scott lk 48 balance pott help

[shelby1420]

Mine is so badly corroded that even after three pretty serious baths with Deoxit the damn thing is still givin me a hard time, can anyone tell me the value of this pott, just gonna swap the thing with a new one!!! Thanks all!!!:thmbsp:

 

[chicks]

Unsolder it, and measure across the two outer lugs.

 

[shelby1420]

Thanks for the quick response, was hoping to find out without having to do that, want to listen to it while I order the replacement......

 

[chicks]

I have one, and have the schematic around here somewhere.... Got it from the HH Scott site IIRC, it's the same as the 222C. Depending on the model you have, it should be here: http://hhscott.com/database/vhhs_00011.html

 

[Mike Stehr]

The schematic I have for LK48B, shows a 1 meg balance pot.

 

[shelby1420]

I have one, and have the schematic around here somewhere.... Got it from the HH Scott site IIRC, it's the same as the 222C. Depending on the model you have, it should be here: http://hhscott.com/database/vhhs_00011.html

If I am reading it correctly it says R39 BAL and R139 BAL 100k, does this make sense??

 

[cademan]

According to my schematic, its a 1M ohm, R211.

 

[FalconEddy]

Mine is so badly corroded that even after three pretty serious baths with Deoxit the damn thing is still givin me a hard time, can anyone tell me the value of this pott, just gonna swap the thing with a new one!!! Thanks all!!!:thmbsp:

Ok. . .You need to be more specific than just saying it's the 'balance pott'.

Is it the Left/Right CHANNEL balance pot coming out of the faceplate in the front?

-OR-

Is it one of the two DC Balance pots used for balancing out the current draw between a pair of output tubes??

If it's the CHANNEL balance pot, it's 1MEG.

If it's one of the DC Balance pots, it's 100K.

. . Falcon

 

[shelby1420]

Ok. . .You need to be more specific than just saying it's the 'balance pott'.

Is it the Left/Right CHANNEL balance pot coming out of the faceplate in the front?

-OR-

Is it one of the two DC Balance pots used for balancing out the current draw between a pair of output tubes??

If it's the CHANNEL balance pot, it's 1MEG.

If it's one of the DC Balance pots, it's 100K.

. . Falcon

Good point, it is indeed the balance from front face plate...... I will look for 1 meg. Thanks for the help guys!!! I noticed that the pics of the potentiometers for sale have the three tabs at the bottom but nothing at the top, mine has a tab at the top + the three tabs at the bottom of the pott that 2 black wires are connected to???

 

[Dadbar]

Forget about the extra tap on top. Scott probably took a pot out of the parts bin which had a fixed center tap. Sometimes these are used for bass or treble controls. You don't need it for your application....just 1meg control...make sure you specify a linear control and not a logarythmic one....1/4 inch shaft.

 

[shelby1420]

Forget about the extra tap on top. Scott probably took a pot out of the parts bin which had a fixed center tap. Sometimes these are used for bass or treble controls. You don't need it for your application....just 1meg control...make sure you specify a linear control and not a logarythmic one....1/4 inch shaft.

Ok thanks, which one of the three tabs would the two black wires from this center tab go to??

 

[shelby1420]

Help?

Ok thanks, which one of the three tabs would the two black wires from this center tab go to??

Anyone?? Should the two black wires from center tab top go to the middle tab on the bottom??