1985 Philips CD-104 player... does not work anymore - Need HELP please!!! - diyAudio
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Old 11th July 2008, 03:13 PM   #1
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Question 1985 Philips CD-104 player... does not work anymore - Need HELP please!!!

Hello everyone,
this is my first post within this forum... unfortunately I have to start with a help request...
I am actually dealing with a 1985 Philips CD-104 unit. It used to work fine, until I opened it in order to replace the cables ending with the two RCA connectors... To get more room during the work, I removed the two screws which held in place the power supply "block", situated in the back of the unit... i didn't remove anything else. When I had done the job, I reassembled everything and replugged in the unit.
But... it did not turned on like it used to do... after pressing the "power" switch, nothing happened.
What should I do? Could you give me any advice to fix this issue, annd to get this wonderful player - which hadn't had any issue for 22 years - working?
Also I would appreciate if someone could send me a pdf copy of the service manual for this unit, in English or Italian... I read in an old thread that some users of this forum possess it...
P.S. I hope to have expressed myself in a good way (I still have to improve my English...). Anyway I've attached some images, to get it clear....
Thanks in advance for your support!
Attached Images
File Type: jpg cd104-f2.jpg (87.7 KB, 322 views)
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Old 11th July 2008, 03:29 PM   #2
poynton is offline poynton  United Kingdom
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The obvious answer :....

Are you sure that you have reconnected everything correctly?
Some connectors look very similar.

Have you checked the fuses?

If it ain't broke, break it !! Then fix it again. It's called DIY !
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Old 11th July 2008, 06:20 PM   #3
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First of all, many thanks to Andy for his fast reply...
Actually, I didn't have to discard any connector (only changed the audio output cable and unscrewed the two screws in the back, showed in the picture...). So wrong connections should be to esclude...
I had already thought about checking/replacing fuses... but the matter is that I don't know where they're located (that is the reason why I've been looking for the service manual...).
Hoping that it is not a stupid question (it might be, as I'm not a pro in fixing these devices ), could someone tell me where these fuses are ? I don't want to risk to furtherly damage the unit while searching them...

Furthermore, I pray anyone who possess the manual and/or the schematics for this unit to send it to me (as I read on the "Philips CD104 tweaks", some user of this 4um should have it...)

Thanks to Andy and to everyone who will contribute in helping me...
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Old 11th July 2008, 06:38 PM   #4
dougigs is offline dougigs  United Kingdom
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Wow, that must be one of the earliest CD players! The big PSU heat sink in the back is a trip.

I'm asuming that you've followed the AC cable's path into the power transformer... that probably involves removing the aluminium shield that appears on the right in the back view. If you trace that wire through the trace and into the transformer, it should hit a fuse somewhere along the way. Assuming a fuse is the problem, that should be it.
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Old 11th July 2008, 08:39 PM   #5
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Trash it!
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Old 12th July 2008, 06:30 AM   #6
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Check the legs of the voltage regulators that are screwed to the heatsink (power supply "block" as you call it). Have any of them broken?
pure, perfect sound - forever
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Old 12th July 2008, 06:56 AM   #7
es44 is offline es44  Denmark
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CD104 SM
Hope this link works, it took a while to upload as it's >12Mb. ( edit....It works, just scroll down the page )

I understand that it's one of the best lasers sitting in there, so should be worth keeping alive.
I have a CD100, the first, and it still plays wonderful.

Look carefully for wires that might have loosened, that sometimes happens with those old players when they get opened up.

Best regards
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Old 12th July 2008, 06:59 AM   #8
avr300 is offline avr300  Denmark
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Link ain't working here Ebbe.
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Old 12th July 2008, 08:18 AM   #9
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@ QSerraTico_Tico:
I ain't gonna trash it, for sure!
If I won't be able to get it working, I'll get it serviced by a repair station...
This unit is one of the first CD players designed by Philips (in particular, as far as I know it should be the first one where the disc is loaded by means of a tray). Apart from this, it has a wonderful sound, not comparable with the modern players I had the occasion to hear... moreover, it succeeds in playing scratched discs where many other players fail...

Many thanks for the manual: the link worked perfectly and downloading has been very fast on my PC

@Dougigs, Musicomputer, Ebbe:
Thanks for your advice. Now I'm going out for a trip with some friends, and I'll be back home on Tuesday... so I'm going to take a momentary break with this work. When I'll be back, I will deal again with this issue, and follow your hints. Then I'll update this thread...
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Old 12th July 2008, 03:18 PM   #10
avr300 is offline avr300  Denmark
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Don't trash it. I have one here in working condition. It's a fun player.

Do check the pcb-connectors and their soldering. I have had a lot of bad connections (it's a well known problem)

Ebbe - the link works just fine now.
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