marantz cd54 won't play unless it warms up

isitrisky · 21st May 2011, 03:48 PM

I have tried finding an answer to this on this board as I know I have seen it discussed in the past. My Marantz cd54 won't read a disc unless it has been powered up for 45 minutes to an hour...I know the 3 large 2200uf caps look bad other than that not sure what could be causing it...

wwenze · 22nd May 2011, 12:47 AM

To me, this "warming up" is the capacitors taking their time to charge up to the required voltage, which is a sure sign of bad capacitor and imminent complete system failure when the capacitor decides to give up totally.

isitrisky · 22nd May 2011, 07:22 AM

I figured as much...just not sure which caps? I had plans on changing all the caps that had anything to do with heat. Like I stated earlier the only ones that look bad are the very large ones..2200uf 25v...the rest look solid.

danico · 23rd May 2011, 08:54 PM

its should be one of the small size cap. Look for 0.22 , 2.2uF around the laser circuit.
On the CDM1 - CDM2 there is a certain cap that goes wrong
search on the forum.
did you get the schematic?
Is it look like the Philips 303??
Service manual, eprom result list | ElektroTanya | Service manuals and repair tips for electronics experts

isitrisky · 24th May 2011, 12:35 AM

danico..
I don't have a schematic...and this one has a CDM-0....I looked under the transport and all caps look solid...bt i will get a hold of some and swap them out...Albeit, when it does warm up it plays like a charm..

singa · 24th May 2011, 06:29 AM

Quote:

Originally Posted by isitrisky

danico..
I don't have a schematic...and this one has a CDM-0....I looked under the transport and all caps look solid...bt i will get a hold of some and swap them out...Albeit, when it does warm up it plays like a charm..

You will be very dissappointed....If you need 45 minutes warmup for it to play
it means there is a break somewhere.Download the CD63 service manual it
should be similar.Try swapping the flexi cable of the laser or check the pcb board for hairline breaks and various cable assemblies.We give too much credit to electrolytic capacitors.

danico · 24th May 2011, 08:49 AM

Maybe this tread can help you. I know I just read about the same problem.
Extending Philips CDM4 Life??

" I repaired a B&O CD5500 version 2 (CDM4) once with the identical lowering of sampling test voltage after a few minutes. Turned out the 33ufd axial cap in the laser supply servo board was on the way out. After replacement the machine has worked flawlessly for the client with an excellent 50mv center of disc laser sample. This has been 5 years now. I've seen many CDM2 with this identical problem."

21st May 2011, 03:48 PM	#1
isitrisky diyAudio Member Join Date: Mar 2011 Location: Los Angeles	marantz cd54 won't play unless it warms up I have tried finding an answer to this on this board as I know I have seen it discussed in the past. My Marantz cd54 won't read a disc unless it has been powered up for 45 minutes to an hour...I know the 3 large 2200uf caps look bad other than that not sure what could be causing it...

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Marantz CD54 help !	Zaireeka	Digital Source	2	3rd March 2008 10:21 AM
Looking for Marantz CD94 PLAY button	oshifis	Digital Source	1	31st October 2007 04:27 PM
Marantz CD94 doesnt play	Daveylodge	Digital Source	1	24th December 2006 03:28 AM
Coxial Output for Marantz CD54	lscangus	Digital Source	3	29th July 2006 08:09 AM
aleph5: only 3 irfp240 warms up	fheanor	Pass Labs	2	6th December 2004 06:44 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

22nd May 2011, 12:47 AM	#2
wwenze diyAudio Member Join Date: Mar 2008	To me, this "warming up" is the capacitors taking their time to charge up to the required voltage, which is a sure sign of bad capacitor and imminent complete system failure when the capacitor decides to give up totally.

22nd May 2011, 07:22 AM	#3
isitrisky diyAudio Member Join Date: Mar 2011 Location: Los Angeles	I figured as much...just not sure which caps? I had plans on changing all the caps that had anything to do with heat. Like I stated earlier the only ones that look bad are the very large ones..2200uf 25v...the rest look solid.

23rd May 2011, 08:54 PM	#4
danico diyAudio Member Join Date: Feb 2010 Location: Hungary	its should be one of the small size cap. Look for 0.22 , 2.2uF around the laser circuit. On the CDM1 - CDM2 there is a certain cap that goes wrong search on the forum. did you get the schematic? Is it look like the Philips 303?? Service manual, eprom result list \| ElektroTanya \| Service manuals and repair tips for electronics experts

24th May 2011, 12:35 AM	#5
isitrisky diyAudio Member Join Date: Mar 2011 Location: Los Angeles	danico.. I don't have a schematic...and this one has a CDM-0....I looked under the transport and all caps look solid...bt i will get a hold of some and swap them out...Albeit, when it does warm up it plays like a charm..

24th May 2011, 08:49 AM	#7
danico diyAudio Member Join Date: Feb 2010 Location: Hungary	Maybe this tread can help you. I know I just read about the same problem. Extending Philips CDM4 Life?? " I repaired a B&O CD5500 version 2 (CDM4) once with the identical lowering of sampling test voltage after a few minutes. Turned out the 33ufd axial cap in the laser supply servo board was on the way out. After replacement the machine has worked flawlessly for the client with an excellent 50mv center of disc laser sample. This has been 5 years now. I've seen many CDM2 with this identical problem."

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)