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

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Brian Posted: Sun, Mar 30 2014 9:05 PM

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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...

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joeyboygolf replied on Sun, Mar 30 2014 9:11 PM

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

Different animal altogether.

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Brian replied on Sun, Mar 30 2014 9:17 PM

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

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Dillen replied on Sun, Mar 30 2014 10:43 PM

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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

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Brian replied on Sun, Mar 30 2014 10:50 PM

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

Brian

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Brian replied on Mon, Mar 31 2014 2:29 PM

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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

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Brian replied on Tue, Apr 1 2014 3:30 AM

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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.

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auric replied on Wed, Apr 2 2014 7:02 PM

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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

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Brian replied on Thu, Apr 3 2014 4:03 AM

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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

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auric replied on Thu, Apr 3 2014 5:58 PM

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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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auric replied on Thu, Apr 3 2014 5:58 PM

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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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Brian replied on Fri, Apr 4 2014 3:38 PM

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Hi Derek,

I got a tip from somewhere else and used a brass brush on my Dremel to remove the varnish and leave a nicely polished surface.  Of course have to be careful not to go through the trace.  All that said, repair is underway.  I have mechanically secured the crack area with epoxy and a small bent piece of coat hanger on the front side and epoxied over that.  Started the trace repair and am using small pieces of capacitor leads to bridge the gaps and then flux and solder over that.  So far. so good.  Once complete, I will brush some epoxy over the repaired area.  May be overkill, but that's alright.  Not the prettiest repair in the world, but I think it will work fine.  Hope to get all repair work done and button it up this weekend for a test.

Thanks again to all for the advice.

Brian

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dan1969 replied on Sun, Feb 21 2016 4:02 PM

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i know its two years ago but did it work? :) i have a non spinning CD in  9300  so intrigued !