Copyright © 1998
HiFi System Components Ltd
Welcome to the Graham Slee Audio Products Owners Club ![]() Open to all owners plus those contemplating the purchase of a Graham Slee audio product wishing to use our loaner program: join here |
DIY Novo problem |
Post Reply ![]() |
Page 12> |
Author | |
Kevb ![]() New Member ![]() Joined: 01 May 2020 Status: Offline Points: 4 |
![]() ![]() ![]() ![]() ![]() Posted: 22 Feb 2022 at 12:12pm |
Hi Gents
My lock-down project was to build myself the DIY version of the NOVO headphone amp. I have enjoyed listening to wide sound-stage and clarity this extraordinary amp brings. One issue though - I hear a what i can only describe as a "flutter" noise on one channel when not playing music. The volume doesn't increase with the volume control, but can decrease if I extend the headphone lead to full length!. I have tried other headphones and plugging / unplugging interconnects - but without success. Any ideas please?
|
|
![]() |
|
Fatmangolf ![]() Moderator Group ![]() ![]() Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 7410 |
![]() ![]() ![]() ![]() ![]() |
Thanks Kev. I would disconnect it from the PSU and use a soldering iron to reflow the various junctions on the circuit board i.e. just enough heat to melt them and left them cool. Graham or John may uhave more specific advice and a better solution.
|
|
Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
|
![]() |
|
Ash ![]() Senior Member ![]() ![]() Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 3886 |
![]() ![]() ![]() ![]() ![]() |
Sounds like the lead is acting as an aerial. EM inductance?
|
|
![]() |
|
Fatmangolf ![]() Moderator Group ![]() ![]() Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 7410 |
![]() ![]() ![]() ![]() ![]() |
Dry joint was my first thought hence the reflow.
|
|
Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
|
![]() |
|
Ash ![]() Senior Member ![]() ![]() Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 3886 |
![]() ![]() ![]() ![]() ![]() |
My previous suggestion can't be correct otherwise both channels would be affected.
|
|
![]() |
|
Kevb ![]() New Member ![]() Joined: 01 May 2020 Status: Offline Points: 4 |
![]() ![]() ![]() ![]() ![]() |
Thanks for the responses Gents. By re-soldering the junction John- do you mean have a go at all the components joints?
Thanks once again
|
|
![]() |
|
Graham Slee ![]() Admin Group ![]() ![]() Telling it as it is Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 12974 |
![]() ![]() ![]() ![]() ![]() |
If you have a jeweller's eye-glass inspect every soldered joint. Should any of the ceramic (and possibly the two small blue boxed) capacitors be "dry jointed" they won't do their job of providing stability - an unstable amp goes to RF interference - it oscillates like a radio receiver. If a stability capacitor were to be "left out" of a power amplifier that channel would be burnt to a crisp by now. |
|
Not simple enough for Google-Bot to understand...
|
|
![]() |
Post Reply ![]() |
Page 12> |
Tweet
|
Forum Jump | Forum Permissions ![]() You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |