Victor TT 801

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.

@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.

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.

bad news....TT 801 service manual to get paid copy I have not yet found in the world.  :(

The TT-81 sm shows a single PCB in the explosive view. In section 11, only one half-moon shaped board named TAS-19C is described fpr layout & components.

My TT-801 has two larger half-moon shaped boards plus another smaller one between those two and the platter. Which speaks for the theory that TT-801 is a higher-intergrated version of TT-101