Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: Bruce65 on December 30, 2013, 04:14:34 AM

Title: Re: Crack Grounding, Tracing The Signal and Power Supply Common/Ground
Post by: Bruce65 on December 30, 2013, 04:14:34 AM

Hello,,

Bruce65 Just finished a Crack for my Son but one Channel is dead.

I have checked all Wiring and solder Joints and I believe everything is correct.

Resistance All Check Good,,but Voltages are somewhat OFF.

I have one question: LED's on the Preamp Tube; Shouldn't they both be lit?  I have one lit and one out.

Both Tubes Glow in two spots,  Any way to Check signal path? need O'Scope?

Bruce

Title: Re: Crack Grounding, Tracing The Signal and Power Supply Common/Ground
Post by: galyons on December 30, 2013, 06:35:56 AM

Bruce,
Post any voltages that are off by more than 10 -15% off.  That is the best way to start diagnoses.

Cheers,
Geary

Title: Re: Re: Crack Grounding, Tracing The Signal and Power Supply Common/Ground
Post by: Grainger49 on December 30, 2013, 12:53:16 PM

If you have any concerns about signal common and grounding the instructions to trace it is in my posted sticky in the Crack folder.