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Working on a BS3000 CD unit. CD sometimes spin most of the time dont. In Testmode focus works but all the other tests fail.
I was told they use a VAM1253 my unit has a VAU1255/21. Is this the correct unit for a BS3000 with a large clamper? I like to swap the cd unit for a working one.
Where can I order parts for this CD unit or a working VAU1255?
Can you post some close-up pics of the actual laser unit and its flexible PCB.
You may have to do some disassembly here.
I'll try and identify the replacement laser for you.
Menahem
Location: Jerusalem
My B&O Icons:
Can you post some close-up pics of the actual laser unit and its flexible PCB.
You may have to do some disassembly here.
I'll try and identify the replacement laser for you.
Menahem
Thanks Menahem. I make some pics and post them here. When in testmode the laser focus inside and outside but not upside and downside. Sometimes in cd spinsup but only after some time. Most of the time the cd doesnt spin up at all.
Paul
Hello Yachadm,
thanks for the advice about capacitors. I have to be more precise: I used Wima in the preamp section, Panasonic FC's for power section. Now I like the sound, I think I will not change this setup at the moment. If I get Nichicon caps maybe I find time to change to those.
Regards
satmonster321
No, that's excellent - don't change anything.
The Wima's are very high-grade film capacitors, the Nichicon KT's are electrolytics.
If you already put the film capacitors in, do not downgrade to an electrolytic.
BTW, the Panasonic FC's are not considered Low-ESR caps, and they are fine for this work (but I just prefer Nichicon HE, as they have higher current capability). Anyway, there is no justification to change anything!!!!
Location: Jerusalem
My B&O Icons:
Can you post some close-up pics of the actual laser unit and its flexible PCB.
You may have to do some disassembly here.
I'll try and identify the replacement laser for you.
Menahem
Hi Menahem, here are some pics from the unit (I disasembled the PCB)
Tomorrow, I'll go through my laser database, but in the meantime, you should check the ESR of all those SMD electrolytic capacitors. Perhaps the laser is fine, but it is not getting good power because of bad capacitor(s).
Do NOT touch that variable potentiometer between the capacitors - it has nothing to do with laser power!!!!!
Location: Jerusalem
My B&O Icons:
Tomorrow, I'll go through my laser database, but in the meantime, you should check the ESR of all those SMD electrolytic capacitors. Perhaps the laser is fine, but it is not getting good power because of bad capacitor(s).
Do NOT touch that variable potentiometer between the capacitors - it has nothing to do with laser power!!!!!
Hi Yachadm. Did you find someting? I saw on ebay a VAM1255 laser for sale. I searched on the internet for the difrence between a VAU en a VAM. I didnt find the answer. Do you know where i can buy the sprockets, i want to replace these as well becuase they look a bit worn
Hi Paul
I didn't forget you. I contacted my supplier in Taiwan for clarifiaction, but as yet, I have not received an answer.
I'll send you a PM if I get something.
Menahem
Location: Jerusalem
My B&O Icons:
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