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  • Beomaster 900K - Refurbishment

    Hi all! So I recently acquired a Beomaster 900K type 2232. I would like to carry out some refurbishment work on the unit - electronically as well as cosmetically. It's currently working but does have issues. So a few questions if I may 1) The bulbs have all failed. They are listed in the schematics as 6.3v / 0.3a for the dial and 19v / 0.1a for the stereo indicator. Would 6.5v / 0.3a bulbs be acceptable for the dial and 24v / 0.125a for the stereo indicator? 2) The unit sounds OK but bass distorts
    Posted to Vintage Products (Forum) by machineage on Wed, Sep 13 2017
    Filed under: Beomaster 900K
  • Re: Beolit 600 - No Reception Below 95MHz

    UPDATE!! OK so I thought I would take a look inside the tuning module... I removed both covers and checked the solder joints which all looked nice & bright. Then I tapped around - and when I tapped the tuning cap some crackles came forth!! I tapped a bit more & tuned down below 95MHz - et voila - stations!! I just re-flowed all of the joints on the board and the connections to the tuning cap and it all now seems to be working fine! All the stations are coming in loud & clear below 95MHz
    Posted to Vintage Products (Forum) by machineage on Wed, Jun 21 2017
  • Re: Beolit 600 - No Reception Below 95MHz

    Hi Nick Thanks for the reply! OK I tried it with a mains adaptor - no change. So I checked the voltages. There isn't a dark blue wire going into the tuner module - but there is a violet wire - no voltage on that. However there is 6.9v on the red wire & 5.9v on the orange wire. I replaced the 500uF/6v supply decoupling cap (numbered 16 on the schematic) with the nearest I had lying around (470uF/16v) and that made no difference either
    Posted to Vintage Products (Forum) by machineage on Wed, Jun 21 2017
  • Re: Beolit 600 - No Reception Below 95MHz

    Hi Nick Thanks for the reply! The lowest station I can currently receive on the Beolit 600 on FM is a local station ‘Signal 1’ broadcasting on 96.4 - this is however displaying as around 95.7 on the scale and comes in very weakly. Above that the stations come in loud and clear. I can receive lots of other stations loud & clear below 95 down to Radio 2 at 88.3 on all of my other radios. A strong signal is normally received from BBC Radio Stoke locally at 94.6 which is silent on the
    Posted to Vintage Products (Forum) by machineage on Wed, Jun 21 2017
  • Beolit 600 - No Reception Below 95MHz

    Hi all! Well thanks to the advice here I now have output from my Beolit 600! However the problem now is that there is no reception on FM below 95MHz. Above that the stations come in loud and clear albeit slightly out from the tuning scale. Reception on MW & LW is fine across the scale. Any ideas anyone? Thanks!
    Posted to Vintage Products (Forum) by machineage on Wed, Jun 21 2017
  • Re: Beolit 600 - Distorted Audio

    OK so the output transistors arrived - I also ordered a replacement 1000uF /10V cap as it was reading a fair way beyond its tolerance. Popped them in and it sprung into life! The output is very loud and clear. The volume is actually high even at 2 on the volume scale - heading up toward 4-5 brings about distortion due to the very high output. Is this normal? Alas another issue has revealed itself. On FM I can only receive stations above 95MHz. Below that is's spookily silent. No such problems
    Posted to Vintage Products (Forum) by machineage on Wed, Jun 14 2017
  • Re: Beolit 600 - Distorted Audio

    Thanks Martin On investigation I found the leads to both output transistors were corroded - so much in the case of the AC117 that they just broke away from the base of the transistor on touch. So I need to order these. I'll let you know how I get on!
    Posted to Vintage Products (Forum) by machineage on Sat, Jun 10 2017
  • Beolit 600 - Distorted Audio

    Hi all! I just bought a Beolit 600 in superficially good condition! However the audio output isn't what it should be. The output is distorted if you raise the volume control above 2 - and becomes increasingly distorted without any increase in amplitude. Below 2 it's distortion free albeit very quiet. I thought it may be the speaker (doom!) but I'm glad to report the speaker is fine. The output is the same though the DIN socket - and the speaker is fine in another radio. Any pointers
    Posted to Vintage Products (Forum) by machineage on Fri, Jun 9 2017
    Filed under: Beolit 600
  • Beovox C30 - Capacitors

    Hi all! So I took delivery today of my first ever pair of Beovox C30 loudspeakers. I intended replacing the capacitors and downloaded the service manual in advance of this. The schematic in the manual show just one 6.8uF capacitor for the C30 & C40 - however upon opening mine they have a couple of capacitors - a 8uF / 63v & 15uF / 40v. I take it this is normal? Thanks!
    Posted to The Workbench (Forum) by machineage on Fri, Jun 2 2017
  • Re: Boevox Panel 5000 Capacitors - Replacement

    Hi all That's great thanks! I was looking or a schematic but was unable to locate one - so seeing this is great. I will replace them anyway now seeing as I am in the process of refurbishing them. I can purchase some polypropylene film caps for crossover use fairly cheaply from a manufacturer in the UK. I notice on the schematic the second woofer is fed by an inductor - and indeed there is a large square transformer like inductor inside the speakers. I always thought the woofers shared the same
    Posted to The Workbench (Forum) by machineage on Thu, Jan 12 2017
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