UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Tektronix 465B Scope

davidgem1406 · 26th Jun 2013, 5:45 pm

Hi Mike,

I have no means to measure the value or the ESR of the capacitor.

The manual I have coming on CD in pdf format if that is good then im quite happy with pdf as i can print off any parts i wish.

Hello DC

I will go through all the supplies again and check the ripple. There is more than just ripple there but it is all below 5mV.
I will try to identify the other frequencies involved.

Yes the second picture of the spot shows it distorted and that is the effect of adjusting the Focus or Astig controls.

Hello Bill,

I will check all the power rails for ripple, i have another scope i can use.
Yes I have looked at Sprague as replacement and the price is just out of control, cheaper to by Gold bullion.
I found 1 capacitor on our favourite auction site said to be low ESR and 85 deg. C

Hi Dickie,

Thanks for the offer I need the board layout covering the power supplies and the circuit diagram for the same. Im using the 465 at the moment as they are better than the 465B I have.
I have the whole thing coming now on CD in pdf format, just hope its as good as they are saying.

Thanks to all,
Ill be back
Dave.

26th Jun 2013, 5:45 pm	#17
davidgem1406 Heptode Join Date: Feb 2011 Location: Sheerness, Kent, UK. Posts: 936	Re: Tektronix 465B Scope - Some problems. Hi Mike, I have no means to measure the value or the ESR of the capacitor. The manual I have coming on CD in pdf format if that is good then im quite happy with pdf as i can print off any parts i wish. Hello DC I will go through all the supplies again and check the ripple. There is more than just ripple there but it is all below 5mV. I will try to identify the other frequencies involved. Yes the second picture of the spot shows it distorted and that is the effect of adjusting the Focus or Astig controls. Hello Bill, I will check all the power rails for ripple, i have another scope i can use. Yes I have looked at Sprague as replacement and the price is just out of control, cheaper to by Gold bullion. I found 1 capacitor on our favourite auction site said to be low ESR and 85 deg. C Hi Dickie, Thanks for the offer I need the board layout covering the power supplies and the circuit diagram for the same. Im using the 465 at the moment as they are better than the 465B I have. I have the whole thing coming now on CD in pdf format, just hope its as good as they are saying. Thanks to all, Ill be back Dave.