Thorens TD135 / TD124 Capacitor Query - diyAudio
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Old 6th October 2005, 02:11 PM   #1
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Default Thorens TD135 / TD124 Capacitor Query

Hi,

I'm currently rennovating and modifying an old thorens td135 (little brother of the TD124) and have come up against a small problem. The capacitor connected across the motor terminals is partially melted and measures a really low value. Remarkably, the motor is still running well, but I was going to replace it to be on the safe side. Does anyone know what value/type of cap I should use? I can't find any info on the web, and unfortunately it's melted where the value was written!

A picture of the old cap's attached.

I've noticed from the result of my web searches that the TD124 uses a resistor as well as a cap in the PSU circuit. Would this kind of circuit be worth implementing in the 135, or shall I stick to the original for the sake of simplicity. If it sounds any good once I've finished the plinth etc. I might consider some sort of external "armageddon" type PSU.

Any thoughts and help would be much appreciated!

Tom
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Old 6th October 2005, 08:59 PM   #2
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Quote:
I've noticed from the result of my web searches that the TD124 uses a resistor as well as a cap in the PSU circuit

The only cap in the 124 is across the power switch - no cap is used on the motor as it is not synchronous.
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Old 8th October 2005, 04:32 PM   #3
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Yes, I beg your pardon, that's the one, across the switch. Just had a look in another TD135 and it's got the following markings:

630V--d
665 - A
FZNT
61/7

I'm still none the wiser as to what this means in terms of modern/conventional values. The one in mine is a different cap, rated 1000v, but the microfarad rating is melted. Any help would be much appreciated!
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Old 8th October 2005, 05:16 PM   #4
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I think it's 10nF. The value is really not critical as the only purpose of the cap is to reduce the switch noise.
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