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TonyDuell · 9th Aug 2017, 10:12 am

Yes, that lever is a standard feature, metioned in both the user and service manuals. As the capstan motor is electronically controlled, the timer is the only part that depends on mains frequency.

The lever moves the timer motor (which will happily run off 50Hz or 60Hz power, just at different speeds) so that its worm engages with different gears on the next shaft, thus giving different reduction ratios for the 2 mains frequencies.

I've now got the timer back together, and it seems to work properly when I turn things by hand. The contacts close when they should, the 'carry linkage' from minute to hours now snaps over nicely.

Now cleaning the contacts on the record relay, then will put all the boards back in the amplifier. Then take enough of the deck apart to get rid of the Evil Goo (I do not want it dripping on the amplifier again.)

9th Aug 2017, 10:12 am	#41
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Philips N4450 Yes, that lever is a standard feature, metioned in both the user and service manuals. As the capstan motor is electronically controlled, the timer is the only part that depends on mains frequency. The lever moves the timer motor (which will happily run off 50Hz or 60Hz power, just at different speeds) so that its worm engages with different gears on the next shaft, thus giving different reduction ratios for the 2 mains frequencies. I've now got the timer back together, and it seems to work properly when I turn things by hand. The contacts close when they should, the 'carry linkage' from minute to hours now snaps over nicely. Now cleaning the contacts on the record relay, then will put all the boards back in the amplifier. Then take enough of the deck apart to get rid of the Evil Goo (I do not want it dripping on the amplifier again.)