Finally, after endless months of development Revision C of the new Microprocessor Board is running inside the machine to control the tape and the CD-Player. Let’s not talk about Revision B since it still had some faults. However, it has been a long way and took many fails and expenses to come this far. Some days ago, for instance, I […]
Category: Decoder Panel
First long time run of Unit #3 failed
A better product name than Philips-CD555 would be Philips-SMFH. SMFH as abbreviation of SoundMachine From Hell. The think drove me crazy the whole day. Whilst I was playing for hours yesterday, today morning it failed. I have to admit that after some hours there machine made a silent but hearable buzz which was not in the audio line and the […]
CD Player working
Since there were a lot of issues with the CD Player it took some time to solve them. First the Decoder Panel was not working. After putting all the ICs on a socket and after I exchanged all capacitors the replacement of SAA7000 and SAA7020 did the job. In the same time I have done some optimisations to the circuit. […]
CD spare parts and where to find them
To be able to locate the defect on the CD-Player I do need some spare parts. Right now the error could be somewhere at the CDM2 mechanics/controller board or at the decoder panel. I do not want to disassemble one of my other two devices for testing purposes, thus I have done some research in which CD-Player from Philips or […]
More CD-Player issues
After the amplifier is working it is time to check the CD-Player. Unfortunately it was not all the time working. Sometimes the CD was spinning faster and faster, the controller was unable to read the TOC returned an error. It was working better when the Decoder Panel was in a vertical position. So I thought it might be a loose contact. I […]