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Victor TT 801

Hi all.
Anyone own it?
Has it ever been necessary to carry out a recap or suffered a failure and carry out the calibration or repair without a service manual available in the world?
128x128best-groove
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best-groove's avatar
best-groove OP
842 posts
 
    • Replacing the electrolytics in the PS should not necessitate a recalibration.

    it is not entirely correct, due to aging the condensers can increase their value by up to 50% and the variation can be significant, compared to a new condenser.
    By this I mean that an check must be made because the parameters are not the same before and after the recap.

    @dickson the two of us must continue searching for a service manual in the world and obtain it to be able to duplicate it and keep one for both of us.
    As reliable information, I knew that wanting to do maintenance on the pin by cleaning everything well from old grease, an excellent grease compatible with the original is the grease produced by the Italian company Saeco for coffee machines and is easily found on Amazon.
lewm
13,009 posts
 
What increases when lyrics age is ESR. The capacitance per se most often falls based on my experience with my Sencore L75 meter. Anyway I was speaking of PS capacitors only. If they have aged sufficiently to alter DCV delivered to the servo, etc, anything goes. If a prior user did a calibration with bad lyrics in place then of course you’d have to recalibrate. If the unit was never recalibrated from new then maybe you’d be ok after replacing caps that have gone bad. So maybe I should not have used the word “should”. “Might” not need recalibration would have been better.
best-groove's avatar
best-groove OP
842 posts
 
@lewm 

I have to deny you, small electrolytic capacitors for example from 1 - 2.2 - 10 uF at the measurements, they showed me not only an increase in the ESR or in some cases also identical to new capacitors, but rather values in uF increased by 40/50 % and this factor together with other negative aspects (inflated condenser, loss of electrolyte) determines the old age of these components.
lewm
13,009 posts
 
It’s silly to argue about this. Obviously a swollen or leaky cap has to be replaced. By “leaky” we mean both electrically (leaks DC voltage) or physically (leaks fluid). I can’t recall what happens to the capacitance of those tiny types with values under 5uF, so I don’t doubt you. And I agree you do find those in vintage DD turntables in-circuit. Typical PS lytics in the range 50 uF and higher exhibit a rise in ESR as they age, whether uF goes up or down.
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