Thanks to everyone who responded to my question, it has turned into quite a large and interesting discussion! I have had the bearings soaking in a naphtha type solvent for the last couple of days

Hi Ron and John, I was not aware that the signal from both channels were the same up to U1350. That means the attenuator has nothing to do with the gain being off. In that case then the 7A26 is acting

Definitely fix'er up, there's nothing like the feeling of restoring a beautiful bit of test gear like this. Gotta be careful though, it's hard to stop once you fixed one :).

Sounds like fun. I just bought an Agilent E3630A That does not show any voltage/current on the display. It has not arrived yet, but I’ll be trying to fix it. Good luck, larry

Hi, Fix it and tell us about it. How large is the ripple? Everyone seems to recommend changing the caps in the power supply. You say after warmup, then the problem starts. CAPS?? The manual is

Hi everyone: This is my first post since the group changed to IO. I been in need of a good Dual Voltage variable power supply for my bench, I been looking around on line for awhile when I came across

Hi, I acquired a 2445A a few years back and never switched it on until now. I am now starting to look at it for the first time and there are a couple of issues, but I have no scope fixing experience.

Ron, that is what I figure too. U1350 is the probable culprit as the signals match on channel 1 & 2 up to that point. The readout is OK so it is basically in the gain channel. As I say one

It really works well in the task removing label glue. Paper labels I just let it soak into the label, let it sit and pell off the label, remove the glue then your favourite IPA to remove the WD-40.

I have seen some lively discussions about WD-40 in switches, pots and bearings. I have never had any problem using it as a PART of the cleaning process. It will often cut loose crud that nothing else

Hi Richard, I tend to use Oilite as a generic term for sintered bronze. It seems to be a common usage among older mechanics and machinists... Oilite kind of rolls off the tongue better than sintered

Dennis I should have been more precise, I didn't mean to imply that the 7A26 had differential inputs but that the internal signal path was differential. If you look at the block diagram in section 7

Wow good news!  I hope one of those will end up here.  Keep me informed. Bob818 894-2887

Hi Ron, This is not what is causing the 1/2 gain in one of the two channels but not the other. The 7A26 is not differential. It has two separate input channels. In certain cases the 2nd channel can

EVERY Tek curve tracer, except for the limited plugin versions (7CT1N and 5CT1N) have two "sockets" to do A/B comparisons. This includes the 570 (vacuum tube curve tracer), 575, 576, 577, and 370. The

Look at the Oilite web site. They state that the oil is infused via vacuum. This is what I always understood about how Oilite bearings were made. There are sintered bearings that are meant for an

You're right it was, I saw this on a Science channel show. S

Sorry Chuck, My only experience with these type of bearings is with ones that were already oiled, sorry about that. One thing I like about this list is the plethora of new information. Steve

although I have no specific knowledge of the 7A26, in differential amplifiers if one side is dead then the gain is exactly 1/2 what it should be.

The WD stands for Water Displacing, by the way.  40 is presumably because it was the 40th substance the manufacturer tried.Jim FordSent from my Verizon, Samsung Galaxy smartphone