codyg326
New Head-Fier
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- Dec 5, 2016
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What power tubes are in the back?
What power tubes are in the back?
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What power tubes are in the back?
Changed all 4 tubes on my LD MKII at once. Mullard M8100/CV4010 and Russian 6N6P. Now the right channel pops and crackles. Left it for a long burn in, but have a feeling that it got worse. Which tubes are more probable to make audible trouble, driver or power tubes, or it could be any of them?
Just wanna say thanks to OP for the starter guide, really helped me narrow down my choices for me to play around and explore different tubes.
Wanted to say thanks again for the info. Just as I was about to get a new MKIV (settling for the non-SE version), a used SE for a nice price popped up on ebay and I jumped on it! I'm excited to get in to rolling some tubes again after months of solid state exclusivity. Also grabbed some Sylvania Golds because I remember the last time I was tube shopping they were like $75/pair or something absurd but I'd always wanted to try them.
By the way does anyone know where to edit the signature at the end of my posts? I remember typing that years ago but it's way out of date and I can't seem to find where to edit it (I checked my site settings and profile info)... thanks
Hi DjBobby,
You write that you changed all four tubes at once. Many times the crackling and noise could come from a bad contact from corroded pins. Take a small knife (doesn't have to be sharp) or something similar, and gently scrape each individual pin so that that it looks more shiny. Oftentimes you can see the oxidation and dirt on the pins.
If the tube shows a white coating inside it is finished - lost vacuum.
IMHO don't bother with expensive de-oxidation sprays - the mechanical scraping works best.
Good luck!