A(
Posts by alexb1406 (archived)
17 total posts

15 results

4002 (5501): arm won't lower
in BeoGram · Feb 24, 2010 11:04 GMT

How similar is the 4000 to the 4002? I recently had the same problem with my BG4000 and found the problem in a dry solder joint on the main board. If the circuits are similar you may be able to check voltages on the vari…

Cartridge Wiring
in The Workbench · Feb 18, 2010 16:12 GMT

Ok, thanks, I'll have to improvise. Presumably without it it may hum.

Cartridge Wiring
in The Workbench · Feb 18, 2010 11:50 GMT

Thanks Chris. This now gives me another problem as I am missing the spring clip and the screw to hold it onto the arm. I assume the clip is held in place by the same screw that holds the cartridge mount? Has anyone got a…

Cartridge Wiring
in The Workbench · Feb 18, 2010 09:37 GMT

Can anyone tell me what the pin configuration is at the rear of the MMC series cartridges is. I have just purchased another project and the enamelled copper wiring to the cartridge is all damaged and needs replacing. The…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 16, 2010 05:25 GMT

Well, we're up and running! Made the link lead up yesterday and plugged it in, and after I connected a ground lead with a couple of crocodile clips to cure the mains hum (it's missing altogether) it sounded great. Anyone…

Another seller warning and Paypal gem
in eBay - the right way! · Feb 15, 2010 11:09 GMT

Far from it! It was my credit card that provided the refund, not Paypal.

Another seller warning and Paypal gem
in eBay - the right way! · Feb 15, 2010 08:56 GMT

I have had a very similar experience when buying something outside of ebay. The item (an automotive air bag control box) was sold to me as a fully working unit - well, it didn't work, and being an auto electrician I knew…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 13, 2010 17:48 GMT

Thanks Peter, you've confirmed exactly what I thought. I'm trying to get the bits together to make up the din/rca converter lead. Our local Maplin didn't have a female din plug. I've found one in another store but I can'…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 13, 2010 05:14 GMT

Thanks Chris, I have with the SP15 the original box that it was supplied in dated 1973, cleaning brush and scales - I haven't fitted these back in the box yet as they were given to me loose but it looks like there are co…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 12, 2010 19:30 GMT

Thanks Geoff for your help so far, and everyone else for that matter, it has been invaluable. Although I'm not at home at the moment I have sneaked a few minutes away from other duties to browse the forum. I'm being summ…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 12, 2010 11:00 GMT

Thanks Geoff, photosensor now adjusted and working. Guess what! I have another problem! With everything reassembled and no record on the platter, the arm sometimes travels to the very end and then drops onto the empty pl…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 12, 2010 06:29 GMT

Hi Geoff, I think you may have misunderstood me. It now works after refitting 1R28 - hence why I suspect it was a dry solder joint. I now have a range of voltages across 1TR11 and 3v at the base of 0TR4 when the solenoid…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 12, 2010 04:37 GMT

Result! Removed 1R28 only to find the value was fine around 150ohms. Replaced it back into the board and now it works! Must have been a dry solder joint though it looked ok before I removed it. Just for the record the vo…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 12, 2010 04:01 GMT

Oops! I'm a little embarrassed here folks as it appears I do have some voltage readings at some of these points. I rechecked them again this morning and I can only suspect that my meter probably didn't have a good ground…

Beogram 4000 - Arm Doesn't Lower
in BeoGram · Feb 11, 2010 19:28 GMT

Hi Folks! After many years I am now the proud owner of my first B&O product. Hmm...one problem though...it doesn't work! Having browsed through the forum I know this topic has been covered several times, but I still can'…