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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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PostPosted: 20 Feb 2015, 18:05 

Joined: 20 Feb 2015, 17:55
Posts: 2
Hi Ive never repaired an amp before Sound from one side is very fuzzy Could it be a bad solder I would like some help before i start ripping things apart thanks

PostPosted: 21 Feb 2015, 23:41 

Joined: 26 Oct 2012, 21:00
Posts: 203
Location: ontario canada
if you've never repaired an amp before you probably don't have test equipment so how do expect to trace out a distortion problem? and that's not dismissing the possibility that it's a bad solder joint.
assumptions about the cause and nature of a fault without the right methodology can lead you down the proverbial "garden path" or that other saying 'bout "a creek and a paddle"
a quick check for a bad solder would be "the circuit disturbance test"

PostPosted: 22 Feb 2015, 02:19 
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Joined: 08 Aug 2009, 03:11
Posts: 2229
Location: Chilliwack, BC
Does the sound clear up a bit when you shock it with some volume? If so, a bum speaker protection relay is likely to blame.

A good cleanup of the switches with contact cleaner and pots with Nu-Trol or equivalent also solves a lot of problems.

-= Gregg =-
* Ratings are for transistors - tubes have guidelines*
Home: GeeK ZonE
Work: Classic Valve Design

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