Beogram 8002 dead after adjustment

in BeoGram · Feb 27, 2023 16:58 GMT

Finished! Now knowing where to look (and finally examining the schematic) I found that the solder point at the base of TR31 was elevated (see dental pick in image "pre") with the corresponding trace to R109 obviously bro…

Beogram 8002 dead after adjustment

in BeoGram · Feb 27, 2023 14:18 GMT

Thank you. I'll have another look at it for the brake. Concerning the change in arm speed it sounds like I need to ignore that one. The first 8002 I restored slows down for the search but you are correct, it doesn't need…

Beogram 8002 dead after adjustment

in BeoGram · Feb 27, 2023 00:57 GMT

I forgot to mention that I reflowed at least 40 solder points on the PCB2 board and a few points under the platter but didn't notice any changes. JM

Beogram 8002 dead after adjustment

in BeoGram · Feb 27, 2023 00:25 GMT

The second of two Beogram 8002s is one the bench. I do have a few pics to share later but these would be better if I could actually say something useful. Right now, I have restored it from no standby light to about 90+% …

Beogram 8002 dead after adjustment

in BeoGram · Feb 22, 2023 22:32 GMT

Success! A new IR emitter at the wormdrive encoder set it right. Now all functions seem to be working and it sounds great with just a used MMC3 cartridge. Hope to upgrade that soon. Sonavar's advise was extremely valuabl…

Beogram 8002 dead after adjustment

in BeoGram · Feb 15, 2023 17:14 GMT

Just a quick update on the 8002 progress. Your information was quite valuable. To make a long story short, I have seemingly appropriate voltage at all the checkpoints (R64 trimmer now maxed out) but still lack of complet…

Beogram 8002 dead after adjustment

in BeoGram · Feb 14, 2023 21:53 GMT

Obvious typo above: PCB2 not PCB23. Finally able to set close to 620 mV for <>. Beyond that, live to fight another day.

Beogram 8002 dead after adjustment

in BeoGram · Feb 14, 2023 20:19 GMT

With your help I have made some progress. I had power to the main capacitors but intermittent 5V to the PCB23 cap. Someone had already done a recap but this capacitor was loose, After replacement the unit fired up!... Ho…

Beogram 8002 dead after adjustment

in BeoGram · Feb 14, 2023 14:08 GMT

Fantastic help!! I'll also see about removing the keyboard and checking the traces. I haven't tried to remove the keyboard for fear of breaking something.

Beogram 8002 dead after adjustment

in BeoGram · Feb 13, 2023 18:26 GMT

Yes. Even changed the fuse for what that's worth.

Beogram 8002 dead after adjustment

in BeoGram · Feb 11, 2023 09:09 GMT

Brand new to the forum but not new to B&O. I had a Beogram 8002 for years but it didn't survive a lightning strike and was sold off for parts. Some years later, missing the aesthetics of the 8002, I purchased a partially…