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WTB: Focus Potentiometer for Sencore SC3100

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chaneman
Guest

Tue Jan 25, 2011 5:34 pm   



Have a Sencore SC3100 with a broken focus potentiometer.
It is not a circuit board problem as the pot is in pieces and
needs to be replaced. Needless to say the scope is about
useless without this part functioning. Can anyone tell me
where to get this part or what the specifications are for it?
Numbers on the casing of the pot are 15A77 0050.
Multiple searches have turned up nothing. Thank you for
your time.

Alex
Guest

Tue Feb 18, 2014 8:30 am   



Alex wrote:
Quote:
chaneman wrote:
Have a Sencore SC3100 with a broken focus potentiometer.
It is not a circuit board problem as the pot is in pieces and
needs to be replaced. Needless to say the scope is about
useless without this part functioning. Can anyone tell me
where to get this part or what the specifications are for it?
Numbers on the casing of the pot are 15A77 0050.
Multiple searches have turned up nothing. Thank you for
your time.

I think it's a 15K Linear pot ..based on the numbers. Not sure though.
Usually the first number and a letter say how many K's it is and if it's
a Lin or Log pot.
Old markings standard suggests that "A" means linear.
The rest is like some manufacturers internal protocol markings or
something.

Maybe there are some potentiometer marking standards out there that deal
with those specific numbers? I'm just guessing here.

Try reading values from the other good potentiometers and see what they
read out on the multimeter and see if they have similar markings.
And compare if there are any matches between multimeter readings and
markings Smile


Also you could try guessing the value with the decade resistor box ..
going from high values gradually reducing to lower values until you
focus on the scope.

Alex
Guest

Tue Feb 18, 2014 8:30 am   



chaneman wrote:
Quote:
Have a Sencore SC3100 with a broken focus potentiometer.
It is not a circuit board problem as the pot is in pieces and
needs to be replaced. Needless to say the scope is about
useless without this part functioning. Can anyone tell me
where to get this part or what the specifications are for it?
Numbers on the casing of the pot are 15A77 0050.
Multiple searches have turned up nothing. Thank you for
your time.


I think it's a 15K Linear pot ..based on the numbers. Not sure though.
Usually the first number and a letter say how many K's it is and if it's
a Lin or Log pot.
Old markings standard suggests that "A" means linear.
The rest is like some manufacturers internal protocol markings or
something.

Maybe there are some potentiometer marking standards out there that deal
with those specific numbers? I'm just guessing here.

Try reading values from the other good potentiometers and see what they
read out on the multimeter and see if they have similar markings.
And compare if there are any matches between multimeter readings and
markings Smile

Michael A. Terrell
Guest

Tue Feb 18, 2014 2:50 pm   



Alex wrote:
Quote:

chaneman wrote:
Have a Sencore SC3100 with a broken focus potentiometer.
It is not a circuit board problem as the pot is in pieces and
needs to be replaced. Needless to say the scope is about
useless without this part functioning. Can anyone tell me
where to get this part or what the specifications are for it?
Numbers on the casing of the pot are 15A77 0050.
Multiple searches have turned up nothing. Thank you for
your time.

I think it's a 15K Linear pot ..based on the numbers. Not sure though.
Usually the first number and a letter say how many K's it is and if it's
a Lin or Log pot.
Old markings standard suggests that "A" means linear.
The rest is like some manufacturers internal protocol markings or
something.

Maybe there are some potentiometer marking standards out there that deal
with those specific numbers? I'm just guessing here.

Try reading values from the other good potentiometers and see what they
read out on the multimeter and see if they have similar markings.
And compare if there are any matches between multimeter readings and
markings Smile


You replied to a message that is over three years old.

--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

Alex
Guest

Tue Feb 18, 2014 3:40 pm   



Michael A. Terrell wrote:
Quote:

Alex wrote:

chaneman wrote:
Have a Sencore SC3100 with a broken focus potentiometer.
It is not a circuit board problem as the pot is in pieces and
needs to be replaced. Needless to say the scope is about
useless without this part functioning. Can anyone tell me
where to get this part or what the specifications are for it?
Numbers on the casing of the pot are 15A77 0050.
Multiple searches have turned up nothing. Thank you for
your time.

I think it's a 15K Linear pot ..based on the numbers. Not sure though.
Usually the first number and a letter say how many K's it is and if it's
a Lin or Log pot.
Old markings standard suggests that "A" means linear.
The rest is like some manufacturers internal protocol markings or
something.

Maybe there are some potentiometer marking standards out there that deal
with those specific numbers? I'm just guessing here.

Try reading values from the other good potentiometers and see what they
read out on the multimeter and see if they have similar markings.
And compare if there are any matches between multimeter readings and
markings :)


You replied to a message that is over three years old.

I'm aware of that.


Michael A. Terrell
Guest

Thu Feb 20, 2014 8:30 am   



Alex wrote:
Quote:

Michael A. Terrell wrote:

You replied to a message that is over three years old.

I'm aware of that.



Do you think the OP is still waiting for an answer?


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

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