Rustly valve.

[Alvolake]

Have just bought a Valvo Heerlen 1961 E88CC and now notice a slight rustling over and above the normal white noise on turning on my rebuilt P10 phono stage and turning up the pot. It doesn´t interfere with the music, no real nasties because at normal volumes it disappears. I have used Tweek and plugged it in a few times but it still persists. Whaddayareckon ?

 

[Alvolake]

It´s definitely the Valvo - with my previous valve (russky no-mark) - no rustling at all. Can it be saved ? Can I use a magic eraser on the pins ?

 

[Jazid]

Ideally get it on a tube tester to make sure there isn't some cathode/heater or inter-electrode insulation problems. Assuming not, and if it's supposedly NOS then it might well burn off over the course of a few hours/days. I have had this in some WE triodes and this is what has occurred for me. It took about 10 or 20 hours I'd guess, as the process went on they rustled only on start-up, now not at all, and now several hundred hours later they remain silent and sweet. If the sound is right, the tube looks about right ie no getter discoloration, burn marks on the anode, etc, and it isn't being used right at its design limits then I'd say keep with it for a while longer.

- - - Updated - - -

I should've added that if there is poor insulation or leakage then DON'T persevere with it, get a refund and/or bin it to eliminate the chance of it messing your amp up!

 

[rabski]

Chuck it in the bin.

Loads of NOS tubes are noisy and there is no cure.

 

[Alvolake]

The guy I bought it from in Germany is sending me another one tomorrow. Would seem not all eBay sellers are the same.

 

[Jazid]

Chuck it in the bin.Loads of NOS tubes are noisy and there is no cure.

Errr...don't think so. Maybe without the second half of the sentence I could agree...

:^ for the eBay seller though

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