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Volume fades off and back on (Read 2244 times)

Geno

Seasoned Member

Without music, life
would be a mistake.

Posts: 2000

Volume fades off and back on
04/01/19 at 22:25:20

I'm having an issue with the volume fading off and back on on my SE84UFO. I can see the rectifier light fade out as this happens. After about 15 seconds or so, the volume slowly goes back to normal. I thought it was a bad Rectifier, swapped it out, but same thing. I swapped out the internal fuses too.

The only thing I haven't done is swap out the input and power tubes.

(2)SE84UFO(Balanced Monoblocs) OR Sansui AU-222
Crown sub amp
Cambridge Audio CXN(ModWright) • ZBIT
SL-1210MK5(KAB Mods) Soundsmith Aida MKll cart • Darlington Labs MP-7
Otari MX5050-Bll2 R2R
ZLC Power Cond.
Lii Audio PT-10/W-15 in open baffles

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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 23522	Re: Volume fades off and back on Reply #1 - 04/02/19 at 00:12:23 Check the fitting of your power cord, that's one option to consider if you haven't. . . ..
Back to top	HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1 IP Logged

Geno Seasoned Member Without music, life would be a mistake. Posts: 2000	Re: Volume fades off and back on Reply #2 - 04/02/19 at 01:37:07 Thanks Lon. I cleaned the socket real good and plugged and unplugged the rectifier a few times to make sure I’d get a good connection. Cut it on, and the rectifier did not come on, but I moved it around a little, and it came on and has played for an hour just fine. Fingers crossed that I don’t have a faulty socket.
Back to top	(2)SE84UFO(Balanced Monoblocs) OR Sansui AU-222 Crown sub amp Cambridge Audio CXN(ModWright) • ZBIT SL-1210MK5(KAB Mods) Soundsmith Aida MKll cart • Darlington Labs MP-7 Otari MX5050-Bll2 R2R ZLC Power Cond. Lii Audio PT-10/W-15 in open baffles IP Logged

Lon

Seasoned Member

"Love without
guts is
worthless!"
Philip K. Dick

Posts: 23522

Re: Volume fades off and back on
Reply #3 - 04/02/19 at 01:41:32

That's good news. I had a rectifier socket like that in one of my Torii Mk IIIs that the rectifier would not come on until I wiggled it about. I sent that Mk III in for a beeswax upgrade and mentioned that to Steve and when it came that it only did that once or twice. . . .

I also had a Zen amp that the power cord I was using would sort of wiggle loose and make intermittent connections which was why I recommended looking into that.

Hopefully the problem won't persist!

HR-1,ZBIT,ZROCK2,SEWE300B,CSP3-25mod; Rega RP3 all GrooveTracer mods;PSAudio:PST+DSD, DAC Mk II, P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkrcbls; Mapleshade SamsonV3; VooDoo:Cremona+Amati interconnects, IsoPods; headphones: Sennheiser HD800S,ZMF Ori,Oppo PM1

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