Searching for schematics for my old Philips CD304 - diyAudio
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Old 29th July 2003, 09:51 AM   #1
gaborka is offline gaborka  Hungary
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Default 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?
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Old 4th August 2003, 04:28 PM   #2
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Hi, sounds like you have a heat problem, check if your voltage regulaters are hot after 3-5mins, or when the player shuts down.
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Old 5th August 2003, 10:44 AM   #3
guido is offline guido  Netherlands
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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
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Old 6th August 2003, 08:32 PM   #4
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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
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Old 11th August 2003, 12:02 PM   #5
gaborka is offline gaborka  Hungary
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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
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Old 11th March 2004, 10:46 AM   #6
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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
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Old 15th April 2004, 02:02 PM   #7
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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
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Old 16th July 2004, 07:59 PM   #8
beamnet is offline beamnet  Netherlands
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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.
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Old 19th July 2004, 07:10 AM   #9
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Hi,
thanks for the hint! I'll look for such bad joints on my PCBs

Ciao,

Stefano
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Old 6th July 2005, 07:47 PM   #10
falcon4 is offline falcon4  China
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Default hi anybody

I'm searching it too!

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