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For completeness sake, I'll add a link here. I just uploaded all the software I have. Details here: /g/TekScopes/topic/software_for_the/109555509 And a direct link to the

Art, I found an earlier discussion from Stan Griffiths (deceased) that might be useful for your panel meter replacement. I found it when I searched for the part number 149-0017-00. Clark ——- old

Yep, 1.5KE220CA is the exact part number you need. (The 'CA' at the end of the part number means bidirectional, if it were just 'A' then it would be uni-directional) Be aware though that the two TVS

If indeed an LC130 meter is available and is otherwise suitable, putting a shunt resistor across the 200uA sub trivially fixes that up.

It's is the same meter in appearance, but the 570 uses a 1mA movement. There are replacement meters available on the market with the same footprint and rating, but the prices are a bit much. Then

Hi, thank you for the support. I will place the order in the coming days. However, I have a question since English is not my native language. Is the 1.5KE220CA -

Ah ok, I understand you now. Those Tantalums you selected seem like a reasonable choice. Having a quick look at the spare boards I have here, it seems Tek just used the same values when they swapped

I believe a similar 200 ua meter was used in some of the 130 L/C meters, which are much more available than 570 curve tracer parts.? Check serial number range.? You would need to change the

Hi Jared, Thank you for your message and advice. Yes, I am referring to those caps. And I’ve decided to replace them with tantalum ones. I’ve looked on Digikey and found these: T491C336M016AT and

BTW, the reason I asked about that is if you swap them and the readout is centered horizontally, then the problem is likely in your vertical amplifier board. If it exhibits the same offset

I require a replacement meter for my Tek 570 curve tracer. Mine is a later version, SER # 5474. The part # is 149-017. Any help appreciated. Thanks, Art

Hi Steve, Wow, this is super convenient! If word of this gets out to university research labs with old GPIB instruments and young grad students, you're gonna get busy. The price is almost twice what

I am just now releasing version 2 of my KISS-488, which will do exactly what you ask. This small unit plugs directly into the IEEE-488 port of your instrument, and has Ethernet and USB jacks on the

When you say Tantalum, are you talking about the small metal can capacitors with the tiny black plastic base? They are standard SMD type aluminium electrolytic. They should all be replaced with

If you swap the cables coming from the readout to the vertical and horizontal boards, what does that show? Thanks, Barry

OP save time, avoid many more text notes PLEASE take clear pix the 7704A problem, go to this group Photos section, start new album, name like like "7704ARO" Upload the pix to FULLY AND CLEARLY

top is now at center, bottom is below the bottom of the screen but still there. when I use the beam finder button I can see that all is displaying well, and readout value changes when i change volts

By this, do you mean what should be at the top is now at the center and, possibly, what should be at the bottom is not there at all? Thanks, Barry - N4BUQ

Thank you. I'm new to groups.io so I'll look at getting some pictures posted of the unit. I'll give it a go reseating what I can on the readout board, hopefully it helps!

Both traces will display fine at the moment, just the readout issue