Searching for schematics for my old Philips CD304

gaborka · 29th July 2003, 09:51 AM

I'd like to repair my CD player. The problem: playing stops after 3-5 mins and don't start again. After a power off and about an hour wait time it can work again for 3-5 min.

Can anyone help me?

Alvinttt · 4th August 2003, 04:28 PM

Hi, sounds like you have a heat problem, check if your voltage regulaters are hot after 3-5mins, or when the player shuts down.

guido · 5th August 2003, 10:44 AM

Probably a bad solderjoint at a component getting hot.
When the part gets hot, the metal gets a bit bigger and contact is lost with the pcb. Powersupply is indeed a good place to start, check the regulators.

GuidoB

George Kubitsch · 6th August 2003, 08:32 PM

Hi Gaborka!
In my opinion you have one or more old dried electrolitics in your CD player. An old dried electrolitic capacitor has some but very little capacity, when it is cold. The situation can change dramatically when its temperature is rising after some minutes operation
Change the electrolitics to new ones with the same values.
I hope this help

George

gaborka · 11th August 2003, 12:02 PM

Thanx everybody!

I've checked all the regulators. Seemed O.K.

The laser is working, but can't read the disk & some strange noise comes from the CDM-1.

gaborka

Cauldron15 · 11th March 2004, 10:46 AM

Hi

Please see my reply to thread "Philips CD304 - noise problem"
I also had a problem where no audio now fixed.
I've had the 304 since new when they first came out

Regards

seppstefano · 15th April 2004, 02:02 PM

Hallo,
me too got a 304MkII.

It's a tank, indeed. But while "sometimes" starts spinning and sounding, most of times it refuses to read the TOC.

Once started it sounds quite fine. One time it stopped by itself

Should I look for bad soldering joints and replace Caps?

Is it a good idea to replace PSU caps with bigger ones? Perhaps bypassed by quicker ones??

TIA,

Stefano

beamnet · 16th July 2004, 07:59 PM

I'm working on several of these players and i discover that a lot of soldering is bad. especially around hot components. The pertinax print shows clearly where it becomes hot by blackening. Allso the ic's on the cooling element (left front) need to be resoldered.

seppstefano · 19th July 2004, 07:10 AM

Hi,
thanks for the hint! I'll look for such bad joints on my PCBs

Ciao,

Stefano

falcon4 · 6th July 2005, 07:47 PM

I'm searching it too!

I have a CD304,but it doesn't work.so i want to fix it .help me !

29th July 2003, 09:51 AM	#1
gaborka diyAudio Member Join Date: Jul 2003 Location: town	Searching for schematics for my old Philips CD304 I'd like to repair my CD player. The problem: playing stops after 3-5 mins and don't start again. After a power off and about an hour wait time it can work again for 3-5 min. Can anyone help me?

5th August 2003, 10:44 AM	#3
guido diyAudio Member Join Date: Mar 2002 Location: diepe zuiden	Probably a bad solderjoint at a component getting hot. When the part gets hot, the metal gets a bit bigger and contact is lost with the pcb. Powersupply is indeed a good place to start, check the regulators. GuidoB __________________ GuidoB

6th July 2005, 07:47 PM	#10
falcon4 diyAudio Member Join Date: Jan 2005 Location: GD	hi anybody I'm searching it too! I have a CD304,but it doesn't work.so i want to fix it .help me !

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
Philips CD304 MK2 help please	tubee	Digital Source	48	21st September 2009 08:36 PM
Philips CD304 mkII schematics or service manual	drews	Digital Source	5	18th September 2007 04:40 AM
Philips CD304 schematics	Toropkin	Digital Source	0	13th October 2006 12:33 PM
Philips CD304 mods	gogo	Digital Source	3	20th March 2004 04:39 PM
Searching for Philips schematics	Cobra2	Digital Source	19	17th December 2003 12:16 PM


	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

4th August 2003, 04:28 PM	#2
Alvinttt diyAudio Member Join Date: Jun 2003 Location: Singapore	Hi, sounds like you have a heat problem, check if your voltage regulaters are hot after 3-5mins, or when the player shuts down.

6th August 2003, 08:32 PM	#4
George Kubitsch diyAudio Member Join Date: Nov 2002 Location: Hungary	Hi Gaborka! In my opinion you have one or more old dried electrolitics in your CD player. An old dried electrolitic capacitor has some but very little capacity, when it is cold. The situation can change dramatically when its temperature is rising after some minutes operation Change the electrolitics to new ones with the same values. I hope this help George

11th August 2003, 12:02 PM	#5
gaborka diyAudio Member Join Date: Jul 2003 Location: town	Thanx everybody! I've checked all the regulators. Seemed O.K. The laser is working, but can't read the disk & some strange noise comes from the CDM-1. gaborka

11th March 2004, 10:46 AM	#6
Cauldron15 diyAudio Member Join Date: Mar 2004 Location: australia	Hi Please see my reply to thread "Philips CD304 - noise problem" I also had a problem where no audio now fixed. I've had the 304 since new when they first came out Regards

15th April 2004, 02:02 PM	#7
seppstefano diyAudio Member Join Date: Jan 2004 Location: Italy, Genova	Hallo, me too got a 304MkII. It's a tank, indeed. But while "sometimes" starts spinning and sounding, most of times it refuses to read the TOC. Once started it sounds quite fine. One time it stopped by itself Should I look for bad soldering joints and replace Caps? Is it a good idea to replace PSU caps with bigger ones? Perhaps bypassed by quicker ones?? TIA, Stefano

16th July 2004, 07:59 PM	#8
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	I'm working on several of these players and i discover that a lot of soldering is bad. especially around hot components. The pertinax print shows clearly where it becomes hot by blackening. Allso the ic's on the cooling element (left front) need to be resoldered.

19th July 2004, 07:10 AM	#9
seppstefano diyAudio Member Join Date: Jan 2004 Location: Italy, Genova	Hi, thanks for the hint! I'll look for such bad joints on my PCBs Ciao, Stefano

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

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