenoid. I did check the parts Craig suggested but found that was not the issue. Sonavor suggested I check and see if that might be the issue and I have a spare parts table and was able to swap out the faulty solenoid. Thanks to all who posted suggestions. John
    Posted to BeoGram (Forum) by John Francis on Mon, Mar 22 2021
  • Re: Beogram 4002 Solenoid Not Functioning Properly

    Hello Craig, Thank you, again, that thread was very helpful. Now I just need to take a look at testing those transistors. I am starting to get a bit shy that I am out of my depth here. I am not at your skill level which is evident to me when I hear you talking abut using an oscilloscope in testing and measuring the coil in circuit. I can take out a transistor and test it, but I honestly don't know where to even connect the leads for a digital meter to test the coil. With this 4002 I have spent
    Posted to BeoGram (Forum) by John Francis on Tue, Feb 16 2021
  • Re: Beogram 4002 Solenoid Not Functioning Properly

    Hello Craig, Thanks so much for the follow up. I do have an issue with the tone arm, that I don’t think is related to the solenoid but I could be wrong. The problem with the tone arm is getting the arm to “float” at 0 grams. The weight will not move far enough forward when adjusted to the limit. I did disassemble the tone arm and clean and lubricate it. And I can pull the arm lifting lever at the back of the tonearm assembly and the arm will drop all the way down freely when tracking
    Posted to BeoGram (Forum) by John Francis on Mon, Feb 15 2021
  • Re: Beogram 4002 Solenoid Not Functioning Properly

    Hello Craig, Thank you for the reply, sometimes it is the simple things that throw you. But the solenoid armature and damper seem to be moving freely, so lubrication of too much or not enough doesn't seem to be the problem. I remain hopeful that someone may know what the issue is, thanks again for trying to be of help! John
    Posted to BeoGram (Forum) by John Francis on Sun, Feb 14 2021
  • Beogram 4002 type 5523 Solenoid and Damper

    Solenoid assembly for a Beogram 4002 type 5523 turntable.
  • Beogram 4002 Solenoid Not Functioning Properly

    Hello All, I hope someone on the forum can help. I have a Beogram 4002, type 5523 that I am restoring. I have it mostly operable thanks to some major assistance from member Sonavor here on the forum. I still have two problems to sort out however, I need the most help with the first and biggest issue. When I press start, the tonearm stops where it should, you hear the solenoid click and you can see the arm of the solenoid engage, but it does not stay engaged, the tonearm pops right back up without
    Posted to BeoGram (Forum) by John Francis on Sat, Feb 13 2021
  • Re: Reattaching/reassembly of Beogram 4002 Dust Cover to back piece

    Hello Tom, Yes I got it re-attached but it was not easy. I had to align the metal spring rod/wire on the rubber pads and push down to get it into place, not without some scratches. My suggestion in hindsight is tape over anything that could get scratched in the process. The scratches are minor but can’t be removed, and could have been prevented had I covered the brushed metal strip. Good luck and do as I say and not as I do. ;0) John
    Posted to BeoGram (Forum) by John Francis on Tue, Dec 1 2020
  • Re: Beogram 4002 Detector Arm Circuit Upgrade

    Hello Sonavor, I replied to your post by my email but it does not show that got posted here, I hopefully you got my message and thanks for your follow up. Not sure where I went wrong with the Mouser search for the transistor on their website, I thought I found the transistor but that it would have to be ordered from the manufacturer with a long wait time. But Thanks! John
    Posted to BeoGram (Forum) by John Francis on Sat, Oct 24 2020
  • Re: Beogram 4002 Detector Arm Circuit Upgrade

    Hello John, Thanks for pointing that out. I must have been looking at possibly an earlier blog post where Rudy had the Hfe>500 transistor specified. However the transistor he specifies the 2N5089 with an Hfe>400 is not available anywhere I can find but ebay. I searched all the usual suspects like Newark, Mouser, etc. Just ordered from ebay. I have noticed that the middle lead of the trimmer resistor and one outside leg is used to replace the fixed resistor, is the other leas just trimmed off
    Posted to BeoGram (Forum) by John Francis on Wed, Oct 21 2020
  • Beogram 4002 Detector Arm Circuit Upgrade

    Hello All, I am doing a detector arm circuit upgrade for my Beogram 4002 recommended by Beolover, and the BC547 transistor I have measures a Hfe of 420. Rudy suggests that it be over 500 and a Hfe>500 type. I have looked at various parts distributors and found BC547 with Hfe>450 and with Hfe>800 but not ones rated Hfe>500. Will the Hfe>800 work or is there someone who knows where I can get a BC547 with Hfe>500? Probably not the most informed question. John
    Posted to BeoGram (Forum) by John Francis on Wed, Oct 21 2020
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