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  • Re: Beogram 4000 parts and restoration

    Discovered that this is a slow blow fuse "traeg" is Danish for slow so that all makes sense now. Have replaced fuse and functionality is as before.
    Posted to BeoGram (Forum) by Paul G on Thu, Apr 8 2021
  • Re: Beogram 4000 parts and restoration

    HELP! Help with defining potentiometers on PC board 1.for my restoration I want to replace some of the "Trim Pots" on board 1 and have the ratings but on searching online was overawed by the range of possibilities. Using my normal supplier in the UK "CPC" I searched for Single Turn, Top Adjust 50K potentiometer and got a range of 6 different components all slightly different. Carbon Composite, Cernet Square and others all with variations. Can someone give me the type I should
    Posted to BeoGram (Forum) by Paul G on Thu, Apr 8 2021
  • Re: Beogram 4000 parts and restoration

    Can anyone identify this part? I was removing PSB 2 to replace some capacitors and noticed the yellow sleeve covering this "fuse??" was very flexible. I removed the sleeve to discover the glass tube had broken and the item had split as shown. It does not appear to be listed on the parts list for Board 2 but on the Circuit diagram there is a Fuse? marked "0,4a traeg" which connects to one of the secondry transformer windings? Does anyone know if this is a fuse what rating it is
    Posted to BeoGram (Forum) by Paul G on Fri, Mar 26 2021
  • Re: Beogram 4000 parts and restoration

    I've just discovered an interesting wiring situation on the Beogram 4000 I am restoring. The picture below shows the way the carriage motor is wired and I carefully marked this when I removed the motor wiring to clean the carriage switches. I have some missing functions on the carriage drive and record detection but was leaving these until I have cleaned switches and replaced Caps and etc. However I was looking at the wiring on the carriage drive and checking it with the service manual and discovered
    Posted to BeoGram (Forum) by Paul G on Thu, Mar 25 2021
  • Re: Beogram 4000 parts and restoration

    My Beogram 4000 Type 5215 has the 2 x 24V scale illumination lights in parallel on the PCB board numbered 8009015. I wanted to change this to 12V lamps so as to use Beolovers 12V LED lights. The original circuit board illustration that came with the 4000 in 1973 is shown below. I disconnected one of the 100 ohm resistors and moved the post with the 24V supply (red wire) to the position it occupied at the end of the diagonal track to the RH light. The two bulb positions now become a series connection
    Posted to BeoGram (Forum) by Paul G on Tue, Mar 23 2021
  • Re: Beogram 4000 parts and restoration

    My next job is to change all the capacitors in my 1973 Beogram 4000. This seems to be recommended by the experienced restorers on the site and reading up on the subjject capacitors which are 50+ years old are always likely to fail at any time. However I am now entering my edge of experience. I started by replacing all the resevoir and motor capacitors because they are bigger, appeared easier to get at and Beolover does a full 6 (actually 7) capacitor replacement kit together with a 3D printed "holder"
    Posted to BeoGram (Forum) by Paul G on Tue, Mar 23 2021
  • Re: Beogram 4000 parts and restoration

    Orava, for OC3 I installed 3300 μF, it is down in my technical manual as 3000 μF at 50V OC7 was 2 x 300 μF joined in series. Beolover supplied the housing and the capacitors so they fitted the housing.
    Posted to BeoGram (Forum) by Paul G on Tue, Mar 23 2021
  • 4000 Scale Light PCBy Modification

    Posted to Vintage B&O Products (Pre-1980) (MediaGallery) by Paul G on Sun, Mar 21 2021
  • PCB3 Scale Light Original 8009015

    Posted to Vintage B&O Products (Pre-1980) (MediaGallery) by Paul G on Sun, Mar 21 2021
  • Beogram 4000 Type 5215

    Posted to Vintage B&O Products (Pre-1980) (MediaGallery) by Paul G on Sun, Mar 21 2021
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