Bias Mod installed. Need a bit of help.

[mansfieldguitars]

Trev,

If you or anyone has some suggestions for me to add to the instructions then please share. Sometimes us techs assume that people know some of the basic things. My goal with these kits are to make them as easy and painless *** possible. I'd be more than happy to revise the instructions to clear up any concerns customers with little or no experience may have.

Thanks
John

 

[mansfieldguitars]

Trev,

If you or anyone has some suggestions for me to add to the instructions then please share. Sometimes us techs assume that people know some of the basic things. My goal with these kits are to make them as easy and painless *** possible. I'd be more than happy to revise the instructions to clear up any concerns customers with little or no experience may have.

Thanks
John

 

[mansfieldguitars]

edit

 

[Trev57]

John, I am not sure I got everything in my instructions as I think I was missing page 3 (I had duplicates of page 2 stapled together). So here are a couple of ideas based on your suggestions to me.

I got a before photo in my instructions. An after picture would have been useful (I saw the one on the Lonestar page, so maybe that was missing) and my resistor was different colours from your description.

Take a base reading using the probe before unsoldering the resistor for later comparison and to understand where your amp is from the factory.

How to check the bias probe using a continuity tester.

Warning about the cathode ground wire. - I looked at the amount of things I would have to disconnect to even see this, and realised I would have to go to a specialist if this was a problem. Given my recent success I have asssumed all is OK.

Basic information about the pot. 25 turns total etc. This helped me understand a bit about what I was dealing with.

I like Charles suggestion about cutting the resistor wires and give you something to solder to. I am sure anyone with experience would be able to solder straight to the board. I had never soldered to a board before, so it would have been prefereable for me to have had this option. I expected the resistor to come off the board easily when I touched it with the iron, but it was more stubborn than I expected. I damaged it slightly so I may as well have just cut it out and reduced the risk to other components.

 

[inkwachemis]

hey Trev-

After over a week with your amp now, any additional thoughts?