Brownface Potentiometers
Moderators: pompeiisneaks, Colossal
- martin manning
- Posts: 13356
- Joined: Sun Jul 06, 2008 12:43 am
- Location: 39°06' N 84°30' W
Re: Brownface Potentiometers
It’s the lead that has nearly equal resistance to the other two. You may be on to something! We should have guessed that when your previous measurements were so nearly a factor of two apart.
Re: Brownface Potentiometers
Blue and brown = 97.2 ohms
Brown and red = 89.4 ohms
Red and blue = 185.1 ohms
Looks like brown is the B+ to me
Brown and red = 89.4 ohms
Red and blue = 185.1 ohms
Looks like brown is the B+ to me
Re: Brownface Potentiometers
Bugger I hate adding to wires as I cut the red short as you do It looks bad to me and is so obvious. Thinking should I ask for a replacement transformer?
Re: Brownface Potentiometers
What's the manufacturer and model number for the OT? Do you have a data sheet for the OT? Where did you buy the OT?
TIP... Never cut the primary leads of an OT until you are absolutely sure they are connected properly. There's a 50/50 chance you will need to swap primary plate leads to correct improper NBF phase.
TIP... Never cut the primary leads of an OT until you are absolutely sure they are connected properly. There's a 50/50 chance you will need to swap primary plate leads to correct improper NBF phase.
Re: Brownface Potentiometers
To be fair I didn't cut the blue or brown just the red as I expected it to stay were it was.
Info about transformer was earlier in the thread and I am contact with them to see if we can come to some agreement.
Info about transformer was earlier in the thread and I am contact with them to see if we can come to some agreement.
- martin manning
- Posts: 13356
- Joined: Sun Jul 06, 2008 12:43 am
- Location: 39°06' N 84°30' W
Re: Brownface Potentiometers
So did you connect it up the right way around and see if that solves the problem?
Re: Brownface Potentiometers
Not yet I am working for the next couple of days so will leave it till I have some proper time
Re: Brownface Potentiometers
Had 10 minutes to spare so moved wires about a lo and behold we have a nice fender clean sound so brown was the B+. Will find out if I get the vibrato on both channels later let's hope not.
Wilk speak with transformer seller tomorrow.
Wilk speak with transformer seller tomorrow.