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Krell CD Player.....Please Help

I have had my Krell CD-DSP for many years and it's been a great cd player but recently, the display shows "disc error" spins for a few seconds and stops. I called Krell and spoke with a technician named Ray and he swears it's the laser assembly. I thought he meant just the laser ( philipps cdm1 mk.2) so I went and bought one and swapped it out with the existing laser but same "disc error" message appears in display window. Now, after few days went by, it won't even spin the disc. I opened her up and swapped out the laser with the original one and same thing...it won't even spin the disc.
I am in desperate need of help here. Krell tells me they don't have any parts for this unit anymore so sending the unit in to them is not an option.
Can anyone with some knowledge of this unit or it's type of transport or cd assembly help please!!!
67chevellesslover
pbnaudio's avatar
pbnaudio
1,534 posts
 
On some CD laser pick-ups theres a solder blob that protects the laser
against static discharge, once its installed you need to carefully remove it
with a soldering iron and some desoldering braid - quite easy.

Just did a search and it appears that this feature is mostly on Sony Pickups
so it may not be relevant to your Phillips piece. I checked the service manual
for the drive and could not find any mention of it.

Best of Luck

Peter
jafant's avatar
jafant
10,525 posts
 
67chevelle-

I am hoping that Keith (audiolabyrinth) will chime in here. He knows many people at Krell and can assist you w/ your query. Keep us posted on any repairs & Happy Listening!
steakster
720 posts
 
Re: anti-static solder blob. Use a strong magnifying glass to compare the tiny circuit boards of the old and new laser assemblies. See if a solder blob sits on what appears to be two circuit traces on the new one. It is intentionally shorting it out for shipping purposes. If you find the blob, you need to remove it carefully with a soldering iron and a desoldering braid or desoldering pump. If the two assemblies are identical, then there's no anti-static blob.
davehrab's avatar
davehrab
375 posts
 
The Philips cdm1 mk.2 assembly that you installed is both the laser and the spindle motor ... now you know that isn’t the problem as they are new and should be working properly

Attached to that Laser assembly is a power board ... when the capacitor on that board goes bad the laser/motor assembly doesn't get power

Replace the axial capacitor 16v 33uf cap under the PCB board attached to the laser mechanism
.
audiolabyrinth's avatar
audiolabyrinth
4,483 posts
 
Hey, I did post a response above, it is my believe that it's a good bet, nothing wrong with looking into what I posted, thanks Jafant, cheers to you.
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