Hej Jakob, Velkommen til Beoworld ! Hvordan er forstærkeren "gået" ? Hvilke symptomer oplever du ? Martin

If it runs fine, I wouldn't worry too much about the slightly high voltage unless caused by ripple as Menahem suggests. Try putting your multimeter in AC-volts mode and measure across the large filter capacitor and let us know the result. Not the best way to measure ripple but it will give us an idea of the ripple level. There's an adjustment

Yes, that will be the reason. The sensor in the arm next to the tonearm detects a record but the carriage is not allowed to stop and the tonearm to be lowered before a certain amount of pulses has been counted. No pulses = no stop and no lowering. You can replace it with a good IR LED of almost any type though you may have to drill or cut a bit out

Yes, there are several minor production changes to add to the fun. Both in the coding and hardware. BTW: The threaded shaft is not the same on all 50Hz and 60Hz machines either. It was something with tiny vibrations from the mains transformer causing the threaded shaft to resonate audible in standby on 60Hz, so it was made slightly thicker (or thinner

Did you also check for cracked solder joints inside the CPU casing ? I see this more and more, especially at the CPU socket itself. Use a microscope, look carefully or simply redo the lot. Else, put a scope to the sensor signal path and see if you can reproduce the platter rib pattern. Martin

If you like to make sure, you can put a voltmeter across the servo motor leads and compare the two decks. That will tell you if one deck has a too tight running mech. Martin

If that's a millimeter at the extreme cartridge end of the tonearm, I wouldn't worry too much about it. Martin

Seeing a Beogram of this series with a constantly moving arm is rare. They usually move in tiny steps, a quarter to a third shaft rotation at a time. Hardly enough to actually see the carriage move unless you have very sharp eyes and really look for it. If it runs in larger "chunks", like several rotations at a time, it's probably because

What Menahem suggests will be fine as a safety precaution for yourself and your house supply installation, mains fuses and some circuits inside the radio. However, a 230V 100W bulb will easily draw a current higher than 250mA so would most likely not have saved any fuses in this case of a shorted transformer secondary (depending on the transformer load

You have a PM, check your inbox at the extreme top right corner of this page. Martin