Hi dear Members I have a Beogram 4500 on my workbench and it has an really unusual issue. After changing the usual cap on the servo board the player needs very long to read a original CD. RW CD's are not playing. I could adjust the laser current and the focus as discribed in the SM when a CD is running. I swapped the CD drive and the servo board to another Beogram 4500 and everything is working flawlessly as expected, CD's even RW 's are read in within about 5 seconds. I tested both drives and servo boards again and again no change. So I my opinion the issue could only be on the mainboard. So I renewed every single cap on the mainboard even the two inside the uPc can, nothing changed. Dry solderjoints are not visible under a magnifier. Voltages are in specs as far I could read. Are there any suggestions where to serch for this issue? Any help is highly appreaciated?   Kind regards Christian