Whats the proper way to TS a SS guitar amp?

[Justa_me]

Help is appreciated

The Amp is a gibson G20 from '71

original symptoms were low output. (that was last year, now its motor
boating)

I have a tektronix audio sig gen but don't know what/how to input
signal at the amp's guitar jack input.

Tha amp is "motor boating" whenever I plug anything (sig gen or
guitar) If I disconnect the this stage from the amp the signal is
amplified and clean when I inject a signal from the sig gen.

Is there a place I can post a schematic of this amp for others to
review and help me understand whats what.

Thanks for your time and concideration
Steve

e_mail: Steve98331atYahooDOTcom

 

[John Fields]

On Tue, 18 Jan 2005 14:30:16 -0800, Justa_me <etsad@centurytel.net>
wrote:

Help is appreciated

The Amp is a gibson G20 from '71

original symptoms were low output. (that was last year, now its motor
boating)

I have a tektronix audio sig gen but don't know what/how to input
signal at the amp's guitar jack input.

Tha amp is "motor boating" whenever I plug anything (sig gen or
guitar) If I disconnect the this stage from the amp the signal is
amplified and clean when I inject a signal from the sig gen.

Is there a place I can post a schematic of this amp for others to
review and help me understand whats what.

---
You bet! alt.binaries.schematics.electronic


--
John Fields

 

[Rheilly Phoull]

"John Fields" <jfields@austininstruments.com> wrote in message
news:5c6ru0l5bkk87mrrs2pg231ll1uhmkndc3@4ax.com...

On Tue, 18 Jan 2005 14:30:16 -0800, Justa_me <etsad@centurytel.net
wrote:

Help is appreciated

The Amp is a gibson G20 from '71

original symptoms were low output. (that was last year, now its motor
boating)

I have a tektronix audio sig gen but don't know what/how to input
signal at the amp's guitar jack input.

Tha amp is "motor boating" whenever I plug anything (sig gen or
guitar) If I disconnect the this stage from the amp the signal is
amplified and clean when I inject a signal from the sig gen.

Is there a place I can post a schematic of this amp for others to
review and help me understand whats what.

---
You bet! alt.binaries.schematics.electronic


--
John Fields

Meanwhile why not replace all the electrolytic capacitors, (faulty ones can
cause the motorboating) I would think they are dryed out by now and it would
be a logical start to the project, maybe even a cure.

--
Regards ..... Rheilly Phoull