Posts by sonavor
264 total posts257 results
Looking back to the 1970's with BeoTalk
in General Discussion & Questions · Dec 6, 2023 20:21Fantastic Keith! Any other issues available that you could scan?
BEOMASTER 5500 RECEIVER - PHONO IN RCA INPUTS BROKEN
in BeoMaster · Dec 5, 2023 17:19Regarding soldering (and de-soldering) I recommend researching that. I like to use a 60/40 (tin/lead) with a no-clean resin core. An important thing is making sure you don't damage the older PCB traces with too much heat…
BEOMASTER 5500 RECEIVER - PHONO IN RCA INPUTS BROKEN
in BeoMaster · Dec 4, 2023 02:17Hi, This thread I did recently shows the disassembly and reassembly of a Beomaster 5500 receiver. I removed all of the boards for cleaning and restoration. The link starts with the last post (reassembly) but if you scrol…
Bg4002 (ac) not tracking
in BeoGram · Nov 27, 2023 03:11You will need to fix the arm lowering where it is straight (up and down) before dealing with the tracking. The arm positioning is also something that I have seen out of alignment. Interestingly, I have come across severa…
Bg4002 (ac) not tracking
in BeoGram · Nov 26, 2023 19:42Assuming that your Beogram is already electronically restored correctly and that the tracking sensor components are working (lamp and sensor), I would suspect the problem to be a misalignment of the mechanics involved. T…
Beomaster 1900 IL1 Testing
in BeoMaster · Oct 26, 2023 16:02hi traverso, IL1 or the LDR devices inside the volume control (8002293) could be the problem. Take the cover off the volume control and see if the lamp illuminates. Did you also check the contacts on the Balance control …
Beogram 4002/4 vertical mounting
in BeoGram · Oct 24, 2023 22:41Per auric "I don’t think it will function vertically. There’s nothing to hold the platter or the LP in place." Not only the platter, sub-platter and bearing would have nothing to hold them in place...but also the tonearm…
Beomaster 2400 radio hum
in BeoMaster · Aug 20, 2023 07:06If you unbolted the main PCB from the cabinet for the capacitor replacement, did you keep the FM tuner (metal box) secure? If the metal box was free to move while you were working it is possible a shield wire became disc…
Beogram 4002 Tonearm Sets Down at End of Platter With No Record
in BeoGram · Jul 26, 2023 18:17Hi John, Examine the position sensor slide scale. You might have to remove it to see what is going on. Either way, see what the second switch (that the slide scale engages...the ES switch) looks like. I have seen a coupl…
Beogram 8002 arm moves 1" then returns to stop
in BeoGram · Jul 10, 2023 19:40Yes, there is one emitter and two receiver/sensors. They are shown on the service manual schematic (1-2). You should be able to see the activity on an oscilloscope. However, since you don't clear the SO switch I would su…
Beogram 8002 arm moves 1" then returns to stop
in BeoGram · Jul 10, 2023 16:51The Beogram 800x turntables rely on the position sensors that the spindle pulley assembly passes across. When you press Play the Beogram circuity drives the spindle forward until the mechanical SO switch disengages. At t…
Beogram4000 start issues
in BeoGram · Jun 14, 2023 16:07While we definitely come across plenty of failed, original components (due to age and whatever ordeals they have suffered), the number one cause of faults is still a broken connection. Either a bad solder joint, a broken…
CX50 foam or rubber
in BeoVox · Jun 11, 2023 21:08Hi, The originals were foam type surrounds. How noticeable the difference is will be purely dependent on the listener. If you are trying to keep things to the original design then stick with foam surrounds. It would be i…
Lubricating Sintered Bearings in Beocord 8000/9000
in BeoCord · May 10, 2023 21:09I tried your "easy" motor opening method and it worked great. No more Dremel and debris from the cutting. Best tip I've received in a while. Thanks again. -sonavor
Lubricating Sintered Bearings in Beocord 8000/9000
in BeoCord · May 9, 2023 18:03Is that encoder tool something you made or is it something that can be bought? If the latter, can you post a link for it? Thanks, sonavor
Lubricating Sintered Bearings in Beocord 8000/9000
in BeoCord · May 9, 2023 05:59That is great information. I'm so glad you discovered a way around using a Dremel. That will save a bunch of time and effort. Can you go into detail of what you did for your performance measurements? Thanks, sonavor
Beoparts-Shop Beocord Belts
in General Discussion & Questions · Apr 2, 2023 19:44My suggestion for anyone collecting these vintage Beocord units is to begin the restoration with new belts from Beoparts, use the restored Beocord decks, then do a service check from time to time. That will catch any bel…
Beoparts-Shop Beocord Belts
in General Discussion & Questions · Apr 2, 2023 02:09I think the use it or lose theory fits here. Thanks for digging into the problem more. -sonavor
Beoparts-Shop Beocord Belts
in General Discussion & Questions · Mar 30, 2023 18:09The transformation into the black goo is an interesting one. I believe that happens due to the way the Beocord unit was stored. I think a belt will wear to the point of requiring replacement during regular use inside a n…
Beoparts-Shop Beocord Belts
in General Discussion & Questions · Mar 29, 2023 07:18All rubber belts will eventually wear out. How quickly is determined by their use and operating environment. The most important thing is to have faithful reproductions of the original belts which is what Martin produces.…