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Robert has an excellent point. Instruments and test equipment need to have their accuracy checked periodically. I only have one instrument which goes to the cal lab for an annual calibration. It is my

Bonjour WORGH, have used,and fixed 2465/7/B since 1990s. I am very wary of any older SN, or no suffex 2465 or A. Any vendor with "government" is also a flag. Repair can be PS, or HV, and control

Is it still connected to the 4051 during measurements? Try without any other connections and of course be aware of the DVM load effects. If the 4051 is leaky, it could cause grief. Also try getting a

Hello I am at a standstill with figuring out why the CRT of my 2465A is blurry and won't focus. I purchased this unit from Government Planet last summer with the idea that I would probably have to

Gianni, According to the schematic, cathode voltage is supposed to be -1600 V. At 1000:1 divider would give 1.60 V, which it does. You say the input is -1510 V. Have you verified the accuracy of the

<Giovanni.becattini@...> wrote: This is how I felt until I discovered that my 485 had a voltage dependent "precision" resistor in the circuit that derives 13V from the 50V rail.

I add a question: the cathode voltage is supposed to have some ripple or to be steady? When I measure the HV, I use the HV-probe with the VOM but I could understand that the voltage does have a

Hi Guys, I am trying to fix some problems on my 11302, but I am stuck on a problem that seems very simple, but which I cannot overcome: a simple voltage divider. I am probably doing something wrong,

Gianni Becattini <Giovanni.becattini@...> added the photo album Bewitched voltage divider (11302) ( /g/TekScopes/album?id=300803 ) : see my emailò

Hi all Thanks for your inputs... yes it's mostly for preservation reasons... how many people or institutions are left with a functional Tektronix 145? I initially picked it up for spares but it's so

I have my boards made at PCBWay. They produce extremely high quality boards at very reasonable prices. When gold fingers are involved using the traditional gold over nickel the fingers are

Luca, R1156 is too hot. Replace with a 5W. Look around the TP1100 for bad parts. The thermistor could be open. Dirty pins/sockets could be the problem. Check the ripple in the power supply. At the

To fix PAL standard televisions? Yes, people are into preserving antique televisions and

Excuse me, but why you would want a functional PAL signal generator?

Hi all Here /g/TekScopes/topic/107425848 H?kan kindly provided the service manual for this signal generator. I had time to have a look inside and found a shorted cap on the -15V

As Ryan said, This equipment has been purchased, any yes, some will certainly be at the local ham fairs.

I just got some of these https://www.thingiverse.com/thing:4565400 3D printed in nylon from China. They are white but fit well and were cheap (6 for $8 including shipping (for some reason I got a

Hi All, The items are mainly TM500 / 5000 series plug ins and 7000 series scopes and plug ins... Most of which I believe were purchased from the Tek Country store over the last 2-3 decades. She

Funny, When I google ko4bb and click on Manuals, I can get to any manual that is a file listed on that page. But if I click on a folder, then it goes to Home page. Frank DuVal

Well... many of us...on this forum... IMO... are hobbyists. Probably, I am not very smart... but AFAICT... time, connectors, and fiddling around with shipping, can be expensive... but, high quality