"Boutique TS" Breadboard issue

Started by DJPsychic, May 09, 2020, 07:09:57 PM

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DJPsychic

Hola,


Working on bread boarding this "Boutique TS" courtesy of Beavis Audio. I think I've got it all wired up correctly but I'm only getting a faint guitar signal.

If I  remove the  1k2 on the Right side (G7-G11) of the IC, I get a full signal, but gain seems to be at max and I have no control over it.

Otherwise I'm getting very little signal. Only volume pot seems to have any effect.

I'm using a RC4558P






Govmnt_Lacky

#1
The wire going from the Drive pot to A15 should not be there.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic

Quote from: Govmnt_Lacky on May 09, 2020, 07:33:26 PM
Pretty sure the jumper between B10-B15 is an error. Should not be installed. Otherwise, you are shorting out the Drive pot.

So layout is incorrect?

Govmnt_Lacky

#3
Quote from: DJPsychic on May 09, 2020, 07:36:15 PM
Quote from: Govmnt_Lacky on May 09, 2020, 07:33:26 PM
Pretty sure the jumper between B10-B15 is an error. Should not be installed. Otherwise, you are shorting out the Drive pot.

So layout is incorrect?

Corrected my statement. Look above.

EDIT: Also... a schematic would help a lot.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic

Quote from: Govmnt_Lacky on May 09, 2020, 07:33:26 PM
The wire going from the Drive pot to A15 should not be there.

Removed no change

DJPsychic

Quote
EDIT: Also... a schematic would help a lot.

Sorry here you go



Govmnt_Lacky

Try a 10K resistor from J13 to J1
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic


Govmnt_Lacky

Quote from: DJPsychic on May 09, 2020, 08:03:03 PM
I'm getting a clean guitar tone

Did you remove the connection to A15 along with adding the 10K from J13 to J1? Did you turn up the Drive pot?

Is your clean signal back to a decent volume? Adjustable with the Volume pot? Can you notice a change with the Tone pot?
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic

Quote from: Govmnt_Lacky on May 09, 2020, 08:08:18 PM
Quote from: DJPsychic on May 09, 2020, 08:03:03 PM
I'm getting a clean guitar tone

Did you remove the connection to A15 along with adding the 10K from J13 to J1? Did you turn up the Drive pot?

Is your clean signal back to a decent volume? Adjustable with the Volume pot? Can you notice a change with the Tone pot?

Volume is better, but quieter than my bypass signal. Volume pot works

A15 disconnected, added 10k. Gain pot does not work.

Tone pot works.

Govmnt_Lacky

#10
Quote from: DJPsychic on May 09, 2020, 08:11:14 PM
Volume is better, but quieter than my bypass signal. Volume pot works

A15 disconnected, added 10k. Gain pot does not work.

Tone pot works.

Lift the connection out of G1 and put it into Ground. Try that.

EDIT: And change that 470K (R3) to a 10K
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic

Quote
Lift the connection out of G1 and put it into Ground. Try that.

EDIT: And change that 470K (R3) to a 10K

G1 to ground or D4 to ground?

Govmnt_Lacky

Quote from: DJPsychic on May 09, 2020, 08:23:00 PM
G1 to ground or D4 to ground?

Pull out the connection at G1 and put it into Ground instead.

Also, change the 470K resistor at the top (R3) to a 10K resistor
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic


Quote

Pull out the connection at G1 and put it into Ground instead.

Also, change the 470K resistor at the top (R3) to a 10K resistor

Sounds like a machine gun  :icon_eek:

Govmnt_Lacky

Quote from: DJPsychic on May 09, 2020, 08:27:43 PM
Sounds like a machine gun  :icon_eek:

Well, I guess put it back to G1.

You might have a bad half to your 4558 chip.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

DJPsychic

#15
Quote

Well, I guess put it back to G1.

You might have a bad half to your 4558 chip.

I appreciate you going through that with me, I'll have another go at it tomorrow, need a break lol. Thank you kind sir

edit: tried another chip, same result. I'll redo breadboard tomorrow

jacehzoid

Difficult to tell from that angle in the photo, but is your resistor left lead directly under the IC in the correct row?

stallik

Insanity: doing the same thing over and over again and expecting different results. Albert Einstein

niektb

#18
Also double-check if the gain pot value is correct :)

btw, you don't have 1k resistors? the resistor from g7 to g11 appears to be something else.
And what values are these bias resistors right top? are these 10k? (100k is brown-black-yellow)

DJPsychic

Quote from: jacehzoid on May 09, 2020, 10:40:32 PM
Difficult to tell from that angle in the photo, but is your resistor left lead directly under the IC in the correct row?

There's a 1k @ E15-F15