Posts by T4000
41 total posts34 results
Beosound A1 Gen 2 only sounds if turned on with charger plugged in
in BeoSound · Nov 6, 2024 17:09I have a Beosound A1 Gen 2 that only sounds if turned on with the charger plugged in. Does anyone have experience of this issue? My failure mode analysis below. Also, does anybody know where I can get hold of the circuit…
MMC4000 vs MMC5000 – which one is best?
in BeoGram · Jan 4, 2022 21:23Both cartridges have been inspected by professionals and are in very good conditions, they are however not compared to each other in its performance. Thanks for your concern, though.
MMC4000 vs MMC5000 – which one is best?
in BeoGram · Jan 2, 2022 17:42I'm currently enjoying my vinyls on a Beogram 4002 (no quadro) and I have the pleasure to select between two different cartridges. One MMC 4000 and one MMC 5000. In my ears they sound more or less the same. What is your …
Spare part search: Beogram 4000 Contact Spring / Contact bridge
in Imported Content (Unmapped) · Sept 17, 2021 18:08Hi, Unfortunately, disaster hit my Beogram 4000. With the best of intentions, I wanted to get all my (not very reliable) Beogram 4000 Contact Springs and Contact bridges gold plated. I had these analyzed and it was confi…
Spare part search: Beogram 4000 Contact Spring / Contact bridge
in Imported Content (Unmapped) · Sept 17, 2021 18:06Hi, Unfortunately, disaster hit my Beogram 4000. With the best of intentions, I wanted to get all my (not very reliable) Beogram 4000 Contact Springs and Contact bridges gold plated. I had these analyzed and it was confi…
Beogram 4000, gold plating the leaf switches
in Imported Content (Unmapped) · Jan 31, 2021 17:54Hi Craig, Thanks for input. I've seen those kits online as well, but I lack the knowledge of how to do it, is not too found of the toxic liquids that has to be recycled somehow, and I also don't want to risk getting too …
Beogram 4000, gold plating the leaf switches
in Imported Content (Unmapped) · Jan 26, 2021 20:07Hi guys, As I already have these suckers desoldered for deep cleaning, I thought I might as well get them gold plated. I don't have any equipment to do this myself, so I'm in contact with a company in Stockholm who can d…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 20, 2021 20:04Hi sonavor, Jacques and Heath Robinson, The adjustment of the Diaphragm is now done. Screw A was needed. I would assume that fixed both error #3 and #4, right? That would give the updated error status: Error #1: Tone arm…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 20, 2021 08:27Hi sonavor, Yes, the progress is good now. Feels good as well. The lowering limit position is adjusted since before. The tone arm is lowering, but it doesn't stay there. The tracking sensor is pushing it inwards, so it s…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 19, 2021 19:55Hi sonavor, The counterweight is now adjusted so it is well free moving vertically (similar distance as on your Beogram 4000), and the tracking force knob is re-calibrated. The B&O tracking force gauge was used to set th…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 19, 2021 14:53Hi sonavor, Bingo!👍 So, I first noticed that the error (#5, listed below) disappeared when I opened up the control panel. Same as last time (a month ago, if you recall). I now measured all switches again (at the wire pi…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 18, 2021 20:42Hi sonavor, I did check the leaf contacts in the control panel before. Nov 25: " Tonight, I opened up the control panel to measure the button switches. They are all according to spec. I paid extra attention to >> and OFF…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 18, 2021 16:59Hi sonavor, I tried to configure the oscilloscope the same way you did, and here are the results during Error #5* Config at first pic (same voltage range as your oscilloscope) Ch1: FF CH2: /Q0 CH3: /Q2 CH4: FR Config at …
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 7, 2021 21:39Hi sonavor, OK, thanks. Then I'll await your measurements. Regarding the tonearm, are there any pictures online for this adjustment? I can not recall I've seen it on Beolover. Per
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 7, 2021 18:48Hi sonavor, I saw now that the probe for Ch2 had accitently slided from 10x to 1x (the scope is still set to 10x). Do you want me to measure again? Regarding the tonearm balance: "Were you making the zero balance adjustm…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 7, 2021 16:54Hi sonavor, OK, I'll include the error descriptions in each post from now on. Base of 1TR25 is on Channel 1, and 1TR34 on Channel 2 during Error #5*: Emitter of 1TR28/1TR29 on Channel 1. Emitter of 1TR30/1TR31 on Channel…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Jan 6, 2021 16:51Hi sonavor and Keith, Happy new year! And thanks for your interest in my Beogram! I'm very grateful for this, I can tell you. I hope the below information can give you some clues. Please let me know =) I manage to borrow…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Dec 13, 2020 16:56Hi sonavor, Correct. Perfect balance is unfortunately very close to whenthe tonearm base is too close to the counterweight. Slightest move of the adjustment screw, and the arm is stuck. Anyway... Well, current status is …
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Dec 13, 2020 13:23[quote user="sonavor"]Did someone move the tonearm counterweight too close to the tonearm base so it won't pivot down? [/quote] Hi sovanor, Me and my Beogram needed a break from each other. Now, I'm back. The tonearm cou…
Beogram 4000 malfunction after shipment
in Imported Content (Unmapped) · Dec 1, 2020 19:08Hi, That makes us 2. Error #5 is now intermittent, yes. Sadly. The tone arm is not balancing anymore, it is stiff, regarless of solenoid position (error #6). Somethign might have happened when I reinstalled the cover a f…