I hate to be a bother, but my Beocenter 9300 cd will not spin at all and I have spent hours searching the forum.

13 replies

 

I have a Beocenter9300.  I acquired it a few years ago and it worked fine.  No longer needed, so I sold.  Packed extremely well, but when person got it, said cd did not work.  He returned and after 2 yrs, I pulled it out again to work on.

What happens is that when you activate the cd, the laser makes a single swing out , returns and stops.  No cd spin at all.  Having read this forum and worked on BO cd's before, I pulled the servo board.  I replaced all the caps (except one I did not have a 1 uf/ 63V), except nowhere can I find C2103.  All mine seem to be labeled in the 28nn range.  Am I missing something here?  Or is the cap labeled something different on this version?

I know Martin has in the past offered for sale, the necessary components.  Still available?  But again, what else do I need to look at?  I imagine it is possible that the unit suffered some sort of 'shock' damage, but all the packing material was fine, and everything else seems to power up fine.

Any help would be greatly appreciated.  Pictures follow...

This looks like the servo board from a Beocenter 9300 not 9500

Different animal altogether.

Oh, my bad.  Thanks Graham.  Looked at so many posts, I forgot what I had.  My post has been corrected.

This one does not have C2103 and there's no cap kit for this newer version.
If the problem came after shipping I wouldn't suspect a cap problem anyways.
Is the laser lens free to move up/down apprx 1-2 mm if pushed carefully with a cotton bud ?

Martin

Thanks for the clarification on the C2103.  I was going crazy looking for it.  Laser lens does move freely up and down.

 

Brian

I would like to test the functionality of the cd drive motor.  I have obviously found the leads to the motor, but anyone have an idea as to the maximum allowable voltage I should use so as not to damage the motor?

Thanks, Brian

Well, the saga continues.  I went over the unit with a flashlight and magnifying glass looking for any problems.  When I got around to the back of the unit, lo and behold, I found that there was a crack in PCB64 in the upper left corner.  I de-soldered all the connections and found that the copper foil was broken at the top terminal and others.  This must undoubtedly been the reason I was getting no activity from the CD player.  I am going to try to jumper across the broken areas to the proper points and see if it works.

Anyone have a 110V US power supply / transformer for a Beocenter 9300 for sale???

 

Thanks again.

 

As bad as that looks, its not too difficult to repair.

Here's what I would do:

1) Get a high quality super glue (eg Gel type by Locite). Fill the gaps and glue the cracked pieces of the PCB back together. It will hold. I've done this before.

2) Use a Dremel Moto-tool with a wire brush attachment and polish off the varnish over the cracked portion of the trace.

3) Then using a high wattage soldering (say 50 watts), melt gobs of solder to bridge the cracked trace.

The cracks are in good locations, so not too difficult to fix.

 

There is a Transformer Assembly on Ebay USA, but I think its for the 9500. Voltages likely different, but check the part numbers in the manuals to confirm. Maybe it might work. Best to salvage what you've got.

Derek

Thanks for the tips Derek.  Considering it is only a 2-sided board, it should not be too bad.  I will get it glued together and attempt the trace repair this weekend.  I appreciate the advice.

 

Brian

Hi Brian:

Just make sure you fully clean the varnish off the traces where you are attempting the repair so that they are nice and shiny. You may need to use a bit of flux to help the solder flow. This will give you a nice mechanical bond.

Derek

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