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https://www.decware.com/cgi-bin/yabb22/YaBB.pl AUDIO FORUMS >> General Discussion and Support >> arcing throughout a rectifier https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1604253889 Message started by piezoman on 11/01/20 at 18:04:49 |
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Title: arcing throughout a rectifier Post by piezoman on 11/01/20 at 18:04:49 someone sent me a .mov file showing a rectifier that i had sold, arcing throughout the tube. it looks like electrical pulses everywhere. i've never seen this. unfortunately i cant post the file on this forum because a .mov file isn't allowed. it's a tube that was barely ever used. a 5Y3GT. is this an impending failure of the tube? perhaps the long journey overseas has caused some sort of physical issue with the tube. any ideas? thanks, brad |
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Title: Re: arcing throughout a rectifier Post by CAJames on 11/01/20 at 20:07:55 This is why I stopped selling stuff on ebay (assuming that is where you sold it). An arcing rectifier certainly could be a bad tube. Or it could be used in an amp that isn't spec'd for it. Or it could be a bad amp. Or it could have been dropped. Hard to say for certain, esp. across an ocean. Sorry I don't have any better ideas, but as far as ebay is concerned t seems like the customer is always right and the seller always has to make it right. |
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Title: Re: arcing throughout a rectifier Post by MrDerrick on 11/01/20 at 21:38:17 Hard to say with certainty what the cause may be. I have a Cary SLA 70 Sig that had a pair of 5U4G Sovtek rectifiers. Looked like a blue lightning storm in each tube every time I fired the amp up. Finally called Cary and they informed me that the Sovtek 5U4G was not a good match for the SLA 70, they recommended GZ37s. Found a pair of GZ37s and all was right with the amp. BTW, the Sovtek 5U4Gs never tested bad. |
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Title: Re: arcing throughout a rectifier Post by piezoman on 11/02/20 at 15:50:28 good ideas gentlemen, thanks. yes, i sold it on ebay. i've sold a good part of my inventory there. i went ahead and fully refunded the customer [in thailand]. |
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