Hi all - have had a persistant and intermittent sound issue with my 2nd hand Crack
Initally would hear buzzing , scratching noise on both channels on startup - which would then disappear after 20-30- minutes
Found 2 or 3 dodgy solder joints and reflowed as many others as I could get to
Now the amp was silent on startup but the buzzing, scratching would appear after some time -30-60 mins
Kept reading the answers to new forum posts and thought a new 12AU7 "bottle" may be my solution
Went for a Electro Harmonix ECC82 Gold - nice and quiet ........ then after an hour or so ... the dreaded scratching again
Decided to follow a replier's advice to a post about checking tightness of all screws - Glad I did - everything was loose - especially the tube socket screws
Plugged it in last night - 4 hours noise free....
Also made up a new 5 ft. cable for my 650's using Norne Audio silver plated copper wiring and a 6.3mm Eidolic plug -
seems a nice step up over the standard Senn 650 cable and now with my dead quiet Crack , I am one very happy Camper !
« Last Edit: April 22, 2017, 11:59:12 PM by mickp elijah audio »
Michael Parin
CEO Elijah Audio
