Forums - SE84CSP Loose Rectifier Tube

Welcome, Guest. Please Login or Register

01/08/26 at 22:50:13

Most recent 50 posts

Forums › Audio Forums › Frequently Asked Questions

‹ Previous topic | Next topic ›

Pages: 1

SE84CSP Loose Rectifier Tube (Read 1828 times)

Cons Verified Member Posts: 7	SE84CSP Loose Rectifier Tube 06/17/25 at 12:27:19 Cheers Hoping someone can help. The rectifier tube (5Y3GT) becomes loose and I need to jiggle it to work. It also vibrates and causes a hum. Would a socket extender or damper help? Thanks
Back to top	IP Logged

Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 27180	Re: SE84CSP Loose Rectifier Tube Reply #1 - 06/17/25 at 12:56:53 Seems like a socket issue. You can try to tighten the "tines" (I myself have never been successful with this) and that may solve the issue. Or as has been the case in one of my amps the socket may need to be replaced. . . .
Back to top	HR-1,ZBIT,ZROCK3,SEWE300B; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Ori,Oppo PM1 IP Logged

CAJames Seasoned Member "I've run every red light on memory lane." Posts: 2989	Re: SE84CSP Loose Rectifier Tube Reply #2 - 06/17/25 at 14:20:44 In general a socket saver prevents this issue rather than fixes it, but I doesn't hurt to try. Otherwise I agree with Lon: you can try surgery yourself or get the socket replaced.
Back to top	[Volumio \| Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos Omega SAM , Hifiman Arya, Audeze LCD-XC IP Logged

Kahuna Jack Seasoned Member Posts: 219	Re: SE84CSP Loose Rectifier Tube Reply #3 - 06/17/25 at 16:41:38 Is the glass itself loose from its own base? if so time for a new rectifier.
Back to top	IP Logged

Cons Verified Member Posts: 7	Re: SE84CSP Loose Rectifier Tube Reply #4 - 06/17/25 at 19:03:01 Thank you for the replies! I just had the preamp rebuilt, so it's odd that it's happening again with a new tube. Any particular place I should purchase a socket extender?
Back to top	IP Logged

CAJames

Seasoned Member

"I've run every
red light on memory
lane."

Posts: 2989

Re: SE84CSP Loose Rectifier Tube
Reply #5 - 06/17/25 at 19:34:13

Quote:

Posted by: Cons Posted on: Today at 11:03:01

...I just had the preamp rebuilt, so it's odd that it's happening again with a new tube....

Do you know that the tube sockets were replaced? Do you have another rectifier to try? Quality control on most current production tubes is pretty sketchy so it is possible the problem is the tube not the socket. FWIW it is always a good idea to have a compete set of replacement tubes on hand because you never know when one will go bad. Also the best way to test for tube related problems is to replace the tube.

Quote:

...Any particular place I should purchase a socket extender?

They are pretty generic so ebay or amazon are good bets.

Good luck regardless.

[Volumio | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E
STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Audeze LCD-XC

IP Logged

Cons Verified Member Posts: 7	Re: SE84CSP Loose Rectifier Tube Reply #6 - 06/17/25 at 20:16:07 Well... I explained the problem to Steve prior to the rebuild. He said he would change it if needed it. Thank you for your help on this. I'll try the socket extender.
Back to top	IP Logged

Cons

Verified Member

Posts: 7

Re: SE84CSP Loose Rectifier Tube
Reply #7 - 06/20/25 at 12:16:36

I did find the socket savers as suggested on Amazon. I think the odd thing on the unit is that the bolts holding the socket in place isn't flush with the chassis. I trimmed of some of the Bakelite off where the head of the bolt protrudes so the socket saver sits flush with the chassis. So far so good. Thanks for the suggestions!

IP Logged

CAJames Seasoned Member "I've run every red light on memory lane." Posts: 2989	Re: SE84CSP Loose Rectifier Tube Reply #8 - 06/20/25 at 16:01:59 I've had a lot of socket savers over the years and they have all fit between the socket mounting bolts. But I'm glad you solved your problem.
Back to top	[Volumio \| Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Mapletree Phono 3E STR-1002 -> Woo WA22 -> 2x UFO25s, balanced monos Omega SAM , Hifiman Arya, Audeze LCD-XC IP Logged

Kahuna Jack Seasoned Member Posts: 219	Re: SE84CSP Loose Rectifier Tube Reply #9 - 06/20/25 at 20:53:32 Ive used adapters often but never owned a socket saver. How does this fix OP problem?? are the pins fatter on a socket saver??
Back to top	IP Logged

Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 27180	Re: SE84CSP Loose Rectifier Tube Reply #10 - 06/20/25 at 21:13:46 In the case of 9 pin tubes in some cases the bottom of the socket saver are slightly flatter and the flatter surface of the bottom of the socket saver can help improve a connection.
Back to top	HR-1,ZBIT,ZROCK3,SEWE300B; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3;VeraFi Audio cpts VooDoo:Cremona+Amati interconnects;Stack EQ; headphones:Sennheiser HD800S,ZMF Ori,Oppo PM1 IP Logged

Pages: 1

Forums › Audio Forums › Frequently Asked Questions

‹ Previous topic | Next topic ›