I’ve been some time off with Covid during the first weeks of January and slowly started again with sports. Well, had some problems with breathing but finally I am fully recovered. Unfortunately, Frank had to wait quite a while to get his CD555 (the one from the unboxing video) finished, but now he got it back – fully recovered and […]
Category: Modifications
On cooling: A control unit for a fan
When designing the rear plate I kept some cuttings to place a fan. Initially it was designed for my new CPU board to control the fan with a sensor to measure the temperature. However, due to some requests I decided to design a small pcb to add a wee fan controller that fits into the given cuttings for the – […]
Attempts to improve the cooling
One of the main issues of the CD555 is the produced heat. Philips added a thick rear plate and the handle for the battery pack represents a kind of a heatsink. Mounted onto this heatsink are the two amplifier ICs and a transistor to generate 15V out of 38V. The difference of 23V will be transformed into heat. In addition […]
New Micro-Processor Board running inside the CD555 for the first time
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 […]
New MicroController Board Rev.C running inside the CD555
After a while there has been some progress regarding the new Micro-Controller Board. Let’s skip Revision B since it still had some issues and move forward to revision C. This revision finally made it inside the SoundMachine. Everything fits and is working although I have to change the position of connectors for easier assembly. It is not possible to get […]
Progress of new cooling possibilities….
Well, after I lost this week the second time the decoder panel of the CD-Player due to heating issues, I’ve got a “little bit” angry. Although I use this sound machine everyday it should not fail every six months. I guess it is time to improve the cooling of the sound machine. Originally, the aluminium panel at the rear side […]
Bluetooth module added
I already added the Bluetooth module several weeks ago. Unfortunately the module was not working. Only the left channel played music and there were a lot of interferences. Since I had already used the same module it was clear that the device is broken. Delivery times are horrible at the moment – as for all who are waiting for ICs […]
Merry Christmas
Merry Christmas to all of you. Christmas brought new speakers. Another modification and a huge improvement of sound. But the speakers need a case that fits better to the design of the Sound Machine. More later, in the meantime enjoy your holidays with your beloved.
Trying to figure out the current position of the tape
Well, one idea to figure out the current tape position was to measure the current of the motors when playing the tape. There were several devices I had in history which I can remember that did it that way. I expect a difference in the current when the tape is at the very beginning and at the end of the […]
Tape Counter Button
It took me a while to design and print a button for the new tape counter. Whilst the first approach was working it was not so stable and too thin. From four prints I was able to use two. Need to figure out the best way to add supports for a better outcome. However, I had to redesign it. I […]