Telrad not working

[wookie1965]

I have opened it up getting 1.72 volts at the switch not sure if this is right. When I check the resistor for continuity it beeps off and on and shows various readings from 0.062 to 0.217 can anyone help me please. 

[Louis D]

I've had issues with multiple Telrads over the years.  They all seem to revolve around the switch (a potentiometer with switch) failing.  I've had some that won't come on at all, some that won't light until at full output, some with limited brightness travel before full brightness.  I generally just buy another because I don't have the spare time to mess with repairs, but you could try swapping out the switched potentiometer to see if that fixes the problem.

[Ratlet]

2 minutes ago, Louis D said:

I've had issues with multiple Telrads over the years.  They all seem to revolve around the switch (a potentiometer with switch) failing.  I've had some that won't come on at all, some that won't light until at full output, some with limited brightness travel before full brightness.  I generally just buy another because I don't have the spare time to mess with repairs, but you could try swapping out the switched potentiometer to see if that fixes the problem.

When I first got mine I thought it was broken.  I'd accidently set the pulse time for the circle to incredibly slow so that the circle was almost never displayed.  That's what I get for not reading the manual.

[bomberbaz]

2 minutes ago, Ratlet said:

That's what I get for not reading the manual.

reading a what? 😉

[Louis D]

1 hour ago, Ratlet said:

When I first got mine I thought it was broken.  I'd accidently set the pulse time for the circle to incredibly slow so that the circle was almost never displayed.  That's what I get for not reading the manual.

When did Telrads start getting sold with built-in pulsers?  None of mine have one.  You generally have to install one of these kits yourself to get a pulsing function.  Are you referring to a Rigel QuikFinder instead?

Edited April 25, 2023 by Louis D

[wookie1965]

Right thanks everyone I've sorted it dodgy contact on the battery box. 

[Ratlet]

2 hours ago, Louis D said:

When did Telrads start getting sold with built-in pulsers?  None of mine have one.  You generally have to install one of these kits yourself to get a pulsing function.  Are you referring to a Rigel QuikFinder instead?

Yes.  Yes I am.  I'd claim I was having a senior moment but I don't have the milage 😂.

[Ags]

8 minutes ago, Ratlet said:

Yes.  Yes I am.  I'd claim I was having a senior moment but I don't have the milage 😂.

Don't worry - you are as old as you feel 😄

[Spile]

3 hours ago, Louis D said:

When did Telrads start getting sold with built-in pulsers?

I don’t believe any are, but you can modify them to pulse. Never seen the need personally.

[michael8554]

Glad you got it sorted.

As Louis D said, a common problem is the potentiometer failing.

Dew gets on the carbon track, plus the wiping action of  rotation, wears the track away.

Michael