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jascha · 16th Sep 2018, 7:27 am

Hi everyone,

I have been carrying out a few routine repairs on a Japanese tape recorder (Lucor 561B) changing leaky caps etc however I still have an issue with the motor. Firstly, the AC motor is drawing around 0.6A at 117v operation and the rest of the circuit around (0.4A). I suspect it’s on the high side, that for a 70W rated appliance the current measured is around 1A?

Secondly, the machine is running under speed. I have taken the motor apart, cleaned it, relubricated it and all back in operation, however it’s runnijg slower than it should. Sounds like the capstan is missing the 60-50hz sleeve but the sleeve is in position. The motor has a label on it that says 100v 50-60hz.
I can machine a new capstan sleeve to make up the difference however it defeats the issue here as to why it’s running at a slightly lower speed on both 3 3/4 & 7 1/2 ips and why it consumes 0.6A of current on its own. Sounds like it’s still running set at 60Hz but on a 50Hz UK supply. I’m confused!
Any help is much appreciated please.

Thanks

16th Sep 2018, 7:27 am	#1
jascha Hexode Join Date: Nov 2005 Location: Kent, UK. Posts: 332	Valve tape recorder AC motor question Hi everyone, I have been carrying out a few routine repairs on a Japanese tape recorder (Lucor 561B) changing leaky caps etc however I still have an issue with the motor. Firstly, the AC motor is drawing around 0.6A at 117v operation and the rest of the circuit around (0.4A). I suspect it’s on the high side, that for a 70W rated appliance the current measured is around 1A? Secondly, the machine is running under speed. I have taken the motor apart, cleaned it, relubricated it and all back in operation, however it’s runnijg slower than it should. Sounds like the capstan is missing the 60-50hz sleeve but the sleeve is in position. The motor has a label on it that says 100v 50-60hz. I can machine a new capstan sleeve to make up the difference however it defeats the issue here as to why it’s running at a slightly lower speed on both 3 3/4 & 7 1/2 ips and why it consumes 0.6A of current on its own. Sounds like it’s still running set at 60Hz but on a 50Hz UK supply. I’m confused! Any help is much appreciated please. Thanks Attached Thumbnails